KR20230070616A - Measuring instrument for water quality - Google Patents

Abstract

According to the present invention, not only can water quality measurement of various inspection items be mechanically measured using various types of sensors, but also water quality measurement using a water quality test strap can be easily performed, thereby simplifying the water quality measurement process. However, it relates to a groundwater quality measuring device that enables a more objective water quality measurement test to be derived.

Description

Groundwater water quality meter {Measuring instrument for water quality}

The present invention relates to a groundwater quality measuring device, and more particularly, to a groundwater quality measuring device capable of measuring various water quality factors such as pH, electrical conductivity, and temperature of a sample.

Water pollution caused by urban sewage, industrial wastewater, etc. in modern society not only destroys the ecosystem, but also causes depletion of water resources necessary for industrial and agricultural water and drinking water, emerging as a serious social problem. For example, groundwater is still maintained in a clean state, but depletion and contamination are accelerating due to indiscriminate development.

Recently, as awareness of the importance of managing and using water resources has increased, various management systems for preventing pollution and efficient use of water resources have been developed and applied. It is managed so that it can be used for various purposes.

As the most basic management method for water quality, regular water quality inspection is performed. In general, portable water quality measuring devices that groundwater management workers can easily carry and use are widely available. Characteristics such as salinity, acidity (pH), electrical conductivity (EC), and total dissolved solids (TDS) can be measured.

Most water quality measurement devices are equipped with sensors that can measure each characteristic item to measure water quality. The possibility of an error in the result due to the yaw operation of the sensor could not be excluded, and therefore, an additional water quality test result using a water quality measuring strap is required separately from the measurement using the water quality measuring device.

However, most of the conventional water quality measurement devices have a long pen shape so that they can be immersed into the sample, so it is cumbersome to use the water quality test strap at the same time as the water quality measurement device. Therefore, the water quality measurement device is used on the sample. Since it was necessary to re-measure using a water quality measuring strap immediately after the water quality measurement, a predetermined term occurred, and there was a problem of contamination of the sample.

Patent Publication 10-2017-0114137

The present invention was created to solve the above problems in view of the prior art, and can mechanically measure water quality of various inspection items using various types of sensors, and at the same time, using a water quality inspection strap. It is an object of the present invention to provide a groundwater quality measuring device that can easily perform water quality measurement, so that a water quality measurement process is simple and a more objective water quality measurement test can be derived.

The present invention is a means for achieving the above object, which is made in the form of a housing so that a sample is accommodated therein, and a housing having an open upper part and a display formed on an outer surface; a mounting portion detachably coupled to the inside of the housing and formed in the form of a box made of a mesh material; a measurement unit coupled to the holding unit and generating water quality information by measuring the quality of the sample accommodated in the housing; a control unit that processes the water quality information generated by the measuring unit as a measured value and outputs it to a display; and a support part slidably mounted on the holding part while supporting the water quality test strap.

In addition, the measuring unit may include at least one of a pH measuring sensor, a dissolved oxygen measuring sensor, a conductivity measuring sensor, and a temperature measuring sensor.

In addition, the mounting portion, a cylindrical member made of a cylindrical housing form of a mesh material; a circular rail member formed in a circular shape along an upper circumference of the cylindrical member and guiding the support portion in a circumferential direction; and a vertical rail member extending downward from the circular rail member along the inner surface of the cylindrical member and guiding the support portion in the vertical direction.

'자 구조를 이루어 하우징의 상단 둘레에 안착 가능하게 구성되며, 상기 수평판의 상면에는 원주방향을 따라 컬러대조표가 형성되며, 상기 지지부는, 상기 원형레일부재와 수직레일부재에 접속되는 제1 가이드돌기가 형성되는 지지블럭; 상기 지지블럭의 상부에 회동 가능하게 결합되는 지지판; 상기 지지블럭의 상부에 고정 결합되며 지지판과 마주하여 수질검사용 스트랩을 고정하는 망사 구조의 보호망; 상기 지지블럭의 외측으로 결합되며 하우징에 수용된 검체에 와류를 형성하는 와류팬; 및 상기 지지판의 길이방향을 따라 왕복으로 슬라이딩 가능하게 결합되며 지지판 주변의 수분을 흡수하는 흡수부재;를 포함하며, 상기 지지판의 측면에는 길이방향을 따라 가이드레일이 함몰 형성되며, 상기 흡수부재는, 관형으로 이루어지며 상기 지지판 외측을 감싸는 구조로 결합되며 내측면에 상기 가이드레일에 접속되는 제2 가이드돌기가 형성되는 이동체; 상기 이동체의 내측에 결합되되 상기 지지판의 일측면에 대면하여 지지판 일측면의 수분을 흡수하는 제1 흡수체; 상기 이동체의 내측에 결합되되 상기 지지판의 타측면에 대면하여 지지판의 타측면의 수분을 흡수하는 제2 흡수체; 및 상기 이동체를 관통해 결합되어 지지판에 선택적으로 압착 고정되는 압착핀;을 포함하며, 상기 이동체에는 상기 압착핀이 관통되는 관통구가 형성되고, 상기 관통구의 내측에 제1 지지턱이 돌출 형성되며, 상기 압착핀의 외주면에는 제2 지지턱이 돌출 형성되며, 상기 제1 지지턱과 제2 지지턱 사이에 탄성스프링이 설치되어 압착핀을 지지판 방향으로 탄성 가압하며, 상기 지지블럭의 제1 가이드돌기가 원형레일부재에 접속되는 높이까지 상승하면 상기 지지판은 외측으로 회동되어 수평판으로 안착되며 이 상태에서 지지부를 원형레일부재의 원주방향을 따라 회동시켜가며 검체에 반응한 수질검사용 스트랩의 색상을 컬러대조표에 대조하는 것을 특징으로 한다.In addition, a horizontal plate is vertically bent and extended outward at the upper end of the circular rail member, and a vertical plate is vertically bent and extended downward from the circumference of the horizontal plate, so that the circular rail member, the horizontal plate and the vertical plate are interconnected. Became '

It is configured to be able to be seated on the upper end of the housing by forming a 'character structure, and a color comparison table is formed along the circumferential direction on the upper surface of the horizontal plate, and the support part is a first guide connected to the circular rail member and the vertical rail member. a support block on which protrusions are formed; a support plate rotatably coupled to an upper portion of the support block; A protective net having a mesh structure fixedly coupled to an upper portion of the support block and facing the support plate to fix a water quality test strap; a vortex fan coupled to the outside of the support block and forming a vortex in the specimen accommodated in the housing; and an absorbing member that is slidably coupled in a reciprocating manner along the longitudinal direction of the supporting plate and absorbs moisture around the supporting plate, wherein a side surface of the supporting plate is formed with a guide rail recessed along the longitudinal direction, and the absorbing member, a moving body having a tubular shape, coupled to a structure surrounding the outside of the support plate, and having a second guide protrusion connected to the guide rail on an inner surface thereof; A first absorber coupled to the inside of the moving body and facing one side of the support plate to absorb moisture on one side of the support plate; a second absorber coupled to the inside of the moving body and facing the other side of the support plate to absorb moisture from the other side of the support plate; and a compression pin coupled through the movable body and selectively pressed and fixed to a support plate, wherein a through-hole through which the compression pin passes is formed in the movable body, and a first support protrusion protrudes from the inside of the through-hole, , A second supporting jaw protrudes from the outer circumferential surface of the compression pin, and an elastic spring is installed between the first supporting jaw and the second supporting jaw to elastically press the compression pin in the direction of the supporting plate, and the first guide of the supporting block When the protrusion rises to the height connected to the circular rail member, the support plate is rotated outward and is seated as a horizontal plate. It is characterized by contrasting the color comparison table.

In addition, a first connector electrically connected to the battery is formed on the top of the housing, a second connector connected to the first connector is formed on the lower surface of the horizontal plate, and the lead wire of the measuring unit is connected to the second connector. It is characterized in that it receives power from a battery.

The water quality measuring instrument according to the present invention can not only mechanically measure water quality of various inspection items using various types of sensors, but also easily perform water quality measurement using a water quality inspection strap, so that water quality While the measurement process is simple, it provides an effect that allows a more objective water quality measurement test to be derived.

1 is a block diagram showing the main configuration of the present invention.
2 is a view showing the overall appearance of the groundwater quality measuring device according to the present invention.
3 is a view showing an exploded configuration of the groundwater quality measuring device according to the present invention.
4 is an enlarged view of an exploded configuration of a support unit;
5 is a view showing the overall cross-sectional configuration of the groundwater quality measuring device according to the present invention.
6 is a view showing a state in which the support has moved upward;
7 is a view showing a state in which the support plate is rotated outward;
8 is a view showing an example in which the support part moves in the circumferential direction;
9 is a view showing a cross-sectional configuration based on line AA shown in FIG. 5;
10 is a view showing the action of the absorbent member.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the examples described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same members are sometimes indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are omitted.

The groundwater quality measuring device (hereinafter, referred to as a water quality measuring device) according to the present invention includes a housing 10, a mounting part 20, a measuring part 30, a control part 40, and It can be defined as including the support part 50 .

First, the housing 10 is formed in the form of a box so that the specimen is accommodated therein, and the upper part is formed open, and the display 11 may be formed on the outer surface.

A handle 12 may be formed on the outside of the housing 10, and the display 11 may be configured to display the measurement value of the specimen measured by the measurement unit 30 to be described later.

Although not shown, a battery, a controller 40, and the like may be embedded in a suitable location of the housing 10.

A sample, for example, water, which is a measurement target, may be accommodated in the housing 10 . The holding part 20, the measuring part 30, the support part 50, etc. may be immersed together toward the specimen accommodated in the housing 10.

Next, the mounting portion 20 is detachably coupled to the inside of the housing 10 and is formed in the form of a box made of a mesh material.

The holding unit 20 may be immersed in the specimen accommodated in the housing 10 while supporting the measuring unit 30 to be described later.

More specifically, the mounting portion 20 is formed in a circular shape along the upper circumference of the cylindrical member 21, the upper end of the cylindrical member 21, the cylindrical member 21 made of a mesh material, and guides the support portion 50 in the circumferential direction A circular rail member 22 and a vertical rail member 23 extending downward from the circular rail member 22 along the inner surface of the cylindrical member 21 and guiding the support portion 50 in the vertical direction can be exemplified.

The cylindrical member 21 is configured to be offset from the inner surface of the housing 10 by a predetermined distance toward the inside, and is provided at a predetermined distance while not in direct contact with the inner surface of the housing 10 .

Accordingly, when the cylindrical member 21 of the holder 20 is inserted onto the sample accommodated in the housing 10, particulate foreign substances of a relatively large particle size suspended in the sample are separated between the housing 10 and the cylindrical member 21. be able to hang

Therefore, when the water quality test strap (S) supported by the measurement unit 30 or the support unit 50 is immersed in the sample, the particulate foreign matter is directly different from the surface of the measurement unit 30 and the water quality test strap (S). Adhesion or sticking can be prevented from lowering the measurement accuracy.

For the water quality test strap S, for example, litmus reaction paper may be used.

The circular rail member 22 constitutes the upper end of the holding portion 20 and can guide the support portion 50 in the circumferential direction, and the vertical rail member 23 extends downward from the circular rail member 22 to form a circular shape. It is connected to the rail member 22 to form one single channel.

That is, the support part 50 may be guided in at least one of the circular rail member 22 and the vertical rail member 23 .

'자 고리구조를 이루어 하우징(10)의 상단 둘레에 안착 가능하게 구성된다.At the upper end of the circular rail member 22, a horizontal plate 24 is vertically bent and extended outward, and a vertical plate 25 is vertically bent and extended downward around the horizontal plate 24, forming the circular rail member 22. The rail member 22, the horizontal plate 24 and the vertical plate 25 are interconnected '

It is configured to be seated around the upper end of the housing 10 by forming a self-ring structure.

At this time, a first connector 13 electrically connected to the battery is formed on the top of the housing 10, and a second connector 27 connected to the first connector 13 is formed on the lower surface of the horizontal plate 24. formed, and the conducting wire of the measurement unit 30 is connected to the second connector 27 to receive power from a battery.

That is, power can be supplied to the measuring unit 30 only when the mounting unit 20 is coupled to the housing 10, and the mounting unit 20 is moved to the housing 10 for sample removal and maintenance. When removed from the, it is possible to have a safety structure in which power supply to the measuring unit 30 is stopped.

A color comparison table 26 may be formed on the upper surface of the horizontal plate 24 along the circumferential direction. The color comparison table 26 is a means for comparing the color of the water quality test strap S, which is changed through a reagent reaction when the water quality test strap S is brought into contact with a sample, and the water quality test strap S is colored. It is possible to grasp the water quality information of the sample by directly comparing it to the check table 26.

Next, the measurement unit 30 is coupled to the holding unit 20 to measure the water quality of the specimen accommodated in the housing 10 to generate water quality information.

The measuring unit 30 may include a sensor for measuring water quality, and may include, for example, one or more of a pH measuring sensor, a dissolved oxygen measuring sensor, a conductivity measuring sensor, and a temperature measuring sensor.

If necessary, chlorine concentration (used to measure the concentration of chemicals dropped (sprayed) to improve water quality or reduce odor) and nitrogen concentration (ammonia nitrogen (NH4-N) concentration and nitrate nitrogen (NO3-N) concentration) ), a structure capable of measuring various water quality factors may be provided by further including a sensor for measurement.

In particular, the nitrogen concentration sensor for measuring the concentration of ammonia nitrogen (NH4-N) and nitrate nitrogen (NO3-N) is suitable for measuring the water quality of the sewer network, but if necessary, it is also introduced to the automatic measuring device for the water supply network to share the water and sewage pipes. sensors can be configured.

Each of the sensors may be coupled to the cylindrical member 21 made of a mesh material in a way such as hooking.

The water quality information measured by the measurement unit 30 may be converted into an analog value through a converter unit (not shown) into a digital value and transmitted to the control unit 40 .

Next, the control unit 40 may process the water quality information generated by the measuring unit 30 as a measured value and control the output on the display 11 .

That is, the control unit 40 analyzes the signal-processed digital value received from the converter unit and outputs it to the display 11 as a measured value.

To this end, the controller 40 uses a pH measuring sensor, a concentration measuring sensor, a dissolved oxygen (DO) measuring sensor, a conductivity measuring sensor, an automation sensor, a load cell, a pressure sensor, etc. connected to the measuring unit 30. A recognition program and a program that calculates and analyzes the information measured from these into voltage, current, pH, concentration, conductivity, weight, pressure, suspended solids concentration, salt concentration, etc. may be stored.

The control unit 40 is a component that controls the overall driving of the water quality meter according to the present invention, and may be implemented in the form of an integrated circuit mounted on a printed circuit board and accommodated inside the housing 10.

The display 11 is connected to the printed circuit board constituting the controller 40 and visually provides various information measured by the measurement unit 30 .

The display 11 is exposed to the outside through a window provided on one side of the housing 10, and all information such as residual power, measurement type unit, temperature, temperature unit, and measurement completion indication can be displayed and provided in a sufficient size. there is.

Next, the support part 50 is slidably mounted on the holding part 20 while supporting the water quality test strap S.

That is, the support part 50 is guided along the circular rail member 22 and the vertical rail member 23 of the holding part 20, and the water quality test strap S is placed on the holding part 20 in either the circumferential direction or the vertical direction. It can move in either direction.

More specifically, the support unit 50 may be illustrated as including a support block 51, a support plate 52, a protective net 53, a vortex fan 54, and an absorbing member 100.

First, the support block 51 has a first guide protrusion 51a connected to the circular rail member 22 and the vertical rail member 23, and supports the support plate 52 and the protective net 53 upward. When the support block 51 is connected to and guided to the circular rail member 22 and the vertical rail member 23, the configuration of the support plate 52, the protective net 53 and the absorbent member 100 can be moved in conjunction therewith. .

Next, the support plate 52 is a plate-shaped member rotatably coupled to the upper portion of the support block 51, and the housing ( 10) It is made of a structure having a sufficient length to be exposed to the upper surface of the surface of the water and graspable.

A side surface of the support plate 52 may be recessed with a guide rail 52a along the longitudinal direction, and an absorbent member 100, which will be described later, may be connected to and guided by the guide rail 52a.

The absorbent member 100 may be pressed to the side opposite to the side on which the guide rail 52a is formed.

Next, the protective net 53 is fixedly coupled to the upper portion of the support block 51 and faces the support plate 52 to fix the strap S for water quality inspection.

A water quality test strap (S) may be interposed and fixed between the protective net 53 and the support plate 52 rotated to face the protective net 53. At this time, the protective net 53 is of the strap S for water quality test. The lower part, that is, the part where the test item part is formed, has a structure made of a mesh material that allows the passage of the sample and restricts the passage of particulate matter.

Next, the vortex fan 54 is coupled to the outside of the support block 51 and forms a vortex in the specimen accommodated in the housing 10 so that the specimen accommodated in the housing 10 can be mixed evenly. Accordingly, it is possible to prevent an error in the test result from occurring because a specific component of the sample does not reach the measurement unit 30 and the water quality test strap S immersed in the sample.

Next, the absorbent member 100 is slidably coupled in a reciprocating manner along the longitudinal direction of the support plate 52 and serves to absorb moisture around the support plate 52 .

When the lower end of the support plate 52 is taken out and raised in a state of being immersed in the sample accommodated in the housing 10, the surroundings of the water quality test strap S including the support plate 52 are wet by the sample. At this time, the absorbent member 100 ) to quickly absorb excess moisture on the surface of the support plate 52 and the water quality test strap (S), thereby preventing deterioration of the test item due to the excessive moisture group, so that more accurate test results can be derived.

To this end, the absorbent member 100 may be largely exemplified as including a movable body 110, a first absorbent body 120, a second absorbent body 130 and a compression pin 140.

First, the movable body 110 is formed in a tubular shape and is coupled to a structure surrounding the outside of the support plate 52, and a second guide protrusion 111 connected to the guide rail 52a is formed on an inner surface.

The inner surface of the movable body 110 is spaced apart from the support plate 52 by a predetermined distance, so that the movable body 110 is directly attached to the support plate 52 or the water quality test strap S supported by the support plate 52 when the movable body 110 moves. so as not to interfere with

Next, the first absorber 120 is coupled to the inside of the moving body 110 and faces one side of the support plate 52 to absorb moisture on one side of the support plate 52 .

In addition, the second absorber 130 is coupled to the inside of the moving body 110 and faces the other side of the support plate 52 to absorb moisture from the other side of the support plate 52 .

That is, based on the information shown in FIG. 9, the first absorber 120 is coupled to the inner upper surface of the movable body 110, and the second absorber 130 is coupled to the inner lower surface of the movable body 110, respectively. equipped

The first absorbent body 120 and the second absorbent body 130 may be exemplified by sponge, pulp, etc. in line capable of absorbing moisture.

Next, the compression pin 140 passes through the movable body 110 and is selectively compressed and fixed to the support plate 52, thereby serving to fix the position of the absorbent member 100.

When the compression pin 140 is spaced apart from the support plate 52, the absorbent member 100 can move freely, but when the compression pin 140 presses the side of the support plate 52, the absorbent member 100 Any movement of can be limited.

At this time, a through-hole 112 through which the compression pin 140 passes is formed in the movable body 110, and a first supporting jaw 113 may protrude from the inside of the through-hole 112.

In addition, a second support jaw 141 protrudes from the outer circumferential surface of the compression pin 140, and an elastic spring 150 is installed between the first support jaw 113 and the second support jaw 141 to form a compression pin. (140) can be elastically pressed in the direction of the support plate (52).

That is, when moving the absorbing member 100, the compression pin 140 can be pulled outward to move the absorbing member 100 along the longitudinal direction of the supporting plate 52 in a state of being separated from the supporting plate 52, , When the pulled compression pin 140 is placed, the compression pin 140 is elastically moved in the direction of compressing the support plate 52 by the elastic spring 150, and is compressed and fixed to the side of the support plate 52, so that the absorbent member 100 can be fixed in a fixed position.

Hereinafter, with reference to the accompanying drawings, the operation of the water quality measuring device according to the present invention will be described by taking a process of measuring water quality using the water quality measuring device as an example.

First, a groundwater sample is taken inside the housing 10 . Subsequently, the water quality measuring device is set by interposing the strap S for measuring water quality between the support plate 52 and the protective net 53 of the support part 50 .

Next, as shown in FIG. 5, the support part 50 is lowered along the vertical rail member 23 so that the water quality measuring strap S can be immersed in the sample to a sufficient depth.

Next, the vortex fan 54 is operated to generate a vortex in the sample in the housing 10, and the water quality information measured by the measuring unit 30 is displayed on the display 11 as a measured value.

Next, the support part 50 supporting the water quality measurement strap S is moved upward along the vertical rail member 23 to lift it up from the sample, and as shown in FIG. 6, the first part of the support block 51 When the guide protrusion 51a rises to a height connected to the circular rail member 22, the support plate 52 is rotated outward so that it can be seated on the horizontal plate 24. Thus, the strap (S) interposed between the support plate 52 and the protective net 53 may rotate along the support plate 52 to be seated and supported on the support plate 52 .

At this time, just before the support plate 52 is rotated by 90 degrees and seated on the horizontal plate 24, as shown in FIG. Remove excess moisture around the inspection strap (S).

Subsequently, as shown in FIG. 7, when the support plate 52 is seated on the horizontal plate 24, as shown in FIG. 8, in this state, the support part 50 is moved in the circumferential direction of the circular rail member 22. The water quality of the sample can be visually confirmed by comparing the color of the water quality test strap (S) reacting to the sample while rotating along the color comparison table 26.

In summary, the water quality measuring instrument according to the present invention can not only mechanically measure the water quality of various inspection items using various types of sensors, but also easily perform water quality measurement using the water quality inspection strap (S). It provides an effect that allows the water quality measurement process to be simple and more objective to derive a water quality measurement test.

The embodiments of the present invention described above are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and alternatives within the spirit and scope of the present invention as defined by the appended claims.

10: housing
20: mounting part
30: measuring unit
40: control unit
50: support
11: display
S: Strap for water quality measurement

Claims (5)

A housing formed in the form of a box to accommodate a sample therein, with an open top and a display formed on an outer surface;
a mounting portion detachably coupled to the inside of the housing and formed in the form of a box made of a mesh material;
a measurement unit coupled to the holding unit and generating water quality information by measuring the quality of the sample accommodated in the housing;
a control unit that processes the water quality information generated by the measuring unit as a measured value and outputs it to a display; and
A groundwater quality measuring device comprising a support part slidably mounted on the holding part in a state in which the water quality test strap is supported. The method of claim 1,
The measuring unit,
A groundwater quality measuring device comprising at least one of a pH measuring sensor, a dissolved oxygen measuring sensor, a conductivity measuring sensor, and a temperature measuring sensor. The method of claim 2,
The holding part,
A cylindrical member made in the form of a cylindrical enclosure made of mesh material;
a circular rail member formed in a circular shape along an upper circumference of the cylindrical member and guiding the support portion in a circumferential direction; and
and a vertical rail member extending downward from the circular rail member along the inner surface of the cylindrical member and guiding the support portion in the vertical direction. The method of claim 3,
At the upper end of the circular rail member, a horizontal plate is vertically bent and extended outward, and a vertical plate is vertically bent and extended downward from the circumference of the horizontal plate, so that the circular rail member, the horizontal plate and the vertical plate are interconnected.

It is configured to be seated on the upper circumference of the housing by forming a 'character structure,
A color comparison table is formed on the upper surface of the horizontal plate along the circumferential direction,
the support,
a support block formed with a first guide protrusion connected to the circular rail member and the vertical rail member;
a support plate rotatably coupled to an upper portion of the support block;
A protective net having a mesh structure fixedly coupled to an upper portion of the support block and facing the support plate to fix a water quality test strap;
a vortex fan coupled to the outside of the support block and forming a vortex in the specimen accommodated in the housing; and
An absorbent member that is slidably coupled in a reciprocating manner along the longitudinal direction of the support plate and absorbs moisture around the support plate;
A guide rail is recessed along the longitudinal direction on the side surface of the support plate,
The absorbent member,
a moving body having a tubular shape, coupled to a structure surrounding the outside of the support plate, and having a second guide protrusion connected to the guide rail on an inner surface thereof;
A first absorber coupled to the inside of the moving body and facing one side of the support plate to absorb moisture on one side of the support plate;
a second absorber coupled to the inside of the moving body and facing the other side of the support plate to absorb moisture from the other side of the support plate; and
A compression pin coupled through the movable body and selectively compressed and fixed to the support plate;
A through-hole through which the compression pin passes is formed in the movable body, a first supporting jaw protrudes from an inside of the through-hole, and a second supporting jaw protrudes from an outer circumferential surface of the compression pin, and the first supporting jaw and An elastic spring is installed between the second support jaws to elastically press the compression pin in the direction of the support plate,
When the first guide protrusion of the support block rises to the height connected to the circular rail member, the support plate is rotated outward and is seated as a horizontal plate. Groundwater quality measuring instrument, characterized in that for comparing the color of the water quality test strap to the color comparison table. The method of claim 4,
A first connector electrically connected to the battery is formed at an upper end of the housing, a second connector connected to the first connector is formed at a lower surface of the horizontal plate, and a lead wire of the measuring unit is connected to the second connector to form a battery. Groundwater water quality meter, characterized in that receiving the power of.

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