JPH11142396A - Water quality-measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extremely lower a probability of breaking measurement tips inadvertently by a simple and rational improvement. SOLUTION: A plurality of kinds of water quality-measuring tips 6B-6T are detachably connected to a sensor main body 1 via connectors 8A-8C. The tips 6B-6T are separated by color to a plurality of groups based on a predetermined water pressure-resisting level, so that water pressure-resisting levels of the tips can be identified visually. Moreover, a message on the basis of a measurement result of a water depth which urges the detachment of the tip which cannot stand a further water pressure is displayed at a display device 9. Besides, the need for the detachment of the tip is informed by sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality measurement suitable for use in water quality surveys of rivers, lakes, marshes, seas, etc., water quality management in aquaculture and hydroponics, and water quality measurement of hot water such as hot springs. It concerns the device.

[0002]

2. Description of the Related Art Water quality is measured by dissolved oxygen, electric conductivity, oxidation-reduction potential, hydrogen ion (hereinafter, pH), pH
There are various items such as various ions (chloride ion and fluoride ion), turbidity, etc., along with water temperature and water depth at the time of measurement, as well as salt concentration and density calculated based on conductivity. A measurement is also made.

[0003] Performing these measurements individually with a dedicated measuring device complicates the operation in addition to the problem of cost. Therefore, a water quality measuring device capable of performing the above-mentioned water quality measurement with one unit has been developed. It is.

[0004] Specifically, a pressure gauge is provided as a water depth measuring chip on a sensor body provided with a hanging holder, and a conductivity measuring chip is integrally provided with a temperature sensor. , PH measuring chip, measuring chip for various ions other than pH, measuring chip for measuring oxidation-reduction potential, measuring chip for dissolved oxygen, and measuring chip for turbidity can be detached via connectors. To facilitate the maintenance of various chips.

Further, the number of connectors for connecting the chips is reduced so that three kinds of measuring chips of pH, oxidation-reduction potential and various ions other than pH are connected to the sensor body in a replaceable manner. They have also developed a compact water quality measurement device.

Incidentally, since the above-mentioned various measuring chips have different water pressure resistance levels due to the configuration of the response section and also have different temperature resistance levels, the instruction manuals and the like include the water pressure resistance levels of the various measuring chips. When measuring water quality exceeding a certain water depth or temperature, remove the chip that cannot withstand the water pressure or temperature and attach a watertight cap to the connector part on the sensor body side. In general, it is described to promote prevention of breakage of the measurement chip.

[0007]

However, in the water quality measuring device developed above, there are eight types of measuring chips including a temperature sensor. Among them, the measuring chips for various ions other than pH are used. Has almost the same level of water pressure resistance and temperature resistance, but at this stage, 13 types of measurement chips are prepared. It is extremely difficult to do so, and it is conceivable that the measurement chip may be erroneously damaged.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has a simple and rational improvement so that a water pressure level and a temperature resistance level of a measuring chip can be visually confirmed. The purpose is to make the measurement chip hard to break.

[0009]

In order to achieve the above object, according to a first aspect of the present invention, a plurality of types of water quality measuring chips are detached from a sensor body having a pressure-resistant structure provided with a suspending holder through a connector. In the water quality measuring device that is connected as possible, the plurality of types of chips are color-coded into a plurality of groups based on a predetermined withstand pressure level, so that the withstand pressure level of the chip can be visually identified. There is a feature in the point.

In the second invention, a plurality of types of water quality measurement chips are detachably connected to a sensor body having a heat-resistant structure provided with a hanging holder through a connector.
It is characterized in that a color is classified into a plurality of groups based on a predetermined withstand temperature level so that the withstand temperature level of the chip can be visually identified.

[0011] That is, although the water pressure resistance level and the temperature resistance level of the various measurement chips vary greatly, they can be roughly divided into three or four types, for example. Based on the color coding, this group is colored red for measurement chips with low water pressure and temperature resistance levels, and yellow for measurement chips with medium water pressure and temperature resistance levels. For a measurement chip having a high water pressure resistance level and a high temperature resistance level, by setting this group to blue, it is possible to roughly check the water pressure resistance level and the temperature resistance level of the measurement chip.

[0012] Therefore, the color-coded mode is determined by how many meters the permissible measurement depth of the chips of each color-coded group is, or by what degree of temperature the heat-resistant temperature of the chips of each color-coded group is. Remembering only the number (three aspects in the above case), it is not possible to determine whether the measurement chip currently connected to the sensor body can withstand the depth and temperature of the future water quality measurement. This is easily possible, and the probability of accidentally damaging the measuring chip is extremely low.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a water quality measuring device according to an embodiment of the present invention, and FIG. 2 is a block diagram of the water quality measuring device.

In these figures, reference numeral 1 denotes a sensor main body, a power supply 2 and an operation unit 3 having a memory function unit 3a.
And a data logger 4 for recording the calculated measurement data in a time-series manner in a watertight case 5 having a pressure-resistant structure.

6A is a water depth measuring chip for measuring the water depth based on the detection of the water pressure, for example, by a pressure gauge.
Buried in Reference numeral 6B denotes a conductivity measuring chip for calculating salt concentration and density based on the conductivity, and is provided with a temperature sensor 7 integrally.

6C is a turbidity measuring chip, 6D is a dissolved oxygen measuring chip, of which the conductivity measuring chip 6B and the turbidity measuring chip 6C are connected via a 6-pole type connector 8A, and The dissolved oxygen measurement chip 6D is detachably connected to the sensor main body 1 via a three-pole type connector 8B.

Reference numeral 6E denotes a pH measurement chip in which a comparative electrode and a glass electrode are combined, 6F denotes a redox potential measurement chip, and 6G denotes a chloride ion measurement chip other than pH. In addition to the chloride ion measurement chip 6G, a fluoride ion measurement chip 6H, a nitrate ion measurement chip 6I, a calcium ion measurement chip 6J, a cyan ion measurement chip 6K, a sulfide Ion measuring chip 6L, iodine ion measuring chip 6M, bromine ion measuring chip 6N
, A copper ion measurement chip 6P, a cadmium ion measurement chip 6Q, a lead ion measurement chip 6R, a thiocyan ion measurement chip 6S, and a silver ion measurement chip 6T.

The measurement chips 6G to 6T, the pH measurement chip 6E, and the oxidation-reduction potential measurement chip 6F are:
The measurement chip is detachably connected to the connector part of the sensor body 1 with compatibility through a four-pole connector 8C in which two poles for chip identification are added to two poles for signal circuit. All of AB to 6T are connected to the sensor main body 1 so that the response unit comes in contact with water in a submerged state.

Reference numeral 9 denotes a display device, in addition to a display 10 for displaying water quality measurement data and the like, a power key 1
1, function key 12, measurement start / end key 13, calibration key 14, select key 15, up / down key 16, 1
7 and the like, and the display device 9 and the sensor main body 1 are connected to each other by a waterproof communication cable 18 which also serves to suspend and hold the sensor main body 1.

In the water quality measuring device having the above configuration, when the sensor body 1 is submerged by operating the communication cable 18, measurement data based on outputs from various measurement chips is stored in the memory function unit 3a, and the measured values are stored in the memory function unit 3a. It is displayed on the display 10.

Further, by arbitrarily operating the data fetch switch S of the data logger 4 with the function key 12, the measurement data is logged in the data logger 4. The dissolved oxygen, conductivity, redox potential, pH The water quality can be measured with high accuracy in a total of ten items including ion concentration other than pH, turbidity, water temperature at the time of measurement, water depth, and salt concentration and density calculated based on conductivity.

Then, not only can various kinds of water quality measurement data and water depth measurement data at the time of the water quality measurement be accurately associated and called out from the memory function unit 3a, but also the information of the data logger 4 can be input to the printer. The measurement data can be printed.

In the water quality measuring device having the above configuration,
Various measurement chips can be visually prevented from being damaged by water pressure. That is, the withstand pressure level of the measuring tip is
Although different for each chip maker, the water pressure resistance levels of the various measurement chips 6A to 6T manufactured by the present applicant include the water depth measurement chip 6A and the temperature sensor 7 among them.
The conductivity measurement chip 6B and the turbidity measurement chip 6C provided with the above can withstand water pressure at a depth of about 100 m.
These are made into a high-level chip group, and the holder of the conductivity measurement chip 6B and the turbidity measurement chip 6C is made of synthetic resin blue except for the water depth measurement chip 6A embedded in the sensor body 1. I have.

The pH measuring chip 6E and the oxidation-reduction potential measuring chip 6F can withstand a water pressure at a depth of about 75 m. These are made into a medium-level chip group, and the holder is made of synthetic resin yellow. ing.

The remaining dissolved oxygen measurement chip 6D, pH
The measurement chips 6G to 6T other than the above can withstand the water pressure at a water depth of about 50 m. These are formed as a low-level chip group, and the holder is made of synthetic resin red.

That is, the measurement chips 6B to 6T are roughly divided into three types of chip groups, and these are classified into blue, yellow, and red in order of the group having the highest water pressure resistance based on the three colors of the traffic light, and In the instruction manual, the water pressure level of each of the measuring chips 6B to 6T and the measuring chip 6
It is specified that B to 6T are color-coded into three types of chip groups. Further, when measuring the water quality exceeding a certain water depth, the chips that cannot withstand the water pressure are removed, and as shown in FIG. , Connector part 2 on the sensor body side
It is described that the watertight cap 19 is attached to the product 1, and the instruction manual, the water quality measuring device, and the watertight cap 19 are set as a product, and the product is shipped and sold.

Therefore, the user can use the measuring chips 6B to 6T
You can visually recognize the water pressure level of
Remembering how many meters the permissible measurement depth for each of the color-coded groups is, whether the measurement chip currently connected to the sensor body can withstand the water depth for future water quality measurement. It is easy to make a decision and the probability of accidentally damaging the measuring chip is extremely low.

At this time, it is preferable to display on the display device 9 a message prompting removal of the chip that cannot withstand the water pressure further based on the water depth measurement result from the water depth measurement chip 6A, 9 is provided with an electronic sound generator 20 so as to notify the necessity of chip removal by voice in addition to displaying a message prompting chip removal.

That is, as shown in FIGS. 4A to 4C, a connector 8 for connecting various measuring chips 6B to 6T to the sensor body 1 except for the water depth measuring chip 6A embedded in the sensor body 1. This is for a signal circuit for the arithmetic unit 3 (shown by two connector poles,
B and 6C have 6 poles, the measurement chip 6D has 3 poles, and the measurement chips 6E, 6F and 6G to 6T have 2 poles. Aside from 2) for group identification
It is assumed that the connector poles a and b are provided.

Then, the connector poles a and b and the ground pole c for the signal circuit, for example, are electrically disconnected or connected to the group identification circuit A in the connector section 22 on the chip side, thereby providing a high level. Measurement chip (6B, 6
C), the medium-level measurement chips (6E, 6F) and the low-level measurement chips (6D, 6G to 6T) are distinguished.

Specifically, three connector poles a, b, c
Are electrically connected or disconnected to obtain a total of four connection modes. Of these, three connection modes are arbitrarily selected and, for example, a high-level measurement chip (6B, 6C)
The connector part 22 provided on the side is connected to the connector pole a for group identification with respect to the connector pole c for signal circuit.
A connection mode in which b is open and the connector poles a and b for group identification are short-circuited (see FIG. 4A).
Is to choose.

On the other hand, a medium level measuring chip (6E, 6
The connector part 22 provided on the F) side includes a connector pole c for signal circuit and connector poles a and b for group identification.
And the connection mode for short-circuiting all of them (see FIG. 4B), and the low-level measurement chips (6D, 6G to 6T)
For the connector portion 22 provided on the side, a connection mode (see FIG. 4C) in which the connector pole c for the signal circuit and the connector poles a and b for chip identification are all open is selected, and the chip identification is performed. The circuit A identifies the high level, the middle level and the low level chip groups.

If a chip group that cannot withstand more water pressure is detected based on the group identification information and the water depth measurement information, a message prompting removal is displayed based on the detected information. , Plus the need to remove the tip,
The electronic sound generator 20 can be notified by voice.

In the above embodiment, the water pressure resistance level of each measurement chip can be visually identified.
It is also possible to visually prevent thermal damage to various measurement chips.

That is, the withstand temperature level of each measurement chip is as follows:
Although this also differs for each chip maker, among the measurement chips 6A to 6T manufactured by the present applicant, a water depth measurement chip 6A, a conductivity measurement chip 6B having a temperature sensor 7, and a pH Since the measurement chip 6E and the measurement chip 6F for oxidation-reduction potential can withstand a water temperature up to about 80 ° C., these are classified into a high-level chip group, and the measurement chip 6C for turbidity and various types other than pH are used. Since the measurement chips 6G to 6T can withstand a water temperature up to about 60 ° C., they are classified into a medium level chip group, and the conductivity measurement chip 6B has a concern that the diaphragm may be damaged at about 45 degrees. Therefore, they are grouped into low-level chips.

That is, the measurement chips 6A to 6T are roughly divided into three types of chip groups, and these are classified into blue, yellow, and red in the order of the group with the highest withstand temperature level based on the three colors of the traffic light. The user can visually recognize the temperature resistance levels of the measurement chips 6A to 6T, and the probability of erroneously thermally damaging the measurement chip is extremely low.

At this time, although the detailed description is omitted, the same means as described above is adopted, and based on the measurement result of the water temperature from the temperature sensor 7, the chip which cannot withstand a temperature higher than that temperature can be used. A message prompting removal is displayed on the display device 9, and in addition to this message display,
It is desirable to be configured so that the necessity of chip removal is announced by voice.

[0038]

As described above, according to the first aspect of the present invention, the waterproof pressure level of the measuring chip can be visually confirmed, so that the measuring chip currently connected to the sensor main body can be used in the future. It is easy to determine whether or not the water quality measurement can withstand the water depth.

According to the fourth aspect of the present invention, the temperature resistance level of the measuring chip can be visually confirmed.
In the future water quality measurement, it is possible to easily determine whether or not the measurement chip connected to the sensor main body can withstand heat, and in any invention, by a simple and rational improvement, The probability of accidentally damaging the measuring chip can be extremely reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a water quality measuring device.

FIG. 2 is a block diagram of a water quality measuring device.

FIG. 3 is an explanatory view of mounting a watertight cap after a measurement chip is removed.

FIGS. 4A to 4C are explanatory diagrams showing three connection modes arbitrarily selected from four connection modes.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sensor main body, 6A-6T ... Measuring chip, 9 ... Display device, 18 ... Communication cable (hanging holder),
20 ... an electronic voice generator.

Claims (6)

[Claims] 1. A plurality of types of water quality measurement chips are detachably connected to a sensor body having a pressure resistance structure provided with a hanging holder through a connector, and the plurality of chips are connected to a plurality of chips based on a predetermined water pressure resistance level. A water quality measuring device, which is color-coded into the following groups so that the water pressure level of the chip can be visually identified. 2. The sensor body includes a chip for measuring water depth based on water pressure detection, and a display device for displaying water quality measurement data by various chips is connected to the sensor body by a communication cable for suspending and holding the sensor body. 2. The water quality measuring device according to claim 1, wherein a message prompting removal of a chip that cannot withstand a further water pressure is displayed on a display device based on a measurement result of the water depth. 3. The water quality measuring device according to claim 2, wherein an electronic sound generating device is provided in the display device, and the necessity of chip removal is notified by sound. 4. A plurality of water quality measurement chips are detachably connected to a sensor body having a heat-resistant structure provided with a hanging holder through a connector, and the plurality of chips are connected to a plurality of chips based on a predetermined withstand temperature level. A water quality measuring device characterized by being colored so as to be able to visually identify the withstand temperature level of the chip. 5. A sensor device comprising a temperature sensor, a display device for displaying water quality measurement data by various chips is connected to the sensor main body by a communication cable for suspending and holding the sensor main body, and based on a measurement result of the water temperature. 5. The water quality measuring device according to claim 4, wherein a message prompting removal of the chip that cannot withstand the water temperature higher than that is displayed on the display device. 6. The water quality measuring device according to claim 5, wherein an electronic sound generating device is provided in the display device, and the necessity of chip removal is notified by sound.