KR101527424B1 - On-Line Smart Conductivity Analyzer - Google Patents

Abstract

The present invention relates to a smart conductivity analyzer capable of displaying a measurement value related to conductivity of quality of water used in a power plant or various fields using one analyzer by converting measurement values for various measurement items related by a resistance measurement value. More specifically, the smart conductivity analyzer measures resistance of water quality using one conductivity sensor connected with a rear surface of a case, displays the measurement value of conductivity, hardness, resistance, specific resistance, total dissolved solids, salinity, and sodium (natrium), as a calculated value calculated and converted from the measurement value and unit according to functional relation, simultaneously and selectively displays the measurement value having relations with conductivity measurement value of quality of water used in a power plant or various fields by differently representing normal state and abnormal state when a measurement value is displayed. Therefore, the smart conductivity analyzer does not need a separate conversion process by selectively or simultaneously displaying the converted measurement value of conductivity, hardness, resistance, specific resistance, total dissolved solids, salinity, and sodium (natrium) of quality of water used in a power plant or various fields using one conductivity sensor.

Description

On-Line Smart Conductivity Analyzer

The present invention relates to an on-site smart conductivity analyzer, and more particularly, to a smart conductivity analyzer for on-site use, which can convert measurement values of various measurement items related to resistance measurement values and display measurement values related to conductivity used in power plants and various water quality fields using one analyzer Smart Conductivity Analyzer.

In general, electrical conductivity refers to the degree of electrical conductivity and is sometimes referred to as Conductivity, Specific Conductivity, or Conductance.

This electrical conductivity is a unit that indicates the ability of a single substance to flow a current, whereas a non-electrical conductivity is a unit of electrical conductivity of an object having a unit length or unit area under a specific temperature. The nonconductivity is synonymous with volumetric conductivity and is the inverse of the volume resistivity (resistivity).

The unit of electric conductivity is mho or Siemens, and 1 mho = 1 Siemen. Since the unit of electrical resistivity is Ohm (Ω), water having an electrical conductivity of 1 μs can be said to have an electrical resistivity of 1,000,000Ω or 1MΩ.

The measurement of the electric conductivity is carried out by flowing a current using two special electrode plates. The electric conductivity is closely related to the amount of dissolved total solids (TDS, Total Dissolved Solids) contained in the water. The more charged ions in water, the greater the electrical conductivity of water. That is, as the ionic concentration in the solution increases, the electrical conductivity of the solution increases, so the electrical conductivity is an indicator of the concentration of ions present in the water.

The principle of the measurement of the electric conductivity is that if a constant AC voltage is applied to two electrodes contained in a solution, the applied voltage causes the current to flow, and the magnitude of the current flowing depends on the conductivity of the solution. Can be expressed by the following expression.

R (?) = (? · L) / A

(Ρ: resistance (Ω · cm), ℓ: distance between two electrodes (cm), and A: sectional area (cm 2)

The electrical conductivity L can be expressed by the following equation.

L = 1 / R = (A / l) K

(Where K (= 1 / ρ) is the specific conductivity (mho.cm), and the standard of the cell is constant when using the same measuring system.

Therefore, the measurement result is expressed by the electrical conductivity value (mho / cm) of the sample by multiplying the electrical conductivity value (mho) of the measured sample by the cell constant (cm ^-1 ). At present, however, the international system of units 1mS / m (Millisimens / meter) also shows the measurement result in units of μs / cm (microsimens / centimeter), where 1S = 1mS = 1000μS. Also, the electrical conductivity is influenced by the difference in temperature (about 2% / ℃), so the value is converted into the value at 25 ℃ in order to unify the measurement results.

The conductivity analyzer, which measures the electric conductivity, uses an alternating-current Wheatstone bridge circuit or an operational amplifier circuit.

However, the conventional water quality meter has a problem that it has a simple function of displaying only the measurement value measuring the water quality by using different measurement principles.

The electrical conductivity measuring method and the electrical conductivity measuring system using the same according to the related art include an electrical conductivity measuring container having electrodes and having a specific cell constant; A voltage applying unit configured to apply a constant DC voltage to the electrode in a stepwise manner at predetermined time intervals; A current measuring unit measuring a peak current measured for each of the voltages; And a control unit for obtaining a resistance value of the solution contained in the electric conductivity measurement container from a linear relationship of the voltage with respect to the peak current and then determining the electric conductivity of the solution using the container constant and the resistance value of the solution .

The conventional electric conductivity measurement method and the electric conductivity measurement system using the same show only a conductivity value through a resistance value and it is inconvenient to perform a separate calculation process in order to know other characteristics of the water quality related to the resistance value and the conductivity. There was a problem.

In addition, current electrical conductivity meter does not have a system to selectively or simultaneously measure measured values such as conductivity, hardness, resistance, resistivity, total solids, salinity, sodium (sodium) And there is a problem that the system for measuring some measurement value items is not manufactured, so that there are many usability limitations in the case of the consumer and the purchase and maintenance cost is large even if the system is present.

As a result, it is easy to carry and install because of its small size, so it can be used as a field for measuring the characteristics of power plants and various water quality. By measuring the resistance using one electric conductivity sensor and conductivity analyzer, It is possible to identify the water quality of the electrode by using one conductivity meter without the need for a separate system, and to display the electrode in case of abnormality of the measurement process or in case of abnormality of the electrode. There is a desperate need for an improved conductivity analyzer that displays calibration information.

1. Registration No. 10-1412594 (Electric Conductivity Measurement Method and Electric Conductivity Measurement System Using It)

Accordingly, the present invention has been made in view of the above problems of the prior art, and it is an object of the present invention to provide a method and apparatus for measuring conductivity, hardness, resistance, resistivity, total solids, salinity, sodium (sodium) It is an object of the present invention to provide an on-site smart conductivity analyzer capable of selectively and simultaneously displaying measured values.

Another object of the present invention is to display the display state in the normal operation state and the display state in the abnormal operation state through the screen, the lamp, and the sound in all the processes related to the measurement so that the user can easily grasp it.

In addition, another object of the present invention is to compensate for various settings related to electrodes and measurement by an automatic method or a manual method.

Another object of the present invention is to make it easy for domestic or foreign people to use the language and the unit, and to enable the disabled person to use voice support or braille.

Another object of the present invention is to enable real-time communication with a control center for on-site control and control, in which various modes can be performed through a combination operation of limited buttons.

In order to attain the above object, the present invention provides a conductivity analyzer for measuring electrical conductivity of various kinds of water, comprising: a plurality of output channels for outputting measured values to one side of an input channel connecting a conductivity sensor to a rear side of a case; , The conductivity of the water is measured by a conductivity sensor connected to the input channel, and then the measured values and units of the conductivity, hardness, resistance, resistivity, total solids, salinity, and sodium (sodium) A display unit for displaying a steady state and an unsteady state differently from each other by inverted / non-inverted parts is formed at the front of the case, Normal state, abnormal state, upper / lower limit value, electrode connection status, error indication of electrode connection that does not correspond to measurement, A plurality of relay operations for setting a calibration value, setting an upper limit value and a lower limit value of a measurement range, setting a measurement value in the periphery of the lamp unit, correcting the conductivity sensor and operating the braille, The smart conductivity analyzer for on-site use is characterized in that measurement values of water quality used in various fields are displayed.

As described above, the present invention can selectively and simultaneously display measured values of conductivity, hardness, resistance, resistivity, total solids, salinity, and sodium (sodium) of a water quality used in a power plant or various fields by using one conductivity sensor There is no need for a separate conversion operation.

In addition, it is possible to confirm various measurement items by using a single conductivity analyzer, and thus, it is possible to integrally use without the need of an individual analyzer for confirmation of each item.

In all the processes related to the measurement, the display state in the normal operation state and the display state in the abnormal operation state are displayed through the screen, the lamp, and the sound, so that the user can easily grasp it.

In addition, it is possible to compensate various settings related to the electrode and measurement by an automatic method or a manual method, thereby increasing convenience.

In addition, it is displayed in various languages or units, so that it can be easily used by domestic or foreign people, and voice support or braille is formed, so that it can be used by persons with disabilities.

In addition, it is possible to perform various modes through a combination of limited buttons, and real-time communication with the control center for the on-site and control of the analyzer is possible, so that it is possible to respond accurately to the situation in the field.

1 is a side view of an electrode-type electric conduction sensor, Fig. 2 (b) is a side view of an electric conduction sensor of a non-electrode type,
FIG. 2 is a perspective view illustrating an on-site smart conductivity analyzer according to the present invention,
FIG. 3A is a front view of a Smart Conductivity Analyzer according to the present invention,
FIG. 3B is an exploded perspective view of the analyzer to which the display unit is applied as SND, in which a temperature unit sticker is attached to the LED lamp,
FIG. 3C and FIG. 3D are exploded perspective views of a case and a pad as an example of an analyzer in which the display unit is applied as SND;
FIG. 4A is a front view of a Smart Conductivity Analyzer according to the present invention, in which a display unit is applied by an LCD, an LED, an OLED,
FIG. 4B is an example of operating a dial to select a mode window,
FIG. 4C is an exemplary diagram showing various measurement calculation values on the display unit by calculating and converting measured values and units by measuring conductivity,
FIG. 5 is a front view showing a state in which the display portion of the smart conductivity analyzer for on-
FIG. 6 is a front view of a Smart Conductivity Analyzer according to the present invention, in which a display unit is applied in a touch panel manner and used in a panel form,
FIG. 7 is a rear view showing a terminal block of the smart conductivity analyzer according to the present invention,
8 is a use example in which the display switching unit is provided on the display unit of the smart conductivity analyzer for on-site use according to the present invention,
FIG. 9 is a schematic block diagram of a smart conductivity analyzer for on-site use according to the present invention,
10 is a graph showing a state in which the manipulation error rate is lost by comparing PID control with PI control,
Figs. 11 and 12 are views showing an installation example in which the smart conductivity analyzer for on-site use according to the present invention is installed on a panel or a wall,
13 is an example in which a conductivity analyzer is installed in a vertical pipe, FIG. 13 is an example in which a conductivity analyzer is installed in a horizontal pipe,
14 is a diagram showing a correlation table of units relating to hardness measurement,
Fig. 15 shows a correlation table showing the calculated values of various aqueous solutions by measurement of conductivity,
16 is a use state diagram of an on-site smart conductivity analyzer to which a conductivity sensor is connected.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 to 13, the smart conductivity analyzer for on-site use according to the present invention shows measured values of conductivity of various kinds of water quality, and it includes one conductivity sensor 20 connected to the rear surface of the case 10 The measured values of conductivity, hardness, resistivity, resistivity, total solids, salinity, and sodium (sodium) were calculated by converting the measured values and units according to the function relation, An output channel 41 for outputting a measurement signal of an electrode and an input channel 30 connected to the case 20 are formed on the front surface of the case 10 and a measurement value and various related information are displayed in front of the case 10, The analyzer 100 is constituted by a display unit 50 for displaying an operating state differently, a lamp unit 60 for displaying an operation related state in a light emitting manner, and an operation unit 70 for measuring and various operations, setting and compensation.

The case 10 can be formed in various sizes and shapes and the front cover 10d can be easily detached and attached to the body 10c having a plurality of heat dissipating holes 10b, So that it is easy to manage the components installed in the inside of the apparatus.

An input channel 30 for connecting the conductivity sensor 20 and an output channel 40 for outputting a measured value are formed on the rear surface of the case 10, respectively.

In this case, the conductivity sensor 20 is formed of one of a contact type and a non-contact type, and the contact type is formed of one of two electrodes, three electrodes, and four electrodes by an electrode type, and the non- can do.

Here, the electrode of the conductivity sensor 20 is composed of an anode electrode and a cathode electrode. In case of two electrodes, the electrode is composed of an anode electrode and first and second electrodes 22 and 23 which are cathodes (Cathode) A pair of first electrodes 22 and one second electrode 23 in the case of three electrodes and a pair of first electrodes 22 and second electrodes 23 in the case of four electrodes .

In addition, when the conductivity sensor 20 is of the electrode type, the cell constant C of the sensor connected to the input channel 30 is manually set through the operation unit 70. After the cell constant is set, 20 may be configured to manually correct the factor K value of the conductivity sensor 20, which is an error rate deviating from the theoretical cell constant value at the time of fabrication, through the operation unit 70.

That is, even if the cell 20 is fabricated so as to have a cell constant of '1' at the time of fabrication, the conductivity sensor 20 does not exactly have a cell constant of '1' ), It is possible to automatically correct the factor K value by the processor 80 or manually input the factor K by operating the operation unit 70 by the user.

The conductivity sensor 20 is formed by forming or not forming a plurality of temperature terminals T, a shielded terminal S and an earth terminal E connected to the temperature sensor 25, When the temperature sensor 25 is formed, the temperature of the water quality for measurement at the measurement site is sensed in real time to compensate for the measurement. In the absence of the temperature sensor, the temperature sensor 25 is configured to compensate by using measured value data relative to the predetermined temperature.

For example, when the conductivity sensor 20 is of the electrode type, the structure in which the first and second electrodes 22 and 23 are formed on the sensor body 21 will be described as an example. When the conductivity sensor 20 is of the non-electrode type, the first coil 24 and the second coil 24 are disposed inside the sensor body 21, which is not shown in the drawing, A structure in which the coils 26 are wound in a cylindrical shape and arranged side by side will be described as an example.

Using the conductivity sensor 20, a solution of sodium chloride (NaCl), sodium hydroxide (NaOH), ammonium hydroxide (NH ₄ OH), ammonia (NH ₃ ) (H ₂ SO ₄ ) solution, HNO ₃ solution, HF solution and SO ₂ solution can be measured as the weight% value, ppm, mg / L Value is calculated.

The calculation and conversion unit 81 calculates the conductivity and weight% value, ppm, and mg / L of the other solutions not measured using the weight% value, ppm, and mg / L calculated values, So that it can be displayed.

The input channel 30 forms a first input channel 31 of a four-electrode type so that the conductivity sensor 20 is connected to each electrode according to the number of electrodes when the conductivity sensor 20 is of the electrode type, And a second input channel (32) for connection in the case of an electrode type.

Electrode type and electrodeless type can be manually set by using the automatic recognition setting or operation unit 70 according to the conductivity sensor 20 connected to the input channel 30, 30).

The first input channel 31 of the input channel 30 is connected to one or more first electrode channels 30a, one or more second electrode channels 30b, a temperature terminal channel 30c, 30d, and an earth terminal channel 30e, respectively.

The second input channel 32 of the input channel 30 includes a pair of first coil electrode channels 30f, a pair of second coil electrode channels 30g, a temperature terminal channel 30c, A channel 30h, and a ground terminal channel 30e, respectively.

In the present invention, the anode electrode channel 30a and the cathode electrode channel 30b are preferably formed in pairs so as not to be constrained by the conductivity sensor 20 formed of two to four electrodes .

The temperature terminal channel 31c is constituted by a four-wire system comprising a pair of first temperature channels T1 and a pair of second temperature channels T2. The temperature terminal channel 31c of the conductivity sensor 20 T) may be formed of one of a 2-wire type, a 3-wire type and a 4-wire type. Therefore, in the analyzer 100 of the present invention, the temperature terminal channel 31c is configured as a 4-wire type, .

The output channel 40 is connected to an insulation signal output terminal 41 for converting the measurement signal of the conductivity sensor 20 by the operation and conversion unit 81 and outputting the measurement signal at 4 to 20 mA or 1 to 5 V, A plurality of insulating temperature output terminals 42 for outputting the measured temperature and temperature are selectively and simultaneously outputted as an output signal so as to accurately grasp the variation of the temperature during the measurement.

A first power source terminal 11 of AC 100V or AC 220V is formed behind the case 10 and a second power source terminal 12 So that it can be used as a DC power source environment.

The auxiliary power supply unit 18 is formed in the case 10 so as to maintain the measurement state by continuously supplying power when the power is turned off. The first and second power terminals 11 and 12 are maintained in a state in which the power is separately stored in the form of a rechargeable battery when power is supplied to the analyzer 100 through the first and second power terminals 11 and 12, If the power supplied through the power supply 12 is cut off due to a power failure or a short circuit of the power supply line, the power supply can be continuously supplied to the auxiliary power supply unit 18 through the auxiliary power supply unit 18 to continue the measurement process. And provides a time margin that can be prepared.

The conductivity, hardness, resistance, resistivity, and total solids measurement values of the conductivity sensor 20 connected to the input channel 30 can be converted into various display units, a cell constant display, a temperature display, a cleaning display, And a display unit 50 is displayed on the front side in which the steady state and the abnormal state are displayed differently from each other.

The display unit 50 may be one of an LCD method, an LED method, an OLED method, a touch panel method, and an SND (seven-segment display) method.

For example, the LCD method can be selectively activated depending on conditions of use and manufacturing conditions, such as LCM, TN, HTN, STN, FSTN and TFT, which can be activated during operation by incorporating a backlight function.

That is, in the LCD system, when the operation unit 70 is operated, the backlight function is activated and the light is emitted so that the screen can be seen clearly.

The LCD method, the LED method, the OLED method, and the touch panel method include a measurement value display window 51 that numerically or graphically displays measurement values, and a measurement value display window 51 in which the temperature is measured in degrees Celsius or Fahrenheit, An electrode display window 53 showing the type of the connected electrode and the cell constant, an error warning window 54 when the electrodes are not matched with the measurement, a calibration display window 55 for displaying the calibration contents, An output display window 56 for transferring the measured value to another device, and a cleaning display window 57 for displaying the cleaning contents may be formed in such a manner that they are divided or switched from one display screen to another.

In this case, the method of graphically displaying the measured values in the display unit 50 may include displaying the real-time measurement values in the horizontal direction or the vertical direction through the graphic window 58, A separate printer capable of printing can be connected and output.

That is, the LCD method, the LED method, the OLED method, and the touch panel method are configured such that the whole screen is emitted simultaneously with the application of power.

In addition, the SND (7-segment display) system includes a measurement display window 51 for displaying a measurement value and a temperature display window 52 for displaying the temperature in degrees Celsius or degrees Fahrenheit, .

The display unit 50 has a lamp hole 10f formed in a front cover 10d of a case 10 to which an SND (7-segment display) method is applied, The first and second LED lamps 52b and 52c having the printed sticker 52a attached thereto are installed in the lamp hole 10f so that the first and second LED lamps 52b and 52c emit light (° C) or Fahrenheit (° F) may be displayed.

(° C) and Fahrenheit (° F) are displayed on the pad 10g attached to the front of the front cover 10d of the case 10, The first and second LED lamps 52b and 52c are installed in the lamp hole 10f of the front cover 10d so that only when the first and second LED lamps 52b and 52c emit light, (° C) or Fahrenheit (° F) display is projected.

In this case, the first and second LED lamps 52b and 52c may be formed to emit light of the same color or emit light of different colors, and the degrees Celsius (° C) and Fahrenheit (F) The temperature of the first LED lamp 52b is not visible when the first and second LED lamps 52b and 52c are not illuminated and is displayed only when the light is emitted. For example, when the first LED lamp 52b emits light, And when the lamp 52c emits light, it is preferable that the display is configured to display the light of Fahrenheit (F).

Here, the unit of degrees Celsius (° C) or Fahrenheit (° C) through the operation of the first and second LED lamps 52b and 52c may be displayed by the analyzer 100 having the SND (7-segment display) It would be desirable to apply

That is, the SND (7-segment display) method is configured to emit light by a light emitting lamp not shown in the drawing by power supply.

For example, the display unit 50 displays a display state of a normal operation state and a display state of an abnormal operation state in relation to measurement, a lower limit of the upper limit of the measurement range, electrode related operation, (LED), OLED, and touch panel are controlled by inverting / non-reversing (84), the color of the whole screen is changed from white to red, or white and red The SND (7-segment display) method has a light emitting LED which emits different colors to each other, so that it can be operated in a different color from a normal state or an abnormal state Can be configured to be expressed.

At this time, if the control signal that determines various setting information and error through the processor 80 is transmitted to the inversion / non-return unit 84, the color of the display unit 50 is maintained in the non-inverted state in the normal state, State to the " state ".

In this case, the lamp unit 60 is provided with a visual indication of a measurement related condition or an abnormal condition on one side of the case 10, and is informed by sound or voice support through the buzzer 13, And the like.

In addition, a camera 14, a microphone 15, and an earphone jack 16 are formed on one side of the case 10 to configure a real-time video communication with a field and a control center, It is possible to receive the situation between the field and the control station in real time through the video and audio using the camera 14 and the microphone 15 and the voice transmission is clearly made using the earphone jack 16 .

When the conductivity sensor 20 is connected to the input channel 30, the display unit 50 outputs data of the cell constant of the conductivity sensor 20 and the cell constant of the sensor previously input to the processor 80, It is also possible to compose the connection of the conductivity sensor 20 by an automatic method or a manual operation through the operation unit 70. [

The cell constant C of the conductivity sensor 20 and the factor K value of the conductivity sensor 20 can be automatically corrected through the cell constant determination unit 85.

In addition, the analog signal value measured by the conductivity sensor 20 through the display unit 50 is converted into an analog signal value by the operational conversion unit 81 and the unit conversion unit 81a of the processor 80, It is displayed in one unit of S / cm, mS / cm, ㎲ / cm, in EC unit in EC measurement mode, in CF unit in CF measurement mode and in US unit type in total solid (TDS) (EC × 500), in case of European type (EC × 640), and in case of arc type (EC × 700).

In hardness measurement mode, it is displayed in one of gpg, gpm, ppm, ° e, ° Clark, ° fH. In resistance measurement mode, it is displayed in one of Ω, ㏀ and ㏁ units. .

In addition, it can be displayed in one of Ω / cm, ㏀ / cm, and ㏁ / cm in the resistivity measurement mode, and can be easily confirmed without needing conversion in the characteristics or necessary units of the user.

In this case, when calculating the total solids (TDS) measurement mode for each country, the calculation method is different from each other. For example, when using the US-style analyzer, In ppm units so as to prevent them from being generated.

At this time, the format of the output signal may be an automatic or manual output format selected from various insulated voltage and current signals, HART communication, RS232C (RS485, Modbus, TCP / IP) A HART output terminal 43, an RS232C output terminal 44, and an RS485 output terminal 45 are arranged behind the case 10 so as to be transmitted to another analyzer, a meter, and a recording system.

The display unit 50 may be integrally formed with the case 10 and connected to the processor 80. The display unit 50 may be installed in a separate case 10a separated from the case 10, Can be configured.

The communication unit 82 of the processor 80 is connected to the Internet and an external device in a wired transmission / reception manner to transmit measurement data and receive data,

The processor 80 may be formed of a nonvolatile or volatile memory and may be connected to the Internet and an external device through a communication port 82a and a communication port 82a formed in the case 10, It is preferable to apply the present invention to a form in which the display unit 50 is integrally formed.

Here, the non-volatile memory and the volatile memory are stored in the form of a circuit program in the processor 80, and the data measured in real time in the non-volatile memory is stored immediately, and is measured in the operation stop state due to the power OFF of the analyzer 100 And the volatile memory does not store the measured data in the suspended state of the analyzer 100.

In this case, when the volatile memory is formed in the processor 80, the auxiliary power supply 18 may be additionally provided in the analyzer 100 to provide a time margin to store the measurement data even when the power is not suddenly supplied. can do.

The processor 80 displays the real-time measurement value on the display unit 50 using the wireless communication unit 82 using Bluetooth or Wi-Fi, or transmits measurement data to an external device of a separate smart phone or personal portable terminal It is preferable to apply the present invention to the form in which the display unit 50 is separately formed by adopting the auxiliary case 10a by downloading and managing the data of the external device.

In addition, a removable storage slot 17 for connecting a USB device and an SD card device is formed in the case 10 or the case 10a of the display unit 50, and data can be downloaded using various devices as needed It is.

The removable storage slot 17 and the earphone jack 16 are configured to be exposed when the openable cover 10e formed in the front cover 10d of the case 10 is opened.

In addition, in the display unit 50, a hunting phenomenon (a phenomenon in which the measurement instruction value is not constantly increased or decreased) occurs in the measurement value or an abnormality of the measurement tilt in the measurement, or when the measurement is not performed, And a signal for activating a separate cleaning device is output through the cleaning output terminal 46 under the control of the processor 80.

Herein, the signal for driving the cleaning device is connected to the analyzer 100 to receive a signal for opening and closing the solenoid valve of the cleaning device.

At this time, when the temperature sensor 25 is not formed in the conductivity sensor 20, one of the thermocouple, the RTD and the thermistor is connected to the temperature terminal channel 30c of the input channel 30, can do.

The thermocouple, the RTD and the thermistor are temperature sensors capable of measuring a temperature when the temperature sensor 25 is not formed on the conductivity sensor 20, and are connected to the temperature terminal channel 30c of the input channel 30 Connect.

In addition, it is possible to manually input the temperature measurement data corrected according to the equation into the temperature (° C) or Fahrenheit manually (manual) through the operation unit 70.

The display unit 50 displays a measurement value or a measurement related message in various multilingual languages such as Korean, English, Chinese, and Japanese through a language conversion unit 83 connected to the processor 80.

The display unit 50 can adjust the color, brightness, and ON / OFF manually by operating the operation unit 70 or can detect the illuminance by the illuminance sensor 75 and adjust brightness, ON / OFF can be automatically adjusted.

The display switching unit 59 may be attached to the front surface of the display unit 50 so that the contents of the screen can be confirmed at the upper or lower position without confirming the display unit 50, The display unit 59 is a function of a prism positioned on the front surface of the display unit 50 or a refraction member 59b capable of redirecting light using the refraction of light in a periscope- The display screen of the display unit 50 can be grasped through the display switching unit 57 even when the display unit 50 is installed out of the line of sight range that can not project from the front.

When the conductivity sensor 20 is connected to the input channel 30 and the calibrating mode is selected by the operation unit 70, a value of a cell constant previously input to the processor 80 is determined So that the calibration solution measurement value of the conductivity sensor 20 is displayed on the display unit 50.

It is also possible to divide each calibration measurement value into a plurality of calibration display windows 55 at the time of multi-point calibration using a plurality of calibration solutions having different measurement ranges per one of the conductivity sensors 20, and to display the calibration measurement values on the display unit 50 .

In this case, when the measured value of the calibration solution is different according to the cell constant value of the sensor recognized by the processor 80 during the calibration of the conductivity sensor 20, the measurement range value of the calibration solution is manually inputted .

That is, since the calibration solution has a reference method that is different from the manufacturing method for each manufacturer, if a theoretical value is input to the processor 80 and an extremely minute error occurs even if the calibration solution is used, (100), but when the error rate is large, the calibration value is manually inputted using the operation unit (70) so that the slope calibration is performed.

On the other hand, a lamp unit 60 is formed around the display unit 50 to indicate a steady state, an abnormal state, an upper / lower limit value, a connection state of the ion electrode 20, do.

At this time, the lamp unit 60 is formed so as to emit light of five different colors in the analyzer 100, and various states are illuminated / blinked, blinking in a specific pattern, The first lamp 61 is turned off during an abnormal operation of the measurement and measurement process of the second lamp 62, and the other lamp 61 is turned off, And the third ramp 63 indicates a notification when the upper limit value HA is reached and the fourth ramp 64 indicates a notification when the lower limit value LA is reached and the fifth ramp 65 indicates It may be configured to indicate the connection state or abnormality of the conductivity sensor 20 and can be configured to indicate abnormality together with the display unit 50 adopting the SND (7-segment display) method.

The calibration-related operation unit 70 of the conductivity sensor 20 is related to a plurality of relay operations for unit setting of measurement values, setting of an upper limit value and a lower limit value of a measurement range, calibration setting, .

Here, the operation unit 70 may include a selection mode of the measurement and conductivity sensor 20, a calibration mode, a unit selection mode, a temperature compensation mode, an upper limit / lower limit value setting mode and a notification function setting mode based on a set value, (72), (73), and (74) so as to perform a mode, an enter mode, a lock / release mode, Or when two or three of the first to fourth buttons 71, 72, 73 and 74 are simultaneously operated in combination, another mode is performed in the running mode.

The first to fourth buttons 71, 72, 73 and 74 may constitute a braille character 70a for the visually impaired, and when the printer capable of outputting braille can be connected to the output terminal 41, The data can be output in the form of a braille print so that even a visually impaired person can use the analyzer 100 without any problem.

The Braille characters 70a may be displayed on a separate operation unit such as a keyboard in an LCD method, an LED method, an OLED method and a touch panel method, which are difficult to display on the separate operation unit 70, Only the display showing the four buttons 71, 72, 73 and 74 is displayed and the combination operation function of the first to fourth buttons 71, 72, 73 and 74 is the same as that of the analyzer 100 The analyzer 100 can be easily used even if the user is visually impaired by providing the manual in the form of braille in a separate manual provided by the manufacturer or providing the manual in a compact disc (CD) supported by voice.

In the analyzer 100 of the present invention, the button of the operation unit 70 is constructed by the first to fourth buttons 71, 72, 73 and 74, (100) is configured to perform various functions by a combination operation while keeping the volume compact and smart.

In addition, a dial control unit that operates as a dial 76 is formed on one side of the case 10 having the first to fourth buttons 71, 72, 73 and 74, The dial 76 can perform the functions of the first to third buttons 71, 72 and 73 and the fourth button 72 to perform the functions of the first to third buttons 71, Button 74 as shown in FIG.

At this time, if the dial 76 is rotated in the left / right direction, the displayed various mode zones of the display unit 50 are sequentially selected in the upward / downward direction or the left / right direction while the dial 76 is pressed, Mode is selected.

The analyzer 100 includes a panel mounting type in which a panel 200 is inserted and installed for installation on a measurement site, a wall mounting type installed on a wall 300, and a pipe 400 installed vertically or horizontally A pipe-mounted type, or a panel-mounted type in which a panel 500 of the apparatus is installed.

That is, the panel mount type is a method of inserting the field panel 200 into a space in which the rear of the case 10 can be inserted and fixing the panel 200 using a separate bracket B from the rear side. B is fixed to the wall surface 300 and the analyzer 100 is fixed to the bracket B. The pipe 400 is installed horizontally or vertically in accordance with the site characteristics of the pipe installation type, The lamp unit 60 and the operation unit 70 may be formed in a touch manner to place the pipe 400 between the panel 100 and the bracket B, 500), and an operation unit such as a keyboard having a braille character is installed separately, and the configuration is selectively applicable according to the field and use conditions.

The processor 80 constitutes a PID controller 87 for calculating a control value by using an error between an output value of a target to be measured and a set value.

The PID control unit 87 is programmatically configured to reach a target value by adding differential control (D control) to the proportional integral control (PI control).

As an example of the proportional integral control (PI control), when the diminished error value falls below the resolution of the manipulated variable, the current value is controlled to be constantly maintained with a very small error to the target value. There is a problem that a certain time is required to reach the target value in a manner of integrating the residual deviation and reading the error with a certain magnitude error and then increasing the manipulated variable, so that the PID controller 87 is used Respectively.

That is, the analyzer 100 measures the measured value of conductivity, hardness, resistance, specific resistance, total solids, salinity, and sodium (sodium) with the conductivity sensor 20 in the water quality used in a power plant or various fields, The analyzer 100 can be used to display various measurement values without any additional conversion through the conversion operation of the unit conversion unit 81a interlocked with the unit 81. [

The operation and effect of the present invention constructed as described above will be described below.

As shown in FIGS. 1 to 13, one conductivity sensor 20 is used to first measure one of the conductivity, hardness, resistance, resistivity, total solids, salinity, and sodium (sodium) The analyzer 100 is converted into a field characteristic by a panel installation type, a wall type type, a pipe type type, or a panel type type through the conversion operation of the operation conversion unit 81 according to the functional relationship according to the control of the controller 80 It is installed at the measurement site.

When the AC power source is used, the AC power source 110 is connected to the first power source terminal 11 of AC 110V or AC 220V by selecting the power supply mode of the case 10 of the analyzer 100. When the DC power source is used, A power supply line is connected to the power supply unit 12 to supply power to the auxiliary power supply unit 18 while the auxiliary power supply unit 18 is separately charged with power.

Next, the conductivity sensor 20 selects one of the electrode type and the non-electrode type depending on the characteristics of the water quality to be measured, conditions, conditions, and the like. Is selected and used for measurement. In the present invention, a two-electrode method is employed.

When the temperature sensor 25, the temperature sensor 25, the shield terminal S and the earth terminal E are formed on the conductivity sensor 20, the temperature sensor 25 is not used separately, Can be used.

The conductivity sensor 20 may include a first electrode terminal 22a connected to the first electrode 22, a second electrode terminal 23a connected to the second electrode 23, a temperature sensor 25, The first electrode terminal 22a is connected to the first input channel 31 when the conductivity sensor 20 is a contact type electrode, The cathode terminal 30a and the second electrode terminal 23a are electrically connected to the cathode terminal 30b of the cathode terminal 30a and the temperature terminal terminal 30c of the cathode terminal 30b of the cathode terminal 30a, And the earth terminal E is connected to the earth terminal channel 30e, respectively.

When the conductivity sensor 20 is non-contact type, the pair of first coil terminals 24a connected to the first coil 24 are connected to the pair of first coil electrodes 24a of the second input channel 32, A pair of second coil terminals 26a connected to the channel 30f and the second coil 26 are connected to the pair of second coil electrode channels 30g and the temperature terminal T is connected to the temperature terminal channel 30c, The output terminal 27 is connected to the output terminal channel 30h and the ground terminal E is connected when the earth terminal channel is formed.

The conductivity sensor 20 is formed by forming or not forming a plurality of temperature terminals T, a shielded terminal S and an earth terminal E connected to the temperature sensor 25, In the case where the temperature sensor 25 is formed, the temperature of the water quality for measurement at the measurement site is sensed in real time to compensate for the measurement, and in the absence of the temperature sensor, compensation is made using the measured value data relative to the predetermined temperature.

When the conductivity sensor 20 is connected to the input channel 30 of the analyzer 100, the processor 80 automatically detects the number of the electrodes and the value of the cell constant to determine the cell constant and the conductivity When the factor K value of the sensor 20 is not closely matched, the automatic compensation is performed. However, when the factor K of the conductivity sensor 20 is significantly different from the cell constant of the processor 80, There is a feature that can be corrected manually.

That is, considering the fact that the factor K value of the conductivity sensor 20 is different for each manufactured company and the manufactured conductivity sensor 20, the correct cell constant value is compensated for, thereby reducing the precise preparation process and the error rate have.

When the calibration operation of the conductivity sensor 20 is completed, a deposition type measurement method in which the conductivity sensor 20 is immersed in water for measuring the quality of the water quality, or a T-shape, Type measuring method for measuring the water quality, Y-shape, etc., and the insertion type measuring method which is combined with the sensor holder which allows the water quality to flow in a place where the water is introduced in one direction and discharged in the other direction, The present invention can be applied to a sampling measurement method in which water is sampled and then introduced into a sampling holder and discharged simultaneously with measurement. However, in the present invention, a deposition type measurement method will be described as an example.

An example of measuring the conductivity after connecting the analyzer 100 and the conductivity sensor 20 will be described below.

When the first button 71 of the operation unit 70 is set to the M mode, the second button 72 is set to the SHIFT mode, the third button 73 is set to the UP mode, and the fourth button 74 is set to the ENTER mode, The analyzer 100 is basically designated as an electrical conductivity measurement mode. When the first button 71 is pressed once, the resistivity is measured. When the analyzer 100 is pressed twice, the total solids are pressed three times, sodium (sodium) Pressing the fourth button (74) sets / stores and exits the function operation.

For example, an example in which the conductivity sensor 20 is connected to the analyzer 100 and the measurement mode is calibrated in the electrical conductivity state will be described.

1. When the first and fourth buttons 71 and 74 of the operation unit 70 are pressed simultaneously for one second, the calibration button is displayed in the " CAL " mode and the " SEL & When the "EC" appears in the window on the display unit 50 by pressing the fourth button 74, "CAL" is pressed again.

2. When "STD1" appears in the display unit 50, "STD1" flashes for 10 seconds when the conductivity sensor 20 is immersed in the standby state or the zero solution and the fourth button 74 is pressed. When the calibration is completed, the buzzer 13 , The blinking of the display unit 50 is stopped and the measured value is automatically displayed. If the display unit 50 indicates 0.05, the second button 72 and the third button 73 are operated Set the reading to 0.00 and press the fourth button (74) "ENTER".

3. When "STD2" appears on the display unit (50), immerse it in the calibration solution with the measurement range of 1413. If "ENTER" is pressed, "STD2" flashes for 10 seconds. When calibration is finished, the flash stops with the buzzer (13) The electromotive force value is turned on. If the display unit 50 indicates 1415, the second button 72 and the third button 73 are operated to set the display value to 1413 and the fourth button 74 " ENTER " ".

In the case of multipoint calibration using different calibration solutions for each conductivity sensor 20, each calibration measurement value is divided into a plurality of calibration display windows 55 and displayed on the display unit 50, And the calibration value can be manually inputted by the operation of the operation unit 70, so that the accuracy of the span calibration can be maintained.

At this time, "STD1" or "STD2" indicating the calibration solution for calibration of the conductivity sensor 20 is displayed, so that the user can easily grasp the indication value according to the calibration solution.

The connection of the conductivity sensor 20 is completed, it is necessary to perform calibration for accurate measurement. When the calibration section is selected in the operation section 70, the data inputted in advance to the processor 80 is grasped and the conductivity sensor 20 And the type of the calibration solution corresponding to the input cell constant of the processor 80 are displayed on the display unit 50. The conductivity sensor 20 is immersed in the calibration solution and is supplied to the calibration point Perform calibration and spam calibration repeatedly to ensure that the slope is straight.

At this time, each calibration measurement value is divided through a plurality of calibration display windows 55 and displayed on the display unit 50 when multipoint calibration is performed using a calibration solution having a different measurement range per one of the conductivity sensors 20, There is an easy feature.

When the measured value of the calibration solution is equal to the calibration set value input to the processor 80 during the calibration of the conductivity sensor 20, the automatic calibration status is displayed on the display 50, And the correct span calibration is performed by manually inputting the calibration value by the operation of the operation unit 70. [

The reason why the conductivity sensor 20 is subjected to the multipoint calibration is to match the measured value of the analyzer 100 to the value displayed in the calibration solution through the operation unit 70 because the calibration solution display values are different for each manufacturer.

When the measured value of the calibration solution is different from that of the ion electrode 20 in any of the calibration solutions at the two-point calibration (STD1 = 0, STD2 = 1413) in the conductivity measurement mode as an example of the calibration of the conductivity sensor 20, There is a feature that can be inputted manually through the operation unit 70. [

In this case, if the meaning of the calibration (STD1 = 0, STD2 = 1413) is indicated, the display unit 50 indicates '0' when the STD1 is in the standby state or the zero solution, and STD2 indicates the '1413' It is to display.

Hereinafter, the process of setting various modes will be described as an example.

1. When the "SET" mode is entered by simultaneously pressing the second button 72 "SHIFT" and the third button 73 "UP" of the operation unit 70 for one second, the temperature compensation setting "TEMP" 4 button (74) Press "ENTER" to enter the temperature setting.

2. When "TEMP" is displayed on the display unit 50, the third button 73 "UP" is pressed once to display the phrase "HA" for setting the upper / lower limit value. Similarly, pressing the fourth button (74) "ENTER" enters the upper / lower limit value setting.

3. When "TEMP" is displayed on the display unit 50, if the third button 73 "UP" is pressed twice, a cleaning cycle and a "CLE" phrase for setting the cleaning time are displayed. Similarly, when the fourth button 74 "ENTER" is pressed, the washing cycle and the washing time setting are entered.

4. When "TEMP" is displayed on the display unit 50, if the third button 73 "UP" is pressed three times, the phrase "UNIT" for setting the unit of measurement is displayed on the display unit 50 and the fourth button 74 " ENTER "to enter the measurement unit setting.

When all the settings are made, the previous menu is depressed by simultaneously pressing the first and fourth buttons 71 and 74, and the first button 71 " M "

In addition, the temperature compensation setting mode process will be described as an example.

1. Press the second button 72 "SHIFT" of the operation unit 70 and the third button 73 "UP" simultaneously for one second to enter the "SET" mode and the message "SET" is displayed.

2. Press the fourth button 74 "ENTER" of the operating unit 70 to enter. (If the first button 71 "M" is pressed to exit the "SET" state, the screen returns to the measurement screen. )

3. When the fourth button (74) is operated, the temperature setting phrase " TEMP " is displayed on the display unit (50).

4. Press the fourth button (74) "ENTER" again and "aSmU" appears to select automatic "SHIFT" and manual "UP" compensation.

5. When the temperature is automatically compensated, "1000" is basically indicated by compensating control of the temperature compensating unit 86 when the second button 72 "SHIFT" is pressed, which means PT1000. If it is used as it is, If the user desires to use the PT 100, the user presses the third button 73 "UP" to designate "0100". At this time, the fourth button 74 is set by pressing the "ENTER" button.

6. When manual compensation is performed, pressing the third button (73) "UP" in the "aSmU" state indicates "0250" basically, which means 25.0 ° C. If you use the fourth button (74) If it is desired to use the temperature at 30 ° C, for example, if the second button 72 "SHIFT" is pressed, the temperature is increased by 0.1 ° C. On the contrary, if the third button 73 "UP" At this time, the fourth button 74 "ENTER" is pressed to set the desired temperature.

7. After pressing the fourth button "ENTER" and saving the setting, press the first button (71) "M" and return to the measurement screen.

8. After the auto and manual settings are completed, press the fourth button (74) "ENTER" to display the initial set temperature unit "℃". Press the 4th button (74) , The third button (73) "UP" is pressed in the state of "° C" and the temperature changes to ° F or "F" on the display unit 50.

That is, the analyzer 100 of the present invention can perform the automatic compensation function of the temperature compensating unit 86 for automatically correcting the temperature or the manual compensation method using the operating unit 70, And can be displayed on the display unit 50 in degrees Fahrenheit (F).

For example, the electrical conductivity values are measured differently by temperature, and in electric conductivity measurement, temperature compensation refers to correcting the temperature-dependent slope.

An example of the upper / lower limit value setting (alarm alarm setting) mode process is as follows.

1. Press the second button 72 "SHIFT" of the operation unit 70 and the third button 73 "UP" simultaneously for one second to enter the "SET" mode and the message "SET" is displayed.

2. At this time, press the fourth button (74) "ENTER" to enter (if you press the first button (71) "M" to exit, return to the measurement screen)

3. When the user presses the fourth button 74, the temperature setting phrase " TEMP " is displayed. When the third button 73 is pressed once, the upper limit value " HA "

4. After pressing the fourth button 74 "ENTER", "pSmU" is displayed on the display unit 50.

5. When the conductivity sensor 20 is connected, for example, when the fourth button 74 is pressed, "HIGH" is displayed. At this time, when the third button 73 is pressed, "LOW" 3 button (73) Pressing "UP" repeatedly goes to "HIGH".

6. Press the fourth button (74) "ENTER" on the "HIGH" to enter "1413" by default. This means 1413 μS / cm. Pressing "SHIFT" moves the digit from left to right. The third button (73) is incremented by "UP" (the number is incremented by one unit, repeating from 0 to 9).

7. When the upper limit setting is completed and the fourth button 74 "ENTER" is pressed, "LOW" is displayed and then the fourth button 74 "ENTER" is entered again (if the first button 71 " M "as well as the upper limit setting.)

8. The lower limit setting defaults to 0000 and the setting method is the same as the upper limit.

9. When finished, press the fourth button (74) "ENTER" and save and press the first button (71) "M" mode.

Hereinafter, a cleaning cycle and a cleaning time setting mode process will be described as an example.

1. Press the second button 72 "SHIFT" of the operation unit 70 and the third button 73 "UP" simultaneously for one second to enter the "SET" mode and the display unit 50 displays a message "SET" .

2. At this time, press the fourth button (74) "ENTER" to enter. (If you want to exit, press the first button (71) "M"

3. When entering the display unit 50, the temperature setting phrase " TEMP " appears and the third button 73 is pressed twice, the " CLE " "And enter.

4. When the first cleaning cycle "CP" is displayed on the display unit 50 and the third button 73 "UP" is pressed, the cleaning time "CT" is displayed.

5. When the cleaning cycle "CP" is displayed on the display unit 50, if the fourth button 74 is pressed by pressing "ENTER", the initial setting "0000" is displayed. This means that "every 0 hours" It means in minutes.

6. If you want to change the cleaning cycle, press the second button (72) "SHIFT" to move the digits from left to right. The numeric value is incremented by "UP" Repeat until it is up.)

7. When the cleaning cycle ends and the fourth button (74) "ENTER" is pressed, the cleaning time "CT" is displayed. Press the fourth button (74) "ENTER" 71) Exit to "M", and so on.

8. The basic setting of the cleaning time is 0000, which means that the cleaning time is 0 seconds. If it is 0030, the cleaning relay is activated and stopped for 30 seconds.

9. When the cleaning setting is completed, press the fourth button (74) "ENTER" and save it. Then press the first button (71) "M" mode to return to the measurement screen.

The measurement unit setting mode process will be described as an example.

1. When the second button 72 "SHIFT" and the third button 73 "UP" are simultaneously pressed for one second to enter the "SET" mode, a message "SET" is displayed on the display unit 50.

2. At this time, press the fourth button (74) "ENTER" and enter. (If you want to exit, press the 1st button (71) "M" to return to the measurement screen.)

3. When entering the display unit 50 for the first time, the temperature setting phrase " TEMP " appears and the third button 73 is pressed three times to display the message " UNIT " "And enter.

4. The initial setting of the unit of measurement is indicated by "-NO-" on the display (50), which means that the unit is not used.

5. Press "S / cm" twice, "mS / cm" and "㎲ / cm" by pressing the second button "SHIFT" once in the "-NO-" Is converted into the control of the unit conversion section 81a.

6. At this time, if the fourth button (74) "ENTER" is pushed on the corresponding unit, the setting is completed, and a unit instead of the temperature may be displayed in the temperature display window 52 of the screen.

That is, when the measurement unit related setting is completed and measurement is performed, the measurement value and the display unit of the conductivity sensor 20 are calculated and converted through the operation conversion unit 81 and the unit conversion unit 81a in the display unit 50, (50), the unit conversion relation is as follows.

First, in the conductivity measurement mode, the electrode formula selected from one of the cell constants of 0.01, 0.1, 1, and 10 of the conductivity sensor 20 is selected or the electrode formula is selected and connected to the analyzer 100.

The cell constant or the C value of the conductivity sensor 20 is set and the K value of the conductivity sensor 20 is corrected.

1. Conductivity measurement mode is converted into 1S / cm = 1,000 mS / cm = 1,000,000 uS / cm, and is displayed on the display unit 50 in a desired unit.

2. The conversion in the EC measurement mode (conductivity = EC) is converted into the relationship of 0.1 mS / cm = 0.1 EC, 1 mS / cm = 1 EC and 10 mS / cm = 10 EC, respectively.

3. In the CF measurement mode, the unit conversion is converted into the relationship of 0.1 mS / cm = 0.1EC = 1 CF, 1 mS / cm = 1 EC = 10 CF, 10 mS / cm = 10 EC = 100 CF,

4. The unit conversion of total solid (TDS) measurement mode is divided into American type (EC × 500), European type (EC × 640), and Australian type (EC × 700) (EC 1.0 or CF 10) = 500 ppm, the European type 1 ms / cm (EC 1.0 or CF 10) = 640 ppm and the arsenic 1 ms / cm And is displayed on the display unit 50 in a desired unit.

In the conductivity measurement, the conductivity is measured in terms of 1 ms / cm and converted into ppm of TDS. However, conventionally, each manufacturer has different crosstalk in different countries. However, the analyzer 100 of the present invention has the operation conversion unit 81 And the unit conversion unit 81a, the display unit 50 can display all of the US, Europe, and Australian notation systems.

In addition, when the Cl anion total solids (TDS) measurement ^{_{-, NO 2 -, NO 3}} -, F -, HCO 3 -, CO 3 2-, SO 4 2-, H 2 PO 4 - or a cation Na _^+, K ⁺ _, NH ₄ ⁺ _, Mg ²⁺ _, Ca ²⁺ _, Fe ²⁺ _, Mn ²⁺ _and Al ³⁺ components appear at different ratios when the volume or the quantity is assumed to be 1, And the like.

5. In the hardness measurement mode, calcium carbonate 1 gran [G = 64.79891 g] is dissolved in one gallon of water, for example, in terms of ppm, as follows (see FIG. 14)

In this case, 1 mg of 1 ppm means that 1 mg is dissolved in 1 L, so 1 gallon is 3.785412 liters, so 1 gpg is converted into 64.79891 mg / G x 1 G / 3.785412 L = 17.11806006 mg / L or 17.11806006 ppm and displayed on the display unit 50 appear.

6. In the resistivity measurement mode, the unit conversion is 1MΩ / cm (1,000,000Ω / cm) = 1 μs / cm, which is a standard conversion factor, from which a reciprocal relationship is established. Conductivity is expressed as a resistivity value.

Standard resistance value (1,000,000? / Cm)? Conductivity (占 퐏 / cm) = Resistance value (? / Cm)

For example, when the conductivity is 0.1 mu s / cm, it is expressed as 1,000,000? / Cm? 0.1 mu s / cm = 10,000,000? / Cm (10 M / cm).

Conversely, when the resistance value is converted into conductivity, the conversion formula is represented by a standard resistance value (1,000,000? / Cm)? Resistance value (? / Cm) = conductivity (占 퐏 / cm) ), They are respectively converted into a relationship of -1,000,000? / Cm? / 10,000,000? / Cm = 0.1 (? / Cm) and displayed on the display unit 50 in a desired unit, There is a feature that convenience can be grasped without work.

In other words, the conductivity sensor 20 can be easily displayed without any replacement with another sensor while measuring the conductivity of the sensor.

On the other hand, a solution of sodium chloride (NaCl), a solution of sodium hydroxide (NaOH), a solution of ammonium hydroxide (NH4OH), a solution of ammonia (NH3), a solution of hydrogen chloride (HCl), a solution of sulfuric acid (H2SO4) Measuring the solution conductivity of a solution, a hydrofluoric acid (HF) solution or a sulfur dioxide (SO 2) solution, the weight% value, ppm and mg / L value of the solution can be calculated. (See Fig. 15)

Thus, in the table, for example, when the measurement value of NaCl is 17,600 μS / cm ^-1 , weight% = 1 and ppm = 10,000, and NH ₃ is 810 μS / cm ^-1 . The measurement value of the remaining solutions can be simply calculated.

When the measurement is performed after the above setting is completed, the analog signal measured by the conductivity sensor 20 in the water quality is transmitted to the analyzer 100, converted into a digital signal by the processor 80, And displays it on the display unit 50 through the display unit 50.

In order to display measured values of conductivity, hardness, resistance, resistivity, total solids, salinity, and sodium (sodium), which can be measured using a conductivity sensor, a conventional conductivity measuring system or conductivity meter The measuring system and the meter corresponding to the measurement items must be separately provided. In contrast, the present invention is applicable to the case where the analyzer 100 and the single conductivity sensor 20 are used to measure the conductivity, The analyzer 100 of the present invention can measure the measured values of the hardness, resistance, resistivity, total solids, salinity, and sodium (sodium) items through the display unit 50, And the cost of purchasing equipment.

In addition, the analyzer 100 according to the present invention can form and control all the functions related to the measurement in the analyzer 100 itself, and is small in size, easy to handle and easy to handle, .

In addition, the analyzer 100 of the present invention displays a normal operation state and an abnormal operation state through the display unit 50 and the lamp unit 60 differently from the display unit 50 through the control of the reversal / non- Can be quickly identified through the naked eye or sound through the buzzer 13 to reduce the error of the measurement due to the initial response and can be accurately detected by real-time communication through the control center, the camera 14 and the microphone 15 And an initial response is possible.

The analyzer 100 of the present invention can calculate the control value using the error between the output value of the object to be measured and the set value by using the PID controller 87. [

The PID controller 87 is characterized in that the proportional integral control (PI control) requires a certain time to reach the target value, but it can quickly reach the target value when the differential control (D control) is added. Differential control means, for example, that when the difference between the previous error and the previous error is large, the manipulated variable is increased a lot and the arrival time to the target value can be shortened. This makes it possible to respond quickly to disturbance in measurement.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: Case 10a: Secondary case
10b: heat radiation hole 10c: body
10d: front cover 10e: cover
10f: Lamp hole 10g: Pad
11: first power terminal 12: second power terminal
13: buzzer 14: camera
15: microphone 16: earphone jack
17: Removable storage slot 18: Auxiliary power supply
20: Conductivity sensor 21: Sensor body
22: first electrode 23: second electrode
25: temperature sensor 30: input channel
30a: first electrode channel 30b: second electrode channel
30c: Temperature terminal channel 30d: Shield terminal channel
30e: earth terminal channel 31: first input channel
32: second input channel 40: output channel
41: Signal output terminal 42: Temperature output terminal
43: HART output terminal 44: RS232C output terminal
45: RS485 output terminal 46: Cleaning output terminal
50: Display part 51: Measured value display window
52: temperature display window 52a: sticker
52b, 52c: first and second LED lamps 53: electrode display window
54: Error warning window 55: Calibration display window
56: Output display window 57: Cleaning display window
58: graphic window 59: display switching section
59a: frame 59b:
60: lamp unit 61 to 65: lamps 1 to 5
70: Operation section 71 to 74: First to fourth buttons
75: illuminance sensor 76: dial
80: Processor
81: Operation conversion unit 81a: Unit conversion unit
82: communication unit 83: language conversion unit
84: inverting / non-inverting part 85: cell constant judging unit
86: Temperature compensation section 87: PID control section
88: output conversion unit 100: analyzer
200: Panel 300: Wall
400: Pipe 500: Panel
B: Bracket T: Temperature terminal
S: Shield terminal E: Earth terminal

Claims (29)

1. A conductivity analyzer for measuring electrical conductivity of various types of water,
A plurality of output channels 40 for outputting measured values are formed at one side of the input channel 30 connecting the conductivity sensor 20 to the rear of the case 10,
The resistance of the water quality is measured by the conductivity sensor 20 connected to the input channel 30 and the measured values of the conductivity, hardness, resistance, resistivity, total solids, salinity, and sodium (sodium) And displays the temperature, the cell constant, the cleaning display, and the calibration display, and displays the steady state and the abnormal state differently from each other by the inverting / non-returning unit 84 of the processor 80. [ (50) is formed in front of the case (10)
A lamp unit 60 is formed around the display unit 50 to indicate a steady state, an abnormal state, an upper / lower limit value, a connection state of the ion electrode 20, an error indication of electrode connection unmeasured, ,
A plurality of relay operations for setting a measurement value, setting and calibrating an upper limit value and a lower limit value of a measurement range, setting a washout, calibration operation of the conductivity sensor 20, ) Is configured to display measured values of water quality used in a power plant or various fields. The method of claim 1, wherein the conductivity sensor (20) is formed of one of a contact type and a non-contact type,
The contact type electrode is formed of one of two electrodes, three electrodes, and four electrodes,
Wherein the non-contact type is configured in an electrodeless manner. The method of claim 1 or 2, wherein when the conductivity sensor (20) is an electrode type, a cell constant (C) of a sensor connected to the input channel (30) In addition,
And the coefficient K of the conductivity sensor 20, which is an error rate deviating from the theoretical cell constant value at the time of fabrication, after the cell constant is set, can be manually corrected through the operation unit 70 Smart Conductivity Analyzer. The method according to claim 1 or 2, wherein the measurement value display unit of the conductivity sensor (20) is one of S / cm, mS / cm,
It is displayed in EC unit in EC measurement mode,
In CF measurement mode, it is displayed in CF unit,
Unit conversion in total solid (TDS) measurement mode: It is expressed in ppm in the case of American type (EC × 500), in case of European type (EC × 640) and in case of Australian type (EC × 700)
In hardness measurement mode, it is displayed in one of gpg, gpm, ppm, ° e, ° Clark, ° fH,
In the resistance measurement mode, it is displayed in one of Ω, kΩ, and ㏁,
The unit conversion unit 81a of the processor 80 is selectively displayed on the display unit 50 with the conversion control of the unit 80a through automatic or manual operation so as to be displayed in units of? / Cm, k? / Cm, and? / Cm in the resistivity measurement mode A smart conductivity analyzer for the field. The temperature sensor according to claim 1 or 2, wherein the conductivity sensor (20) is provided with a plurality of temperature terminals (T), a shielded terminal (S) Wherein the smart conductivity analyzer comprises: The method according to claim 1 or 2, wherein the conductivity sensor (20) is used to measure a solution of sodium chloride (NaCl), sodium hydroxide (NaOH), ammonium hydroxide (NH4OH) The solution conductivity of one of HCl solution, H2SO4 solution, HNO3 solution, HF solution and SO2 solution is measured and the weight% value, ppm, mg / L The value can be calculated,
Conductivity and weight% values, ppm, and mg / L values of other solutions not measured using the weight% value, ppm, and mg / L calculated values can be calculated by the arithmetic and conversion unit 81 and displayed on the display unit 50 Wherein said smart conductivity analyzer comprises: The method of claim 1 or 2, wherein the conductivity sensor (20) is calibrated by connecting a conductivity sensor (20) to the input channel (30) The measured value of the calibration solution of the conductivity sensor 20 is displayed on the display unit 50 through the control of the processor 80,
Wherein each calibration measurement value is divided through a plurality of calibration display windows (55) and displayed on the display unit (50) by using various calibration solutions having different measurement ranges per one conductivity sensor (20) Smart conductivity analyzer for the field. 8. The method according to claim 7, wherein when the measured value of the calibration solution is different from the measured cell value of the sensor recognized by the processor (80) during the calibration of the conductivity sensor (20) Wherein the input is configured to allow manual input of a value. The input channel (30) according to claim 1 or 2, wherein the input channel (30) forms a four-electrode first input channel (31) so that the conductivity sensor (20)
The input channel 30 may include a second input channel 32 connected to the conductivity sensor 20 when the conductivity sensor 20 is of non-electrode type,
Wherein the automatic conductivity analyzer is configured to be able to perform an automatic recognition setting according to the conductivity sensor (20) connected to the input channel (30) or manually set using the operation unit (70). The method of claim 9, wherein the first input channel (31) of the input channel (30) comprises one or more anode electrode channels (30a), one or more Kathode electrode channels (30b) A shield terminal channel 30d, and an earth terminal channel 30e,
The second input channel 32 of the input channel 30 includes a pair of first coil electrode channels 30f, a pair of second coil electrode channels 30g, a temperature terminal channel 30c, 30h) and an earth terminal channel (30e) are connected to each other. 11. The method of claim 10, wherein the temperature terminal channel (30c) is configured in a four-wire system comprising a pair of first temperature channels (T1) and a pair of second temperature channels (T2) Analyzer. The output channel (40) comprises an isolation signal output terminal (41) for converting a measurement signal of the ion electrode (20) by an arithmetic conversion unit (81) and outputting it at 4 to 20 mA or 1 to 5 V Wherein a plurality of insulation temperature output terminals (42) for outputting temperature measurement values are formed, and measurement values and temperature values are selectively or simultaneously outputted as an output signal. The power supply according to claim 1, wherein a first power supply terminal (11) of AC 100 V or AC 220 V is formed in the case (10), and an inverter is built in the case (10) (12)
Wherein the auxiliary power supply unit (18) is formed in the case (10) to continuously supply power when the power is suddenly turned off to maintain the measurement state. The display device according to claim 1, wherein the display unit (50) is one of an LCD method, an LED method, an OLED method, a touch panel method, and an SND (7-segment display)
The LCD system has a built-in backlight function and is formed of one of LCM, TN, HTN, STN, FSTN and TFT,
The LCD method, the LED method, the OLED method, and the touch panel method include a measurement value display window 51 for numerically or graphically displaying measured values, and an automatic or manual method of selecting the temperature in degrees Celsius or degrees Fahrenheit. An electrode display window 53 showing the type of the connected electrode, an error warning window 54 to be displayed at the time of connection of the electrode that does not meet the measurement, a calibration display window 55 to display the calibration contents, An output display window 56 for transferring the measured value to the display screen and a cleaning display window 57 for displaying the cleaning content are formed to be divided or formed to be switched from one display screen to another display screen,
The SND (7-segment display) system includes a measurement value display window 51 for displaying a measurement value and a temperature display window 52 for displaying the temperature in degrees Celsius or degrees Fahrenheit by automatic or manual selection A smart conductivity analyzer for the field. The display apparatus according to claim 1 or 14, wherein the display unit (50) includes: a display state in a normal state in which there is no abnormality related to the measurement, the lower limit of the upper limit of the measurement range, In the abnormal state in which the abnormality occurs, the color of the display unit 50 is displayed differently or displayed as a flicker notification operation under the control of the inverting / non-returning unit 84 connected to the processor 80;
The Smart Conductivity Analyzer according to claim 1, wherein the display unit (50) is configured such that a font type of a display is changed by an LCD method, an LED method, an OLED method, and a touch panel method. 15. The apparatus according to claim 14, wherein a buzzer (13) is formed on one side of the case (10)
Wherein a camera (14), a microphone (15), and an earphone (16) are formed on one side of the case (10) to configure a real-time video communication with a field and a control center. The method of claim 1 or 14, wherein when the conductivity sensor (20) is connected to the input channel (30), the cell constant value (C) of the conductivity sensor (20) The cell constant value determination unit 85 determines whether or not the corresponding conductivity sensor 20 is connected and the cell constant is automatically displayed or displayed by manual operation of the operation unit 70. [ Smart conductivity analyzer for the field. The system of claim 12, wherein the format of the output signal comprises an output conversion unit (88) for automatically or manually selecting one of an output of various voltage and current signals, HART communication, RS232C (RS485, Modbus, TCP / IP) Wherein the analyzer comprises a smart conductivity analyzer for on-site use. The display device according to claim 1 or 14, wherein the display unit (50) is integrally formed with the case (10) and connected to the processor (80)
Wherein the display unit (50) is installed in a separate case (10a) separated from the case (10) and configured in a separated form. The system according to claim 14, wherein the processor (80) can be formed of a nonvolatile or volatile memory, and the communication port (82a) formed in the case (10) To transmit measurement data and to receive data,
The processor 80 displays the real-time measurement value on the display unit 50 using the communication unit 82 using Bluetooth or Wi-Fi, and transmits the measurement data to an external device of another smart phone or a personal portable terminal, To download and manage data of the device,
Wherein a portable storage slot (17) for connecting a USB device and an SD card device is formed in the case (10) or the separation case (10a) of the display unit (50). The apparatus according to claim 1, wherein the display unit (50) displays an abnormal measurement slope at the time of measurement, a hunting phenomenon occurs in a measured value, and a cleaning indication when measurement is not performed, And a signal for activating the smart conductivity analyzer. The temperature sensor according to claim 2, wherein when the temperature sensor (25) is not formed in the conductivity sensor (20), the temperature terminal channel (30c) of the input channel (30) One is connected to automatically correct the temperature,
And the manual temperature compensation unit is configured to manually input the temperature measurement data corrected according to the equation into the temperature measurement data in degrees Celsius (° C) or Fahrenheit (F) manually through the operation unit (70). 2. The apparatus according to claim 1, wherein the operation unit (70) comprises at least one of a selection mode of the measurement and conductivity sensor (20), a calibration mode, a unit selection mode, a temperature compensation mode, an upper / lower limit value setting mode, The mode is changed according to the number of manipulations by using one button among a plurality of buttons so as to perform the related mode, setting mode, enter mode, lock / release mode, general user mode or engineer mode,
When two or three of the buttons are operated at the same time, the mode is configured to perform another mode,
The button constitutes a braille character 70a for the visually impaired,
And a dial operation unit is formed on one side of the button. The method of claim 1 or 14, wherein the display unit (50) forms a measurement value or a measurement related message to be translated and displayed in various languages through a language conversion unit (83) connected to the processor (80)
The display unit 50 is configured to manually adjust the color, brightness, and ON / OFF through the operation of the operation unit 70 or to automatically adjust the brightness and ON / OFF according to the amount of light by detecting the illuminance Wherein said at least one smart conductivity analyzer comprises: The display device according to claim 1, wherein the display switching unit (57) is provided on the front surface of the display unit (50) and the display content of the display unit (50) is switched by the display switching unit (57) And the screen contents can be confirmed at the upper or lower position where the user can not confirm the screen contents. The apparatus according to claim 1, wherein the case (10) comprises a panel mounting type in which a panel (200) is inserted and installed for installation on a measurement site, a wall mounting type installed on a wall surface (300) ), And a panel-mounted type in which the device is mounted on a panel (500). 2. The smart electric conductivity measuring system according to claim 1, wherein the processor (80) is configured with a PID controller (87) for calculating a control value by using an error between an output value of an object to be measured and a set value, Analyzer. The method according to claim 5, wherein the anion Cl ^- _, NO ₂ ^- _, NO ₃ ^- _, F ^- _, HCO ₃ ^- _, CO ₃ ^{2 -} _, SO ₄ ^{2 -} _, H ₂ PO ₄ ^{- _{Na +, K +, NH 4}} +, Mg 2 +, Ca 2 +, Fe 2 +, Mn 2 +, hyeonjangyong smart conductivity analyzer characterized in that configured to display on the display 50 by calculating the Al ^{3 +} components . The electronic device according to claim 1, wherein a lamp hole (10f) is formed in a front cover (10d) of the case (10) and a sticker (52a) printed with degrees Celsius The first and second LED lamps 52b and 52c are installed in the lamp hole 10f and the unit of degrees Celsius or Fahrenheit according to the temperature measurement is displayed by the emission of the first and second LED lamps 52b and 52c Respectively,
(° C) and Fahrenheit (F) on the pad (10g) attached to the front surface of the front cover (10d) of the case (10) 2LED lamps 52b and 52c are provided in the lamp hole 10f of the front cover 10d so that only when the first and second LED lamps 52b and 52c emit light, ) Or Fahrenheit (F) display is projected on the screen.

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