JP2013019701A - Analyzer having calendar-schedule function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an analyzer capable of clearly displaying content, day and time of a maintenance to be carried out on an analyzing section.SOLUTION: The analyzer includes: a liquid crystal display device with a touch panel; and a liquid crystal controller for controlling screen display on the liquid crystal display device. The liquid crystal controller creates at least screens to be displayed on the liquid crystal display device including: a calendar schedule screen that displays a schedule held by a schedule data memory at least on the daily basis together with a maintenance item; and a schedule setting screen that allows a user to set item, day and time of maintenance to be carried out; to thereby control the screen display on the liquid crystal display device.

Description

  The present invention relates to an analyzer such as a water quality analyzer used for measuring pollutant components contained in sewage / river water, factory effluent, and the like, and relates to an analyzer provided with a display device.

  An example of such an analyzer is a water quality analyzer. In addition to the TOC meter that measures only the total organic carbon (TOC) contained in the sample, the water quality analyzer includes a TOC / TN meter that can measure both TOC and nitrogen compounds (total nitrogen: TN) (see Patent Document 1). ), A total nitrogen (TN) / total phosphorus (TP) meter for analyzing both nitrogen compounds and phosphorus compounds (see Patent Document 2), a water quality analyzer capable of measuring TN, TP and organic pollutants (patent) Reference 3).

  Such a water quality analyzer has a function of automatically performing maintenance such as calibration because the measurement is often continued continuously over a long period of time. It is automatically executed by setting the maintenance time and cycle.

JP 2007-24717 A JP 2007-86041 A JP 2001-56332 A

  In the method of setting the maintenance time and cycle, it is difficult for a person who operates the analyzer to know when the maintenance operation is executed.

  Accordingly, an object of the present invention is to display the contents of maintenance in the analysis section and the date and time when the maintenance is performed in an easily understandable manner in a water quality analyzer or other analyzer.

  The analyzer of the present invention includes a sample introduction unit and an analysis unit including at least a detection unit for detecting a component in the sample introduced from the sample introduction unit, a schedule data memory for holding maintenance schedule data in the analysis unit, An apparatus control unit is provided for controlling the analysis unit so that the maintenance operation in the analysis unit is automatically executed according to the schedule held in the schedule data memory.

  In the present invention, in order to display the contents of maintenance and the date and time of maintenance in an easy-to-understand manner, the schedule data memory holds a schedule indicating the contents of maintenance and the date and time of maintenance in the analysis unit as data, and sets the schedule And be updated. In order to display a schedule, the analyzer of the present invention includes a liquid crystal display device with a touch panel and a liquid crystal controller for controlling screen display on the liquid crystal display device. The liquid crystal controller includes a calendar schedule screen for displaying the schedule held in the schedule data memory together with the content of maintenance at least for each date as a screen to be displayed on the liquid crystal display device, and a schedule setting screen for setting the content of maintenance. Is created to control screen display on the liquid crystal display device. The analyzer of the present invention further includes a touch panel controller that recognizes a position where the touch panel is touched by a person, and a schedule control unit that sets a schedule in the schedule data memory based on a signal from the touch panel controller.

  The present invention is not limited to a TOC meter, a TOC / TN meter, a TN / TP meter, a TN, TP, and a water quality analyzer that can measure organic pollutants, and a display that displays measurement conditions and measurement results regardless of the components to be measured. Any analyzer equipped with the apparatus is the subject of the present invention.

  In the present invention, the schedule data memory holds a schedule indicating the contents of maintenance and the date and time when the maintenance is performed, and the maintenance schedule held in the schedule data memory is displayed on the liquid crystal display device as a calendar schedule screen together with the contents of maintenance at least for each date. Since it is displayed, it becomes easy to understand the contents of maintenance and the date and time of maintenance.

  In addition, the liquid crystal display device has a touch panel, and the schedule is set and updated by setting the maintenance contents from the schedule setting screen of the liquid crystal display device and holding it in the schedule data memory. Thus, the degree of freedom of the maintenance schedule is higher than that in which the maintenance time and period are set.

It is a schematic block diagram which shows the TOC / TN meter of one Example. It is a block diagram which shows the part regarding the display apparatus in the Example. It is a figure which shows an example of the calendar schedule screen with the display apparatus in the Example. It is a figure which shows an example of the batch input screen with the display apparatus in the Example. It is a figure which shows an example of the due date designation | designated screen with the display apparatus in the Example. It is a figure which shows an example of the schedule setting screen in the display apparatus in the Example. It is a flowchart which shows the schedule setting operation | movement in the Example. It is a flowchart which shows the maintenance operation | movement in the Example. It is a schematic block diagram which shows the TN / TP meter of another Example.

  As a preferred embodiment, a calendar schedule screen is provided so that the maintenance function can be executed at a fixed time on a fixed day of the week or can be set to be automatically executed at an arbitrary date and time. A schedule for each day of the week and a button for setting at least one type of schedule for each day on the touch panel, and the schedule control unit includes contents of the schedule input for the type of day designated by the buttons on the touch panel; The time can be held in the schedule data memory.

  The maintenance function executed at a fixed day of the week sets the content of maintenance and the execution time in the setting of the day of the week. The maintenance function executed on an arbitrary day sets the content of maintenance and the execution time in the setting of each day. The set maintenance content and execution time are stored in the schedule data memory and displayed on the calendar schedule screen.

  Further, in order to make the contents of maintenance displayed on the calendar schedule screen easier to understand, the calendar schedule screen can display the contents of maintenance set in the schedule data memory with marks.

  In order to facilitate the transition from the calendar schedule screen to the setting screen, the calendar schedule screen includes a button for calling the input assist function for setting a schedule that spans multiple days. It can have a function of setting at least a daily schedule.

  An example of the analysis unit is an analysis unit constituting a water quality analyzer that repeatedly introduces and measures sample water to be measured at different times. Such water quality analyzers include an analyzer that measures at least total organic carbon concentration, an analyzer that measures at least total nitrogen concentration, an analyzer that measures at least total phosphorus concentration, and an analyzer that measures at least ultraviolet absorbance. including. These analyzers include those that measure two or more components with a single device.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a TOC / TN meter according to an embodiment of the analyzer of the present invention. A flow path for discharging a part of the sample to the drain outlet 12 through the branch part 3 in the TOC meter main body 2 is connected to the water sampling pipe 1 through which a sample such as environmental water continuously flows. One port of the 8-port valve 14 of the sample injection mechanism 18 is connected to the branch part 3 of the sample flow path in order to collect a sample for online measurement and guide it to the analysis part.

  The sample injection mechanism 18 includes an 8-port valve 14 and a microsyringe 16 connected thereto, and the microsyringe 16 is connected to a common port of the 8-port valve 14 and is connected to any other port of the 8-port valve 14. It has come to be.

The ports other than the common port of the 8-port valve 14 include the branch part 3 of the sample channel, a channel connected to the acid 20 added to make the sample acidic when measuring the IC, and a calibration standard. A flow path connected to the liquid 22, a flow path connected to the pure water 24 used for dilution and washing, a flow path connected to the sample 26 for off-line measurement, and a TC including a catalyst for converting all the carbon components in the sample into CO _2. A flow path connected to the sample injection section 34 of the oxidation reaction section 32, a flow path connected to the drain outlet 28 for discharging unnecessary gas, and a flow path connected to the drain outlet 12 for discharging unnecessary liquid are respectively connected. Yes.

  A gas purification / flow rate control unit 40 is provided to remove a carbon component from the air taken in from the air inlet 42 to generate a purified gas, and to send out the gas by adjusting the flow rate. The gas outlet of the gas purification / flow rate control unit 40 includes a flow path 41a for supplying the purified gas generated by the gas purification / flow rate control unit 40 to the microsyringe 16 as a sparge gas or a carrier gas, and a TC oxidation reaction unit as a carrier gas. A flow path 41 b that supplies gas to the gas flow path 32 and a flow path 41 c that supplies purified gas to the ozone generator 50 are connected.

The TC oxidation reaction unit 32 introduces the sample and the carrier gas into the TC combustion tube 36 filled with an oxidation catalyst that converts the carbon component in the sample into CO ₂ and converts the nitrogen component into NO, and the TC combustion tube 36. The TC sample injection unit 34 and a heating furnace 38 for heating the TC combustion tube 36 are configured. The downstream portion of the TC combustion pipe 36 is connected to an infrared gas detection unit 46 that detects CO ₂ via a dehumidifier that removes moisture and a dehumidification / gas treatment unit 44 that includes a halogen scrubber that removes halogen components. . The downstream part of the infrared gas detection unit 46 is connected to a chemiluminescence detection unit 48 that detects NO. Ozone is supplied from the ozone generator 50 to the chemiluminescence detector 48. A downstream portion of the chemiluminescence detection unit 48 is connected to a drain outlet 54 via an ozone killer 52.

  The sample injection mechanism 18, the TC oxidation reaction unit 32, the gas purification / flow rate control unit 40, the infrared gas detection unit 46, and the chemiluminescence detection unit 48 constitute an analysis unit.

  The output of the infrared gas detection unit 46 and the output of the chemiluminescence detection unit 48 are input to the calculation unit 56. The calculation unit 56 is connected to a keyboard 60 and a recorder 62. The calculation unit 56 calculates the TOC concentration in the sample based on the detection signal from the infrared gas detection unit 46, and calculates the TN concentration in the sample based on the detection signal from the chemiluminescence detection unit 48.

  The calculation unit 56 is connected to the device control unit 58, and the device control unit 58 controls the operations of the 8-port valve 14 and the microsyringe 16 and the detector sensitivities of the infrared gas detection unit 46 and the chemiluminescence detection unit 48. Then, maintenance such as calibration of detector sensitivity of the infrared gas detection unit 46 and the chemiluminescence detection unit 48 is performed. A keyboard 60 is connected to the device control unit 58 via the calculation unit 56.

  A display device 100 shown in FIG. 2 to be described later is connected to the device controller 58. The display device 100 is also connected to the calculation unit 56 and can display the obtained TOC concentration or the like on the display device 100.

  Next, the measurement operation will be described with reference to FIG.

(TC measurement and TN measurement)
Switching of the 8-port valve 14 and the operation of the microsyringe 16 are performed by a control signal from the device control unit 58. First, the microsyringe 16 is connected to the branch part 3, and a certain amount of sample is collected in the microsyringe 16. When a predetermined dilution rate is set, the microsyringe 16 is connected to the pure water 24 and a predetermined amount of pure water is added to the sample in the microsyringe 16. Next, the sample of the microsyringe 16 is injected into the TC combustion pipe 36 through the TC sample injection port 34 of the TC oxidation reaction unit 32, and the carbon component in the sample is converted into CO ₂ and the nitrogen component is converted into NO. . The CO ₂ and NO generated in the TC combustion pipe 36 are sent to the dehumidification / gas processing unit 44 together with the carrier gas supplied from the gas purification / flow rate control unit 40 via the flow path 41b, and are cooled, dehumidified and halogen-removed. Thereafter, CO ₂ is detected by the infrared gas detection unit 46, and subsequently NO is detected by the chemiluminescence detection unit 48. Those detection signals are sent to the calculation unit 56, the peak value or the peak area is obtained from the signal, and the TC concentration and the TN concentration are obtained based on the calibration curve data. The obtained TC concentration and TN concentration are sent to the display device 100 together with data such as sample injection amount, dilution rate, measurement date and time.

(IC measurement and TOC measurement)
A certain amount of sample is collected in the microsyringe 16 in the same manner as in TC measurement and TN measurement. When a predetermined dilution rate is set, the microsyringe 16 is connected to the pure water 24 and a predetermined amount of pure water is added to the sample in the microsyringe 16. Next, the microsyringe 16 is connected to the acid 20 and a small amount of acid is added to the sample in the microsyringe 16. Next, the microsyringe 16 is connected to the TC sample inlet 34, and the sparge gas is supplied from the gas purification / flow rate control unit 40 to the microsyringe 16 through the flow path 41 a. CO ₂ generated from the IC in the sample is sent to the dehumidification / gas processing unit 44 together with the sparge gas, cooled, dehumidified, and halogen-removed, and then the infrared gas detection unit 46 detects CO ₂ . The detection signal is sent to the calculation unit 56, and the IC concentration is obtained from the signal. The calculation unit 56 obtains the TOC concentration from the difference between the TC concentration and the IC concentration.

The TOC concentration can also be measured alone. A certain amount of sample is collected in the microsyringe 16 in the same manner as in TC measurement and TN measurement. When a predetermined dilution rate is set, the microsyringe 16 is connected to the pure water 24 and a predetermined amount of pure water is added to the sample in the microsyringe 16. Next, the microsyringe 16 is connected to the acid 20 and a small amount of acid is added to the sample in the microsyringe 16. Next, the microsyringe 16 is connected to the drain outlet 28, and the sparge gas is supplied to the microsyringe 16 from the gas purification / flow rate control unit 40 through the flow path 41 a. CO ₂ generated from the IC in the sample is discharged from the drain outlet 28 together with the sparge gas, and the TOC remains in the microsyringe 16. Thereafter, samples of the microsyringe 16 is injected into the TC combustion tube 36 via the TC sample injection port 34 of the TC oxidative reaction part 32, the carbon component in the sample is converted to CO _2, CO ₂ generated by the TC combustion tube 36 Is sent to the infrared gas detection unit 46 through the dehumidification / gas processing unit 44 together with the carrier gas, and TOC is detected as CO ₂ .

  The display device 100 and the device control unit 58 are configured as shown in FIG. 2 as an example. A liquid crystal display device (LCD) 102 with a touch panel is provided as a display element. In order to control screen display on the LCD 102, a liquid crystal controller (LCD controller) 104 is connected to the LCD 102. The LCD controller 104 creates a plurality of screens to be displayed on the LCD 102. These screens include a calendar schedule screen (for example, one illustrated in FIG. 3) for displaying the schedule held in the schedule data memory 124 together with the contents of maintenance at least for each date, and a batch input selection screen (for example, FIG. 4). ), A schedule setting screen (for example, illustrated in FIG. 5) for setting the contents of maintenance, and a date designation screen (for example, illustrated in FIG. 6) are included.

  A touch panel controller 108 is connected to the LCD 102 in order to recognize a position touched by a person on the touch panel of the LCD 102.

  In order to switch the display screen of the LCD 102 based on the signal from the touch panel controller 108 and to store the schedule data in the schedule data memory 124 based on the signal from the touch panel controller 108, the LCD controller 104 and the touch panel controller 108 have a schedule. The control unit 110 is connected, and the schedule control unit 110 is connected to the apparatus control unit 58.

  The schedule control unit 110 includes an input unit 112 and a screen control unit 114. The input unit 112 inputs position information recognized by the touch panel controller 108 when a person touches the touch panel, and sends it to the screen control unit 114.

  When the schedule is set, the screen control unit 114 selects the type of day (collective input, day of the week, or day) at the position of the button arranged at the position from the position information sent from the input unit 112 for the calendar schedule screen of FIG. Recognize each day).

  When the day of the week or each day button is pressed, the screen is switched to the schedule setting screen of FIG.

  When the “collective input” button is pressed, the screen is switched to the collective input selection screen of FIG. 4 and the input assist function is activated.

  When the “daily” button is pressed on the collective input selection screen of FIG. 4, the screen is switched to the schedule setting screen of FIG.

When the “period specification (day)” button is pressed on the collective input selection screen of FIG. 4, the screen is switched to the period specification screen of FIG. When the “period specification (day of the week)” button is pressed on the collective input selection screen in FIG. 4, the illustration is omitted, but “start day” is an alternative to the “start date” and “last day” in FIG. 5. And “Last day of the week” are displayed. After the period is designated on the period designation screen, when the “next” button is pressed, the schedule setting screen shown in FIG. 6 is switched.
In the schedule setting screen of FIG. 6, whether or not the maintenance function is executed and the execution time of the maintenance function to be executed (the execution time is switched to the execution time setting screen (not shown) when the execution button of the maintenance function is pressed). When the time is input, the data is stored in the schedule data memory 124 as schedule data. At this time, when the setting of the day of the week is changed, the contents are copied to the data of each day and stored in the schedule data memory 124. The daily settings made by the input assist function are copied to the day of the week and the data of each day and stored in the schedule data memory 124. The data for each day can be held, for example, for up to three months.

  When the calendar schedule screen is displayed, the screen control unit 114 supplies the schedule data to the LCD controller 104 so that the calendar schedule screen based on the latest schedule data stored in the schedule data memory 124 is displayed. To do.

  In addition to the schedule data memory 124, the apparatus control unit 58 controls the operation of the analysis unit to perform the maintenance operation of the embodiment in addition to the analysis operation, and the schedule data stored in the schedule data memory 124 Is provided with a time management unit 122 that causes the operation control unit 120 to start a maintenance operation. When the operation control unit 120 receives a signal instructing the start of online measurement from the screen control unit 114, the operation control unit 120 notifies the time management unit 122 that the online measurement operation has started. When the time management unit 122 receives a signal notifying the start of the online measurement operation, the time management unit 122 reads out data for each day from the schedule data memory 124 and creates a schedule for causing the operation control unit 120 to perform a maintenance operation. The time management unit 122 includes a timer, and notifies the operation control unit 120 at a timing determined by the schedule, and the operation control unit 120 performs a maintenance operation of the notified content.

  In this embodiment, the schedule data memory 124 is realized by a storage device in the device control unit 58. However, the present invention is not limited to such an embodiment, and the schedule data memory 124 may be provided in another part, for example, the calculation unit 56, the schedule control unit 110, the LCD controller 104, or the like. You may provide as a memory | storage device independent from the part. Similarly, the time management unit 122 may be provided as a part other than the apparatus control unit 58 or as an independent part.

  When the week is updated, the time management unit 122 deletes the data for one week, and updates the schedule data memory 124 by setting the day of the week as a schedule for a new week.

  Examples of the display screen of the LCD 102 are shown in FIGS.

  FIG. 3 is a calendar schedule screen that displays the schedule held in the schedule data memory 124 together with the contents of maintenance at least for each date, and is arranged on the touch panel of the LCD 102. The button “collective input” is a button for calling an input auxiliary function for setting a calendar. The day of the week from “Sun” to “Saturday” is a schedule for executing the maintenance function on each day of the week, and the contents of the maintenance to be executed are symbols such as △, □, ○, × Is displayed. What is displayed as a date is a schedule for executing the maintenance function on each displayed day, and the contents of the maintenance to be executed are also displayed by symbols such as Δ, □, ○, and X.

  The calendar schedule screen may be displayed whenever the analyzer is powered on. A display button or switch is provided on the touch panel of the LCD 102 or other part, and the button or switch is pressed. You may make it display only when it is done. The calendar schedule screen displays a maintenance execution schedule held in the schedule data memory 124, and is also used when a maintenance schedule is newly set or changed in the schedule data memory 124. is there.

  The batch input selection screen in FIG. 4 is an input auxiliary function screen displayed when the “collective input” button on the calendar schedule screen in FIG. 3 is pressed. As the item, “every day” or “period specification” can be specified. For example, when “daily” is designated, the screen of FIG. 6 is displayed. When the maintenance function and execution time are specified and the “execute” button is pressed, the setting is reflected in the setting of the day of the week and the setting of each day. When the “Specify period” button is pressed, the screen of FIG. 5 for setting the period by day or the screen for specifying the period by the day of the week similar to that is displayed. When the “Next” button is pressed on those screens, FIG. Is displayed.

  The period designation screen in FIG. 5 is a screen that is displayed when the “period designation (day)” button is pressed on the collective input screen in FIG. 4.

  FIG. 6 is a schedule setting screen for setting the contents of maintenance. On the schedule setting screen, maintenance functions 1 to 4 are shown together with respective symbols (◯, Δ, × or □), and whether or not to execute each maintenance function on the touch panel is selected. When the execution button is pressed, the execution time of the maintenance function can be input from another screen, and when the time is input, it is displayed at the execution time position on the schedule setting screen.

  When set on the schedule setting screen, the touch panel controller 108 recognizes that the maintenance function is executed, and the maintenance function is set to the designated day, day of the week or period of the schedule data memory 124 via the schedule control unit 110. Saved as a maintenance schedule.

  The schedule setting operation will be described with reference to the flowchart of FIG.

  When the apparatus is turned on, a calendar schedule screen 130 (FIG. 3) is displayed on the LCD 102. The calendar schedule screen 130 may be displayed during the measurement operation.

  When the user touches any of the day setting buttons 132, 134, and 136 on the calendar schedule screen 130 displayed on the LCD 102, the touch panel controller 108 reads the touch panel signal and notifies the input unit 112. The setting buttons 132, 134, and 136 are not particularly limited, but in this embodiment, a “batch input” button 132 that activates a batch input auxiliary function, a day button 134 that sets a day of the week, and each day setting Each day button 136 for performing.

  The input unit 112 acquires information on the touched position from the information on the touch panel controller 108 and notifies the screen control unit 114 of the information. The screen control unit 114 determines which day button has been pressed from the notified position information, and displays the batch input selection screen (FIG. 4) or the schedule setting screen 138 (FIG. 6) corresponding to the date on the LCD controller 104. It controls and displays on LCD102. From the batch input selection screen (FIG. 4), a schedule setting screen 138 (FIG. 6) is displayed through a period designation screen (FIG. 5 and the like).

  When the user touches one or more maintenance function execution / non-execution buttons on the schedule setting screen 138, the touch panel controller 108 reads the touch panel signal and notifies the input unit 112 of the touch panel controller 108 as described above. The information on the touched position is acquired from the information and the screen control unit 114 is notified. When a signal from the screen control unit 114 is sent to the LCD controller 104, a screen for inputting an execution time is displayed. When the execution time is input on the screen, the screen control unit 114 stores the designated maintenance function and execution time in the schedule data memory 124 as schedule data via the touch panel controller 108. At this time, when the maintenance function for the day of the week is newly set or changed, the contents are copied to the data for each day and stored in the schedule data memory 124. In the embodiment, the data for each day is retained for up to three months.

  The operation during the measurement operation will be described with reference to the flowchart of FIG.

  (A) When online measurement is started, an instruction to start online measurement is sent from the screen control unit 114 to the operation control unit 120, and the operation control unit 120 notifies the time management unit 122 that the online measurement operation has started. To do. When notified of the start of the online measurement operation, the time management unit 122 reads the data for each day from the schedule data memory 124 and creates a schedule.

  (B) The time management unit 122 notifies the operation control unit 120 of a maintenance function to be executed at the maintenance execution timing indicated in the schedule.

  (C) The operation control unit 120 performs a maintenance operation of the notified content.

  (D) When the week is updated, the time management unit 122 deletes the data for one week, and updates the schedule data memory by setting the day of the week as a new one week schedule.

  The operations (b) to (d) are repeatedly executed during the measurement operation.

  FIG. 9 is a schematic configuration diagram of a TN / TP meter according to another embodiment of the analyzer of the present invention.

  The reagent supply mechanism 202 that also serves as the sample water supply mechanism measures and collects a certain amount of sample water and reagent, supplies them to the reactor 204 that is an oxidation reaction unit, and absorbs the sample oxidized in the reactor 204 by an absorbance measurement unit. It is for leading to the measuring cell 206a of 206. The absorbance measuring unit 206 measures the absorbance of the oxidized sample water.

  The reactor 204 irradiates the aqueous sample to which the potassium peroxodisulfate solution 232 is added with ultraviolet rays or heats it to cause an oxidation reaction, thereby converting the nitrogen compound and the phosphorus compound in the sample water to nitrate ions and phosphate ions, respectively. Oxidative decomposition.

  The reagent supply mechanism 202 includes 8-port valves 208 and 210 having a common port and a plurality of distribution ports, and a syringe pump 212 connected to the common port of the 8-port valve 208. The common port is connected to one distribution port of the 8-port valve 208 via the communication pipe 214.

  Added to each distribution port of the 8-port valve 208 to supply a reagent, a channel connected to sodium hydroxide (NaOH) 231, a channel connected to potassium peroxodisulfate solution 232, and a pH value to be adjusted A flow path connected to hydrochloric acid 233, a flow path connected to sulfuric acid 234, a flow path connected to ammonium molybdate solution 235, and a flow path connected to L-ascorbic acid solution 236 are connected, respectively, and the remaining one distribution port is a gas inlet / It is open to the atmosphere as a discharge channel.

  In each distribution port of the 8-port valve 210, an online sample flow path for collecting a sample online from a plant, an offline sample flow path for collecting a sample from a sample container, and a calibration liquid 237 are provided. , A channel connected to the reaction unit 204, a channel connected to the dilution water 238, and a channel connected to the measurement cell 206a of the absorbance measurement unit 206 are connected, and the remaining ports are drain ports.

  The 8-port valves 208 and 210 are driven by a pulse motor (not shown) whose operation is controlled by the control unit 224, so that any one of the respective distribution ports is connected to a common port of each 8-port valve. The

  The control unit 224 inputs the output of the absorbance measurement unit 206 and calculates the TN concentration and the TP concentration. The control unit 224 controls the operations of the 8-port valves 208 and 210 and the syringe pump 212. In addition to the display device 225, a recorder or the like (not shown) is connected to the control unit 224.

  The control unit 224 includes an operation control unit and a calculation unit according to the present invention, and corresponds to a unit including the operation control unit 28 and the calculation unit 56 in the embodiment of FIG. The control unit 224 may be a dedicated computer for the TN / TP meter, or may be realized by connecting a general-purpose personal computer.

  In this TN / TP meter, during the measurement of total nitrogen, all nitrogen compounds such as nitrate ion, nitrite ion, ammonium ion or organic nitrogen present in the sample water are alkaline peroxo which is an oxidizing agent as a reagent in the sample water. Potassium disulfate solution is added and converted to nitrate ions in the reactor 204 by UV irradiation or by heating at 120 ° C. for 30 minutes. The sample oxidized in the reactor 204 has its pH adjusted to 2 to 3, and the nitrate ion concentration is measured by ultraviolet absorbance at a wavelength of 220 nm in the measurement cell 206a of the absorbance measurement unit 206.

  In this TN / TP meter, when measuring all phosphorus, all phosphorus compounds are changed to phosphate ions. Therefore, in order to change hydrolyzable phosphorus and organic phosphorus other than phosphate ions present in the sample water into phosphate ions, a potassium peroxodisulfate solution as an oxidizing agent is added as a reagent in a neutral state, and the reactor 204 In this case, it is converted into phosphate ions by irradiation with ultraviolet rays or by heating at 120 ° C. for 30 minutes. Since phosphate ions do not have specific light absorption, an ammonium molybdate solution and an L-ascorbic acid solution, which are color formers, are added as reagents to the sample solution after cooling to cause color development, and the measurement cell of the absorbance measurement unit 206 At 206a, the phosphate ion concentration is measured by the absorbance at a wavelength of 880 nm.

  In this TN / TP meter, the organic pollutant concentration in the sample water can also be measured. At the time of measuring organic pollutants, the sample water is guided to the measurement cell 206a of the absorbance measurement unit 206 without passing through the reactor 204. That is, the sample water is not subjected to oxidation treatment, and the organic pollutant concentration is measured by the absorbance at a predetermined wavelength, for example, around 220 nm in the measurement cell 206a.

  Also in this TN / TP meter, the display device 225 has the same configuration as the display device 100 shown in FIGS. 2 and 3, and the contents of the displayed screen are the same as those shown in FIGS. Changed for TN / TP meter.

18 Sample injection mechanism 32 TC oxidation reaction unit 40 Gas purification / flow rate control unit 46 Infrared gas detection unit 48 Chemiluminescence detection unit 56 Calculation unit 58 Device control unit 100 Display device 102 LCD
104 LCD controller 110 Schedule control unit 112 Input unit 114 Screen control unit 120 Operation control unit 122 Time management unit 12 Schedule data memory

Claims (5)

An analysis unit including at least a sample introduction unit and a detection unit for detecting a component in the sample introduced from the sample introduction unit;
A schedule data memory for holding schedule data indicating the content of maintenance and the date and time for maintenance in the analysis unit, and for setting and updating the schedule,
An apparatus control unit for controlling the analysis unit so as to automatically perform a maintenance operation in the analysis unit according to a schedule held in the schedule data memory;
A liquid crystal display device with a touch panel;
As a screen to be displayed on the liquid crystal display device, at least a calendar schedule screen for displaying the schedule held in the schedule data memory together with the content of maintenance for each date and a schedule setting screen for setting the content of maintenance are created at least A liquid crystal controller for controlling screen display on the liquid crystal display device;
A touch panel controller for recognizing a position where the touch panel is touched by a person;
A schedule control unit configured to set a schedule in the schedule data memory based on a signal from the touch panel controller;
Analytical device equipped with. The calendar schedule screen includes a button for setting at least one of a schedule for each day of the week and a schedule for each day on the touch panel,
The analyzer according to claim 1, wherein the schedule control unit causes the schedule data memory to hold the contents and time of the schedule input for the type of day designated by the button on the touch panel.   The analyzer according to claim 1, wherein the calendar schedule screen displays the contents of maintenance set in the schedule data memory with marks.   4. The calendar schedule screen includes a button for calling an input assist function for setting a schedule extending over a plurality of days, and the input assist function has a function for setting at least a daily schedule. The analyzer according to claim 1.   The analyzer according to any one of claims 1 to 4, wherein the analysis unit constitutes a water quality analyzer that repeatedly introduces and measures sample water to be measured at different times.