CN109596609A - A kind of multi-parameter sewage quality monitor - Google Patents

A kind of multi-parameter sewage quality monitor Download PDF

Info

Publication number
CN109596609A
CN109596609A CN201811627753.XA CN201811627753A CN109596609A CN 109596609 A CN109596609 A CN 109596609A CN 201811627753 A CN201811627753 A CN 201811627753A CN 109596609 A CN109596609 A CN 109596609A
Authority
CN
China
Prior art keywords
module
parameter
sensor
quality monitor
control panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811627753.XA
Other languages
Chinese (zh)
Inventor
肖贤声
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGZHOU JINRUN ENVIRONMENTAL PROTECTION TECHNOLOGY Ltd
Original Assignee
GUANGZHOU JINRUN ENVIRONMENTAL PROTECTION TECHNOLOGY Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGZHOU JINRUN ENVIRONMENTAL PROTECTION TECHNOLOGY Ltd filed Critical GUANGZHOU JINRUN ENVIRONMENTAL PROTECTION TECHNOLOGY Ltd
Priority to CN201811627753.XA priority Critical patent/CN109596609A/en
Publication of CN109596609A publication Critical patent/CN109596609A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

Abstract

The invention discloses a kind of multi-parameter sewage quality monitor, including cabinet (1), raw liquor pump (29) and the second ant pipe (21) are installed in the cabinet.The raw liquor pump (29) passes sequentially through the first ant pipe (9), the second silicone tube (13) is connected with two into one colorimetric cylinders (15) gone out.Second ant pipe side is equipped with master control borad (18), and the second ant pipe other side is equipped with valve control panel (19) and pump control panel (20).The water quality monitor can carry out contents of many kinds of heavy metal ion component parameter one-time detection, it is easy to operate to be illustrated, avoid the detected liquid of personnel and chemical reagent from directly injuring, which takes intelligent processing, it is logical to complete, it can select to check result on large-size screen monitors on capacitor display screen after detection.

Description

A kind of multi-parameter sewage quality monitor
Technical field
The present invention relates to a kind of water quality monitor, specially a kind of multi-parameter sewage quality monitor belongs to water quality monitoring Technical field.
Background technique
The mode of detection underground water heavy metal ion component is divided into two kinds substantially at present: one kind is using artificial Fieldable chemical The mode of reagent titration, still, it is however generally that, detection site environment is more complicated, and the chemical reagent detected is deployed at the scene When it is very inconvenient, many reagents be to human body it is harmful, contamination needs a large amount of clear water to rinse on the skin, and field condition Do not have, may cause damages to the safety of user of service so as to cause the use of chemical reagent, and at the waste liquid after reaction It is improper to manage, and is likely to result in secondary hazards;Another is field sampling, specifically send field sample to laboratory In, and tested by the professional of environmentally friendly qualification, this mode operates very troublesome, and testing cost is expensive.
Summary of the invention
The object of the invention is that providing a kind of multi-parameter sewage quality monitor to solve the above-mentioned problems, this is more Parameter sewage quality monitor can measure the huge sum of money ion qualitative detection in water quality, and be automatically performed by instrument.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of multi-parameter sewage quality monitor, including case Body is equipped with the raw liquor pump that can extract extraneous water sample to be detected in the special cabinet;The raw liquor pump passes sequentially through first Ant pipe, the second silicone tube are connected with two into one colorimetric cylinders gone out;
The colorimetric cylinder side is equipped with color mark sensor connected to it, and the color mark sensor side is equipped with than toner pipe And peristaltic pump, the peristaltic pump are communicated by the first silicone tube with than toner pipe, the peristaltic pump by the first silicone tube with than Colour tube communicates;
The colorimetric cylinder is connect by the second silicone tube with Unidirectional solenoid valve, and the Unidirectional solenoid valve lower end is connected with second in turn Silicone tube and the second ant pipe;
The second ant pipe is connect by the second silicone tube with mutually matched outer silk pagoda connector and internal thread pagoda connector;
The second ant pipe side is equipped with master control borad, and the second ant pipe other side is equipped with valve control panel and pump control Plate.
Preferably, mainboard, middle mainboard and lower mainboard are installed, wherein the first ant pipe and in the cabinet Two ant pipes are symmetrical with the middle mainboard.
It preferably, further include having main solid with the middle orthogonal second partition of mainboard, the second partition two sides Determine screw rod and upper middle plate fixed link.
Preferably, described internal thread pagoda connector one end passes through the filter of the second silica gel plate connecting band strainer.
Preferably, the raw liquor pump is communicated by the second silicone tube with the outer silk pagoda connector and internal thread pagoda connector.
A kind of monitoring system for multi-parameter sewage quality monitor, the monitoring system include master board, valve control Making sheet and pump control panel;
Wherein, the master board includes micro treatment module and sensor module, and the micro treatment module can be by the sensing Device module the data obtained is shown on the capacitance touch screen outside cabinet, and the micro treatment module is connected with printer;
The micro treatment module can export low and high level signal to the valve control panel and pump control panel;
The valve control panel includes the second drive module, and second drive module can control the open and close of solenoid valve, And second drive module can control raw liquor pump;
The pump control panel includes the first drive module, and first drive module can control the open and close of peristaltic pump.
It further, further include switching on and shutting down module, the switching on and shutting down module is connected with power module, and the power module is in parallel Connect the first drive module, micro treatment module and capacitance touch screen.
Further, the power module includes being located in the box body battery, and power source charges being located on the body wall Mouthful.
Further, switching on and shutting down module is arranged in the battery side, and the switching on and shutting down module includes that can control battery energization With the switch of disconnection.
Further, the sensor module includes lead sensor, Cr VI sensor, cadmium sensor, nickel sensor, zinc biography Sensor and mercury sensor;The quantity of sensor matches in the quantity and sensor module of the solenoid valve and peristaltic pump.
Compared with prior art, the beneficial effects of the present invention are: 1) water quality monitor can carry out various heavy from Sub- component parameter one-time detection, detection ion needed for being respectively provided in Reagent Tube it is corresponding than toner, it is various to distinguish than toner The respective colorimetric cylinder of independent input in, the change of color in the parallel each colorimetric cylinder of independent reading of each colorimetric sensor Change, and then can reach the requirement to a variety of required detection ion component parameter one-time detections;
2) easy to operate to be illustrated, avoid the detected liquid of personnel and chemical reagent from directly injuring, it only need to be by instrument when being detected Sampling nozzle be placed in water sample to be detected, turn on the power switch, click start to detect, instrument can be sampled automatically, point Analysis as a result, it is easy to operate be illustrated, avoid personnel from directly being injured by detected liquid and chemical reagent.
3) device takes intelligent processing, leads to and completes, can select on large-size screen monitors on capacitor display screen after detection It selects and checks as a result, and can directly print result by printer.Chest adopts light aluminum alloy casing, has good Anti-corrosion, performance that is moisture-proof, putting high temperature can adapt to various environment, work under various operating conditions.
Detailed description of the invention
Fig. 1 is cabinet top view of the present invention;
Fig. 2 is the A-A cross-sectional view of Fig. 1 in the present invention;
The B-B cross-sectional view that Fig. 3 is Fig. 1 in the present invention;
Fig. 4 is the top view of the middle mainboard in the present invention;
Fig. 5 is the mounting structure schematic diagram of upper mainboard of the invention, middle mainboard and lower mainboard;
Fig. 6 is the top view of the lower mainboard in of the invention;
Fig. 7 is the overall schematic of present system;
Fig. 8 is work flow diagram of the invention;
Fig. 9 is automatically cleaning flow chart of the invention;
In figure: 1, cabinet, 2, power supply, 3, switch, 4, printer, 5, capacitance touch screen, 6, panel, 7, peristaltic pump, the 8, first silicon Sebific duct, the 9, first ant pipe, 10, than toner pipe, 11, first partition, 12, Unidirectional solenoid valve, the 13, second silicone tube, 14, filtering Head, 15, colorimetric cylinder, 16, color mark sensor, 17, second partition, 18, master control borad, 19, valve control panel, 20, pump control panel, 21, Second ant pipe, 22, U-tube folder, 23, outer silk pagoda connector, 24, internal thread pagoda connector, 25, upper mainboard, 26, lower mainboard, 27, Lower mainboard, 28, battery, 29, raw liquor pump, 30, third partition, 31, main standing screw, 32, upper middle plate fixed link, the 33, the 4th every Plate, 34, regulator board.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 2 and Figure 4: a kind of multi-parameter sewage quality monitor, including cabinet 1 are equipped with upper master in cabinet 1 Plate 25, middle mainboard 26 and lower mainboard 27.Meanwhile it being also equipped in cabinet 1 and upper mainboard 25, middle mainboard 26 and lower 27 phase of mainboard Mutually vertical first partition 11 and second partition 17.Main fixed spiral shell is symmetrically installed in first partition 11 and 17 two sides of second partition Bar 31 and upper middle plate fixed link 32.It, can be by upper mainboard 25, middle mainboard 26 by main standing screw 31 and upper middle plate fixed link 32 It is fixed in cabinet with lower mainboard 27, and cabinet is divided into grid layout.
As shown in Figure 5 and Figure 6, the 4th symmetrical partition 33 is installed at 11 both ends end of first partition, described first every 11 two sides of plate are equipped with symmetrical third partition 30.The regulator board 34 that can be adjusted is installed in lower 27 side of mainboard. As depicted in figs. 1 and 2, raw liquor pump 29 is installed at first partition 11, raw liquor pump 29 can extract extraneous water sample to be detected. Colorimetric cylinder 15, the first ant pipe 9, the first silicone tube 8, the second silicone tube 13, colour code are symmetrically distributed in 11 two sides of first partition Sensor 16 and than toner pipe 10.The raw liquor pump 29 passes sequentially through the first ant pipe 9, the second silicone tube 13 and two into one goes out Colorimetric cylinder 15 connects.15 side of colorimetric cylinder is equipped with the color mark sensor 16 to match with corresponding colorimetric cylinder, described 16 side of color mark sensor is equipped with than toner pipe 10 and peristaltic pump 7.The peristaltic pump 7 is by the first silicone tube 8 and than toner Pipe 10 communicates, and the peristaltic pump 7 is communicated by the first silicone tube 8 with colorimetric cylinder 15.In 17 two sides of second partition, the colorimetric cylinder 15 are connect by the second silicone tube 13 with Unidirectional solenoid valve 12, and 12 lower end of Unidirectional solenoid valve is connected with the second silicone tube in turn 13 and the second ant pipe 21, the second ant pipe 21 by the second silicone tube 13 and mutually matched outer silk pagoda connector 23 and Internal thread pagoda connector 24 connects.The U-tube folder with the effect that supports and fixes is provided at the second ant pipe 21.
It is as shown in Figure 2: master control borad 18 being installed on the left of the second partition, valve is installed on the right side of the second partition Control panel 19 and pump control panel 20.The master control borad 18 can export low and high level signal to valve control panel 19 and pump control panel 20, and then by control master control borad 18, the open and close of raw liquor pump 29 can be controlled.
As shown in Figure 3: described 24 one end of internal thread pagoda connector passes through the filter 14 of 13 connecting band strainer of the second silica gel plate, leads to The filter 14 with strainer is crossed, the water after capable of excluding detection, the raw liquor pump 2 passes through the second silicone tube 13 and the outer silk treasured Tower connector 23 and internal thread pagoda connector 24 communicate.
As shown in Figure 7: a kind of monitoring system for multi-parameter sewage quality monitor, the monitoring system includes master control Making sheet 18, valve control panel 19 and pump control panel 20;Wherein, the master board 18 includes micro treatment module and sensor module, The sensor module the data obtained can be shown on the capacitance touch screen 5 outside cabinet 1 by the micro treatment module, electricity Hold touch screen 5 to be mounted on panel 6, the micro treatment module is connected with printer 4.The micro treatment module includes microprocessor (STM32F103), the rgb value of color and the RGB of calibrated concentration are compared contained by determining each ion in a liquid Concentration.The sensor module includes six external sensors (TCS230), is distributed as lead sensor, Cr VI sensor, cadmium Sensor, nickel sensor, zinc sensor and mercury sensor obtain six tunnel measurement data by six sensors, will be collected The rgb value of respective color is transferred to microprocessor.The number of sensor in the quantity and sensor module of solenoid valve and peristaltic pump Amount matches.
There are also the electricity of moment monitoring lithium battery for microprocessor as shown in Figure 1:.Power module includes being located in cabinet 1 Battery 28, and the power source charges mouth 2 on 1 outer wall of cabinet.Devised between the positive and negative anodes of the power supply of instrument one by R, the bleeder circuit of C composition, the range ability that voltage to single-chip microcontroller can be monitored, then adopted by the ADC inside single-chip microcontroller Collect the current electricity of power supply, and is shown in touch display screen.
Control the display of the touch display screen of LCD.LCD touch screen driving circuit designs the circuit by touch screen, micro process Device and power regulator module LM1117-5.0 and its peripheral circuit composition, Voltage stabilizing module provide power supply for the work of touch screen, not Serial communication is used between processor and touch screen, to control the operation and display of touch screen.Store necessary internal information.Make Important information is stored in the inside with the EEPROM cell come with inside microprocessor module.
The pump control panel 20 includes the first drive module, first drive module can control the unlatching of peristaltic pump with Close opening, stopping for control peristaltic pump.First drive module is by microprocessor (STM32F103), power regulator module (LM2596S), optocoupler, high-power MOS tube, protection diode composition, microprocessor realize light by the transformation of low and high level The switch of coupling, and then control the cut-offfing to achieve the purpose that pump is opened, stopped of metal-oxide-semiconductor.
The valve control panel 19 includes the second drive module, second drive module can control the unlatching of solenoid valve with It closes, and second drive module can control raw liquor pump 29 and control opening, stopping for solenoid valve.Second drive module is by micro- Manage device (STM32F103), power regulator module (LM2596S), optocoupler, high-power MOS tube, protection diode composition, micro process Device realizes the switch of optocoupler by the transformation of low and high level, and then control metal-oxide-semiconductor cut-offs the mesh opened, stopped to reach solenoid valve 's.
It controls printer and prints testing result.The circuit is by printer, microprocessor and power regulator module LM2596S And its peripheral circuit composition, Voltage stabilizing module provide power supply for the work of printer, using serial between untreated device and printer Communication, to control the printing of printer.
The switching on and shutting down module is connected with power module, and the power module is connected in parallel the first drive module, micro process Module and capacitance touch screen.Power module uses lithium electricity charge protector, spx3819M5-L-5, spx3819M5-L-3.3 phase In conjunction with composition, a stable voltage is provided for the normal work of host modules.
It is as shown in Figure 8: the work flow diagram of figure this multi-parameter sewage quality monitor.After work starts, pass through switch Start, shows that the hardware connection of default is normal, and display reminding demarcates colour code, is demarcated, raw liquor pump extracts liquid to be detected Into colorimetric cylinder, the detection reagent of the heavy metal ion detected needed for being sucked parallel with peristaltic pump is into reaction tube, setting detection Parameter starts to detect, and then compares in MCU with index colour developing value, and then the qualitative heavy metal ion separated in water quality Component.And prompt have automatically cleaning, as shown in Figure 9.It by the effect of control panel, is drawn water and is delayed by raw liquor pump, thus complete At cleaning.In the process, can read colour code in display screen, generate concentration, and save, the display in touch display screen as a result, And prompt to print, after the completion of printing, solenoid valve is closed by control panel, completes detection.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.This Outside, it should be understood that although this specification is described in terms of embodiments, but not each embodiment only includes an independence Technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should make specification For an entirety, the technical solutions in the various embodiments may also be suitably combined, formed it will be appreciated by those skilled in the art that Other embodiments.

Claims (10)

1. a kind of multi-parameter sewage quality monitor, including cabinet (1), it is characterised in that: be equipped with energy in the cabinet (1) Enough raw liquor pumps (29) for extracting extraneous water sample to be detected;The raw liquor pump (29) passes sequentially through the first ant pipe (9), the second silicon Sebific duct (13) is connected with two into one colorimetric cylinders (15) gone out;
Colorimetric cylinder (15) side is equipped with color mark sensor connected to it (16), color mark sensor (16) side Be equipped with than toner pipe (10) and peristaltic pump (7), the peristaltic pump (7) by the first silicone tube (8) with than toner pipe (10) phase Logical, the peristaltic pump (7) is communicated by the first silicone tube (8) with colorimetric cylinder (15);
The colorimetric cylinder (15) is connect by the second silicone tube (13) with Unidirectional solenoid valve (12), under the Unidirectional solenoid valve (12) End is connected with the second silicone tube (13) and the second ant pipe (21) in turn;
The second ant pipe (21) is precious by the second silicone tube (13) and mutually matched outer silk pagoda connector (23) and internal thread Tower connector (24) connection;
Second ant pipe (21) side is equipped with master control borad (18), and the second ant pipe (21) other side is equipped with valve Control panel (19) and pump control panel (20).
2. a kind of multi-parameter sewage quality monitor according to claim 1, it is characterised in that: peace in the cabinet (1) Equipped with upper mainboard (25), middle mainboard (26) and lower mainboard (27), wherein the first ant pipe (9) and the second ant pipe (21) It is symmetrical with the middle mainboard (26).
3. a kind of multi-parameter sewage quality monitor according to claim 1, it is characterised in that: further include and the middle master There are main standing screw (31) He Shangzhong plate in plate (26) orthogonal second partition (17), second partition (17) two sides Fixed link (32).
4. a kind of multi-parameter sewage quality monitor according to claim 1, it is characterised in that: the internal thread pagoda connector (24) one end passes through the filter (14) of the second silica gel plate (13) connecting band strainer.
5. a kind of multi-parameter sewage quality monitor according to claim 1, it is characterised in that: the raw liquor pump (29) is logical The second silicone tube (13) is crossed to communicate with the outer silk pagoda connector (23) and internal thread pagoda connector (24).
6. it is a kind of for claim 1 to the monitoring system of the described in any item multi-parameter sewage quality monitors of claim 5, It is characterized in that, the monitoring system includes master board (18), valve control panel (19) and pump control panel (20);
Wherein, the master board (18) includes micro treatment module and sensor module, and the micro treatment module can will be described Sensor module the data obtained is shown on the outer capacitance touch screen (5) of cabinet (1), and the micro treatment module, which is connected with, to be beaten Print machine (4);
The micro treatment module can export low and high level signal to the valve control panel (19) and pump control panel (20);
The valve control panel (19) includes the second drive module, and second drive module can control unlatching and the pass of solenoid valve It closes, and second drive module can control raw liquor pump (29);
The pump control panel (20) includes the first drive module, and first drive module can control unlatching and the pass of peristaltic pump It closes.
7. a kind of monitoring system of multi-parameter sewage quality monitor according to claim 6, it is characterised in that: further include Switching on and shutting down module, the switching on and shutting down module are connected with power module, and the power module is connected in parallel the first drive module, Wei Chu Manage module and capacitance touch screen.
8. a kind of monitoring system of multi-parameter sewage quality monitor according to claim 7, it is characterised in that: the electricity Source module includes the battery (28) in cabinet (1), and the power source charges mouth (2) being located on cabinet (1) outer wall.
9. a kind of monitoring system of multi-parameter sewage quality monitor according to claim 7, it is characterised in that: the electricity Switching on and shutting down module is arranged in pond (28) side, and the switching on and shutting down module includes the switch (3) that can be controlled battery and be powered and disconnect.
10. a kind of monitoring system of multi-parameter sewage quality monitor according to claim 7, it is characterised in that: described Sensor module includes lead sensor, Cr VI sensor, cadmium sensor, nickel sensor, zinc sensor and mercury sensor;It is described The quantity of sensor matches in the quantity and sensor module of solenoid valve and peristaltic pump.
CN201811627753.XA 2018-12-28 2018-12-28 A kind of multi-parameter sewage quality monitor Pending CN109596609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811627753.XA CN109596609A (en) 2018-12-28 2018-12-28 A kind of multi-parameter sewage quality monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811627753.XA CN109596609A (en) 2018-12-28 2018-12-28 A kind of multi-parameter sewage quality monitor

Publications (1)

Publication Number Publication Date
CN109596609A true CN109596609A (en) 2019-04-09

Family

ID=65964667

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811627753.XA Pending CN109596609A (en) 2018-12-28 2018-12-28 A kind of multi-parameter sewage quality monitor

Country Status (1)

Country Link
CN (1) CN109596609A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110907620A (en) * 2019-12-25 2020-03-24 安徽清大云博环保科技有限公司 Method for monitoring ions in water of sewage treatment plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110907620A (en) * 2019-12-25 2020-03-24 安徽清大云博环保科技有限公司 Method for monitoring ions in water of sewage treatment plant

Similar Documents

Publication Publication Date Title
CN102680469B (en) Multi-parameter rapid detection method and equipment for water quality of household drinking water
CN202693478U (en) Quick detecting equipment for quality parameters of domestic drinking water
CN102353756A (en) Hand-held water quality analyzer
CN206362693U (en) A kind of water monitoring device on tap
CN109596609A (en) A kind of multi-parameter sewage quality monitor
CN101430274A (en) Hemoglobin colour comparison detection apparatus
CN207675654U (en) A kind of multi-parameter water quality monitor
CN109238322A (en) It is a kind of that system is monitored based on infrared transmitting tube and the pointer instrument of reception pipe
CN205786335U (en) Portable food detector
CN209589859U (en) A kind of Image Acquisition box using smart phone detection urine index
CN209696977U (en) A kind of test tube storing box identifying blood sampling time
CN107796811A (en) A kind of multi-parameter water quality monitor
CN109752374A (en) A kind of Image Acquisition box using smart phone detection urine index
CN108051579A (en) portable AIDS saliva detector
CN211785066U (en) Portable epidemic prevention quick detection case
CN205750428U (en) A kind of vertical compression leak detector
CN207764223U (en) portable AIDS saliva detector
CN209280566U (en) A kind of dry air formaldehyde in-situs tester
CN206684269U (en) Test board weighs electrifying device automatically
CN218848121U (en) Water quality detection pen
CN109030127A (en) A kind of air detection sampler
CN209707488U (en) A kind of chlorine residue analyzer
CN205450250U (en) Indoor electric energy meter shunt running test instrument for examination
CN204302215U (en) Portable dry serum ion analyser
CN205537767U (en) Data wireless transmission formula death time analysis appearance

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20190409