JPH11148926A - Water quality-measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate an artificial manipulation and log only water quality measurement data alone, by making a data logger log measured data only when a water quality-measuring apparatus sinks in water. SOLUTION: A sensor main body 1 which has measuring tips 6A-6T connected to be exposed to water while sinking in water incorporates an electrode 2, an operation part 3 including a memory 3a, and a data logger 4 recording measured data in time sequence in a water-tight case 5. The sensor main body 1 is sunk in water by manipulating a communciation cable 18, whereby not only a conductivity and a water quality (salt concentration, pH, turbidity, dissolved oxygen, water temperature) operated on the basis of the conductivity, but various ions, etc., except pH can be measured highly accurately. In this case, a switch S is set in a signal circuit to the data logger 4, so that the data logger 4 is let to log data only when a water quality-measuring apparatus in sunk in water. An artificial manipulation to the data logger 4 is eliminated, and only water quality measured data without including measured data in the atmosphere can be logged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality measuring device suitable for use in surveying water quality of rivers, lakes, marshes, seas, etc., and managing water quality in aquaculture or hydroponics.

[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 each of these measurements with a dedicated measuring device is not only costly, but also complicates the work. Therefore, the present applicant has already made the basic indices of water quality such as conductivity. , A salt concentration calculated based on this conductivity,
A water quality measurement device capable of simultaneously measuring a total of six items of pH, turbidity, dissolved oxygen, and water temperature and storing the measured values has been proposed.

In this case, in order to measure the water quality at a predetermined water depth, a scale is provided on the suspension holding cable of the water quality measuring device, or a measure having a weight for settling is prepared, and the water depth is visually checked. When measuring various ions other than pH and oxidation-reduction potential, prepare a dedicated device, and when measuring the density, prepare a densitometer and perform each measurement. The six items of data called from the memory means are associated with each other in chronological order, and this data is artificially logged.

[0005]

However, in parallel with the measurement of the six items by the above-described water quality measuring device, the water depth at the time of the measurement, various ions other than pH, and the oxidation-reduction potential are separately measured. It is very troublesome to log the above data and the data of the above six items in a time-series manner, and there is a concern that reading or recording errors of the data may occur when logging the data.

Therefore, in recent years, in addition to the above six measurements, a water quality measuring device has been developed that can measure various ions other than the oxidation-reduction potential and pH, the depth of the water, and the density with a single device. At this time, by storing the measurement data, the trouble of relating various data in a time-series manner can be eliminated, but there is still a concern that data reading and recording errors may occur when logging data.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a water quality measuring apparatus which has solved the above-mentioned disadvantages, and the technical means adopted by the present invention are as follows.

That is, in the water quality measuring device according to the first invention,
Power supply, water quality measurement means including the measurement of conductivity, memory means of water quality measurement data, comprising a data logger that records the water quality measurement data in time series, and, when the conductivity measurement unit submerged, It is characterized in that the data logger is configured to log measurement data.

In the water quality measuring apparatus according to the second invention, a power supply, water quality measuring means including conductivity measurement, a memory means for water quality measuring data, and a data logger for recording the water quality measuring data in time series are provided with a water quality measuring device. The measuring part of the means is built in a watertight case so as to be exposed to water, and the watertight case and a display device for displaying water quality measurement data are connected by a communication cable that suspends and holds the watertight case, It is characterized in that the data logger is configured to log the measurement data when the measurement unit is submerged.

In each of the water quality measuring devices of the first and second aspects of the invention, various types of water quality measurement data are stored, and the water quality measurement data is automatically stored on the basis of the detection result that the conductivity measuring section is submerged. Data logging, so there is no need for any troublesome operations that may lead to data reading or recording errors.Water quality measurement data can be obtained without any data logging in the atmosphere, which is completely unnecessary for water quality measurement. Only logging can be done.

Therefore, if necessary, not only can various kinds of water quality measurement data and water depth measurement data at the time of water quality measurement be called up in an accurately related state, but also the information of the data logger can be input to the printer. The measurement data can be printed.

In addition, in the case of the second invention, since the water quality measurement data is displayed on the display device, the water quality measurement data can be confirmed in real time.

[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 arithmetic unit 3 having a memory means 3a.
And a data logger 4 for recording the calculated measurement data in a time-series manner are built 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 thermometer 7 integrally therewith.

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:
According to the present invention, the connector is detachably connected to the connector portion of the sensor body 1 with compatibility through a 4-pole type connector 8C in which two poles for chip identification are added to two poles for signal circuit. Each of the measurement chips 6A to 6T, which is a water quality measurement means described above, is connected to the sensor main body 1 so that the water quality measurement unit is exposed to 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 structure, the sensor body 1 is submerged by operating the communication cable 18.
Conductivity, salt concentration calculated based on this conductivity, pH, turbidity, dissolved oxygen, and water temperature in addition to water quality measurement of a total of six items, and various ions other than pH and redox The measurement of the potential, the water depth and the density can be performed with high accuracy.

Since the water quality measurement data is displayed on the display 10, the water quality measurement data can be confirmed in real time, and the various water quality measurement data and the water depth measurement data at the time of the water quality measurement can be accurately related. Then, the data is stored in the memory means 3a and the data logger 4
So that various types of water quality measurement data and the water depth measurement data at the time of the water quality measurement can be called up in an accurate relationship as needed, and the data logger information can be input to the printer. Then, the measurement data can be printed.

Here, the operation of starting and ending the logging of the data logger 4 may be performed manually.
This operation is not only troublesome, but if the operation is forgotten or mistakenly performed, the required water quality measurement data is not logged, or the measurement data in the atmosphere that is completely unnecessary for water quality measurement is logged. .

Therefore, in the present invention, the data logger 4 performs data logging only when the water quality measuring device is submerged, that is, the conductivity measuring chip 6.
The data logger 4 is configured such that the measurement data is input to the data logger 4 based on the output when the measurement unit B is submerged.
The switch S is provided in the signal circuit to the data logger 4 so that the data logger 4 terminates the data logging when the conductivity measuring chip 6B is raised above the water surface.

As described above, the start and end of logging by the data logger 4 are related to the submersion and lifting of the conductivity measuring chip 6B, thereby eliminating any need for complicated operation on the data logger 4. Moreover,
It is possible to cause the data logger 4 to log only the water quality measurement data without any logging of measurement data in the atmosphere that is not necessary for the water quality measurement.

If it is not necessary to display the water quality measurement data in real time, the display device 9 is omitted, and the expensive waterproof type cable 18 is used instead.
Use this as a hanging holder such as a wire or chain,
After the necessary water quality measurement, the user can bring back the water quality measurement device, call up the measurement data stored in the memory means, input the information of the data logger to the printer, and print out the logged measurement data.

[0026]

As described above, in each of the water quality measuring devices according to the first and second aspects of the present invention, the various types of water quality measurement data and the depth measurement data at the time of measuring the water quality are accurately associated with each other in the memory. Printing can be performed by calling from a means or inputting information of a data logger to a printer. In particular, in the water quality measuring device of the second invention, the measured data can be visually confirmed in real time.

Also, logging of the data logger is started based on the water immersion of the conductivity measuring unit, and the logging is terminated based on the lifting of the conductivity measuring unit above the water surface. Can be made unnecessary, and only the water quality measurement data can be logged without involving any data logging in the atmosphere which is absolutely unnecessary for water quality measurement.

[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.

[Explanation of symbols]

2 ... power supply, 3a ... memory means, 4 ... data logger, 6
A to 6T: Water quality measurement means (measurement chip), 10: Display device, 18: Communication cable (hanging holder).

Claims (2)

[Claims] 1. A power supply, a water quality measuring means including conductivity measurement, a memory means for water quality measurement data, and a data logger for recording water quality measurement data in time series, and wherein the conductivity measuring unit is A water quality measurement device, wherein a data logger is configured to log measurement data when submerged. 2. A power supply, water quality measurement means including conductivity measurement, a memory means for water quality measurement data, and a data logger for recording the water quality measurement data in time series, wherein the measurement unit of the water quality measurement means stores the water in the water. When the conductivity measuring unit is submerged while being built in the watertight case so as to be exposed, and this watertight case and a display device for displaying water quality measurement data are connected by a communication cable that suspends and holds the watertight case. And a data logger configured to log measurement data.