CN207163961U - PH measurement apparatus - Google Patents
PH measurement apparatus Download PDFInfo
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- CN207163961U CN207163961U CN201721092566.7U CN201721092566U CN207163961U CN 207163961 U CN207163961 U CN 207163961U CN 201721092566 U CN201721092566 U CN 201721092566U CN 207163961 U CN207163961 U CN 207163961U
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- 238000001139 pH measurement Methods 0.000 title claims abstract description 45
- 238000007667 floating Methods 0.000 claims abstract description 73
- 238000005259 measurement Methods 0.000 claims abstract description 56
- 239000002351 wastewater Substances 0.000 claims abstract description 49
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 239000010842 industrial wastewater Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000523 sample Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
This application provides a kind of pH measurement apparatus.The pH measurement apparatus includes：Fixation kit, including fixed body；Floatation element, including floating auxiliary and floating main part, floating auxiliary are set in the outside of fixed body, and floating main part is fixedly installed on floating auxiliary；PH measurement assemblies, including pH electrodes, pH electrodes include measurement portion, and measurement portion is arranged on floating main part, and measurement portion is used for the pH for measuring waste water.The pH measurement apparatus is simple in construction, is easily installed fixation, and it is very convenient to change electrode during maintenance, has saved manpower and materials；Using the measurement apparatus, pH electrodes need not be installed in waste water conveying pump discharge main pipe, and pump need not play circulation always, save many electricity, very economical；The present apparatus can realize floating type measurement, this to measure for compared to fixed measurement, and waste water pit level can be avoided too low and measurement portion is separated with waste water, it is ensured that continuous measurement.
Description
Technical field
The application is related to industrial wastewater pH detection fields, in particular to a kind of pH measurement apparatus.
Background technology
Thermal power plant is provided with full factory's industrial waste water centralized treatment system, and the recovery of all types of industries classification of waste focuses on.
The waste water focused on has regenerated acid and alkali waste water, condensate polishing system draining, the cleaning boiler of Boiler water Feeding System system
Waste water, main building ground flushing water and oily waste water etc., various classification of wastes deliver to industrial waste water centralized treatment station after collecting,
Water quality reaching standard can be comprehensively utilized after processing.
As an important step of whole waste water treatment process, pH value adjustment directly influences the processing effect of industrial wastewater
Fruit, therefore, pH value are a key control parameters and monitoring index for Industrial Waste Water in Coal-fired Power Plant processing.As country is to thermal power plant
The pay attention to day by day of environmentally friendly this aspect, power plant is to the industrial wastewater pH reliabilities measured it is also proposed that higher requirement.
At present, the measuring point of the pH measurements of Industrial Waste Water in Coal-fired Power Plant is generally selected on the outlet conduit of waste water delivery pump, this
Metering system has two shortcomings：First, power consumption, pump will play circulation always, once pump stops, pH measurements can only be in pipeline
The wastewater pH stockpiled, rather than the average pH of whole wastewater disposal basin, such result is just no representative, loses the meaning of measurement；Two
Electrode inconvenience is changed when being maintenance, it is necessary to which measure is done in termination of pumping.
Also some power plant use metering system as shown in Figure 1, and pH electrodes 2' is fixed on into one using a closure 4'
Root pvc pipe 3' bottom, pH electrodes 2' are threaded into closure 4' by outer protective sleeve, recycle closure 4' external thread rotary
Enter the non-waterproofs of pvc pipe 3', pH electrode 2', its tie point with electrode wires is in pvc pipe 3' inside.Although this device can hinder
Only industrial wastewater enters inside pvc pipe 3', but run time one is grown, rainwater, condensed water and expanding with heat and contract with cold because of pvc pipe 3'
And the industrial wastewater penetrated into out of gas pipe thread gap can deposit and will be intake in pvc pipe 3' inside, pH electrodes 2' probe
Damage.This design is a further disadvantage is that in the case where pvc pipe 3' probes into pond too depth, wastewater disposal basin 1' basic sediment
PH electrodes 2' probe fouling can be made and failed, if the depth that pvc pipe 3' probes into pond is inadequate, then, once wastewater disposal basin
Liquid level, which is reduced to a certain extent, will make probe expose the surface and can not continuously detect pH.
Fig. 2 metering system is directly to throw into wastewater disposal basin 1' metering system, this side using integral type Water-proof electrode 5'
Although method, without the puzzlement of electrode waterlogged damage, its point position is fixed, and electrode wires are put oversize, wastewater disposal basin bottom
Portion's deposit can make electrode fouling and fail, and electrode wires are put too short, then, once wastewater disposal basin liquid level is low will to make electrode with giving up
Water separates and can not continuously detect pH.
Utility model content
The main purpose of the application is to provide a kind of pH measurement apparatus, with solve pH measurement apparatus of the prior art without
Method adapts to the change of waste water pit level, and then the problem of continuous measurement can not be realized.
To achieve these goals, this application provides a kind of pH measurement apparatus, the pH measurement apparatus to include：Fixed group
Part, including fixed body；Floatation element, including floating auxiliary and floating main part, above-mentioned floating auxiliary are set in above-mentioned fixation originally
The outside of body, above-mentioned floating main part are fixedly installed on above-mentioned floating auxiliary；PH measurement assemblies, including pH electrodes, above-mentioned pH electricity
Pole includes measurement portion, and above-mentioned measurement portion is arranged on above-mentioned floating main part, and above-mentioned measurement portion is used for the pH for measuring waste water.
Further, above-mentioned fixation kit also includes：Locating part, it is arranged on above-mentioned fixed body and is located at above-mentioned floating
The lower section of auxiliary, above-mentioned locating part are used for the above-mentioned floating auxiliary of backstop.
Further, above-mentioned locating part is spacing catch, and above-mentioned fixed body is fixing pipe.
Further, above-mentioned fixed body is pvc pipe.
Further, above-mentioned floating auxiliary is iron hoop.
Further, above-mentioned floating auxiliary is tripping sleeve, and above-mentioned floating main part is floating plate, and above-mentioned floating plate is close to above-mentioned floating
The bottom fixed setting of moving sleeve.
Further, above-mentioned tripping sleeve is PVC tripping sleeves.
Further, a through hole being adapted to above-mentioned measurement portion is offered on the thickness direction of above-mentioned floating plate, it is above-mentioned logical
Hole is used to install above-mentioned measurement portion.
Further, above-mentioned pH electrodes are integral type Water-proof electrode.
Further, above-mentioned pH measurement assemblies also include：PH tables, electrically connected with above-mentioned pH electrode replaceables.
Further, above-mentioned pH electrodes also include electrode wires and the first plug, one end of above-mentioned electrode wires and above-mentioned measurement
Portion electrically connects, and the other end of above-mentioned electrode wires electrically connects with above-mentioned first plug, and above-mentioned pH tables include table body, wire and second
Plug, one end of above-mentioned wire electrically connect with above-mentioned table body, and the other end of above-mentioned wire electrically connects with above-mentioned second plug, on
It is integrated plug that the first plug, which is stated, with above-mentioned second plug.
Using the technical scheme of the application, this pH measurement apparatus is simple in construction, is easily installed fixation, changes electrode during maintenance
It is very convenient, save manpower and materials；Using the measurement apparatus, pH electrodes need not be installed on conveys pump discharge main pipe in waste water
On, pump need not play circulation always, save many electricity, very economical；The present apparatus can realize floating type measurement, this survey
Measure for compared to fixed measurement, waste water pit level can be avoided too low and measurement portion is separated with waste water, it is ensured that even
Continuous measurement.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.In the accompanying drawings：
Fig. 1 shows a kind of structural representation of pH measurement apparatus of the prior art；
Fig. 2 shows the structural representation of another pH measurement apparatus of the prior art；And
Fig. 3 shows the structural representation for the pH measurement apparatus that a kind of embodiment of the application provides.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
1', wastewater disposal basin；2', pH electrode；3', pvc pipe；4', closure；5', integral type pH Water-proof electrodes；1st, this is fixed
Body；2nd, floating auxiliary；3rd, floating main part；4th, pH electrodes；5th, locating part；6th, pH tables；30th, through hole；31st, fixed part；41st, measure
Portion；42nd, electrode wires；43rd, the first plug；61st, table body；62nd, wire；63rd, the second plug.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, pH measurement apparatus of the prior art can not adapt to the change of waste water pit level,
And then continuous measurement can not be realized, in order to solve technical problem as above, present applicant proposes a kind of pH measurement apparatus.
In a kind of typical embodiment of the application, it is proposed that a kind of pH measurement apparatus, as shown in figure 3, the pH is measured
Device includes fixation kit, floatation element and pH measurement assemblies.
Wherein, fixation kit includes fixed body 1, in the pH of the waste water during above-mentioned pH measurement apparatus measures wastewater disposal basin,
Above-mentioned fixation kit is fixedly installed in wastewater disposal basin；Floatation element includes floating auxiliary 2 and floating main part 3, above-mentioned floating auxiliary 2
The outside of above-mentioned fixed body 1 is set in, above-mentioned floating main part 3 is fixedly installed on above-mentioned floating auxiliary 2, above-mentioned useless measuring
During the pH of water, above-mentioned floatation element floats with the change of the liquid level of above-mentioned wastewater disposal basin and causes above-mentioned floating main part 3 all the time
On the liquid level for floating above-mentioned wastewater disposal basin；PH measurement assemblies include pH electrodes 4, and above-mentioned pH electrodes 4 include measurement portion 41, above-mentioned measurement
Portion 41 is arranged on above-mentioned floating main part 3, and above-mentioned measurement portion 41 is used for the pH for measuring above-mentioned waste water, when measuring the pH of waste water,
With the floating of above-mentioned floating main part 3, above-mentioned measurement portion 41 submerges in the waste water of above-mentioned wastewater disposal basin all the time.
The above-mentioned pH measurement apparatus of the application is simple in construction, is easily installed fixation, and it is very convenient to change electrode during maintenance, section
About manpower and materials；Using the measurement apparatus, pH electrodes need not be installed in waste water conveying pump discharge main pipe, and pump is without always
Circulation is played, saves many electricity, it is very economical；The present apparatus can realize floating type measurement, and this measurement is compared to fixation
For the measurement of formula, waste water pit level can be avoided too low and measurement portion is separated with waste water, it is ensured that continuous measurement.
It is spacing in order to be carried out to the extreme lower position of floating auxiliary, so as to avoid the position of floating auxiliary too low, and then avoid
Measurement portion enters wastewater disposal basin and covered and fouling deeply and by the deposit of wastewater disposal basin bottom very much, in a kind of embodiment of the application, such as
Shown in Fig. 3, above-mentioned fixation kit also includes locating part 5, and locating part 5 is arranged on above-mentioned fixed body 1 and is located at above-mentioned floating
The lower section of auxiliary 2, above-mentioned locating part 5 are used for the above-mentioned floating auxiliary 2 of backstop.
In a kind of embodiment of the application, above-mentioned locating part 5 is spacing catch, and above-mentioned fixed body 1 is fixing pipe.Pass through
Spacing catch efficiently simply can carry out spacing to floating auxiliary.
Above-mentioned spacing catch can be welded in fixing pipe, can also be fixed in other way in fixing pipe,
Those skilled in the art can select suitable method that spacing catch is fixed in fixing pipe according to actual conditions.
In order to be further ensured that fixed body can keep good performance, the application in the long-time for immersing wastewater disposal basin
A kind of embodiment in, above-mentioned fixed body 1 is pvc pipe.
Certainly, the fixation body of the application is not limited to above-mentioned pvc pipe, and those skilled in the art can be according to actual feelings
Condition selects the fixation body of suitable material, and the length of pvc pipe determines according to the size of wastewater disposal basin.
In another embodiment of the application, above-mentioned floating auxiliary is iron hoop, and iron hoop can also be swum on the water surface, is used
The manufacture and installation of iron hoop are relatively simple, improve making and the installation effectiveness of the measurement apparatus.
In order to be further ensured that the tracks of pH electrodes are controllable, prevent pH electrodes from floaing with floating plate and ensure floating plate not
Thrown by strong wind, so as to improve the reliability and stability of measurement apparatus, in a kind of embodiment of the application, as shown in figure 3, on
It is tripping sleeve to state floating auxiliary 2, and above-mentioned floating main part 3 is floating plate, and above-mentioned floating plate is fixed close to the bottom of above-mentioned tripping sleeve
Set.
In the another embodiment of the application, above-mentioned tripping sleeve is PVC tripping sleeves, and the length of the tripping sleeve is less than
The length of above-mentioned fixed body 1, PVC tripping sleeves, which can be further ensured that in the long-time swum on liquid level, keeps preferable
Performance.
In order to preferably install fixation measuring portion, and ensure pH electrodes just as floating plate fluctuates and its measurement portion timesharing
Quarter is immersed in waste water, and liquid level is low again will not also to be separated with waste water, in a kind of embodiment of the application, as shown in figure 3, above-mentioned floating
A through hole 30 being adapted to above-mentioned measurement portion 41 is offered on the thickness direction of disk, above-mentioned through hole 30 is used to install above-mentioned measurement
Portion 41.
In another embodiment of the application, above-mentioned pH electrodes 4 are integral type Water-proof electrode, with conventional pH electrodes not
Together, it directly leads out a segment electrode line in measurement portion interface and carries out corresponding sealing waterproof measure, such energy in interface
Enough better ensure that the pH electrodes have the longer life-span, so as to ensure that the pH measurement apparatus has the longer life-span.
In order to preferably observe measured value, in a kind of embodiment of the application, as shown in figure 3, above-mentioned pH measurement assemblies are also
Including pH tables 6, removably electrically connected with above-mentioned pH electrodes 4.
In a kind of specific embodiment of the application, as shown in figure 3, above-mentioned pH electrodes 4 also include electrode wires 42 and first
Plug 43, one end of above-mentioned electrode wires 42 electrically connect with above-mentioned measurement portion 41, the other end of above-mentioned electrode wires 42 and above-mentioned first
Plug 43 electrically connects, above-mentioned pH tables 6 include table body 61, the plug 63 of wire 62 and second, one end of above-mentioned wire 62 with it is above-mentioned
Table body 61 electrically connects, and the other end of above-mentioned wire 62 electrically connects with above-mentioned second plug 63, above-mentioned first plug 43 with it is above-mentioned
Second plug 63 is integrated plug, and above-mentioned pH electricity is realized by the electrical connection of above-mentioned first plug 43 and above-mentioned second plug 63
Pole 4 and the electrical connection of above-mentioned pH tables 6, so can accomplish plug and play during pH electrodes are changed, very convenient.
In order that the technical scheme of the application can clearly be understood by obtaining those skilled in the art, below with reference to tool
The embodiment of body illustrates the technical scheme of the application.
Embodiment
The concrete structure schematic diagram of the pH measurement apparatus is shown in Fig. 3, and annexation is also shown in Fig. 3,
Wherein, the pvc pipe that fixed body 1 is external diameter 50mm, in tube bottom correct position (according to the precipitation feelings of wastewater disposal basin
Condition) welding one material be all PVC square spacing catch as locating part 5, pvc pipe is fixed on wastewater disposal basin bottom using support
Portion.
The tripping sleeve for the pvc pipe (internal diameter is more than 50mm) that floating auxiliary 2 is long 200m, external diameter is 63mm.
A screw thread is bored with surveying in the floating plate that floating main part 3 is an a diameter of 200mm, thickness is 35mm, floating plate middle
Floating plate, is welded on tripping sleeve by the through hole 30 that the sheath external screw thread in amount portion 41 matches by fixed part 31.
PH electrodes 4 use integral type waterproofing design, and measurement portion 41 is equipped with externally threaded sheath, measurement portion 41 and electrode wires
Epoxy encapsulation is used at 42 tie points, accomplishes thorough waterproof, the afterbody of electrode wires 42 connects the first plug 43 and (set for public plug
Meter), it can directly be docked with the second plug 63 (i.e. female) for being arranged on the one end of wire 62 of pH tables 6, realize plug and play.
The measurement portion 41 of pH electrodes 4 is screwed on floating plate and then tripping sleeve is entangled into pvc pipe, pH electrodes 4 are just with floating plate
Float and continuously measured on wastewater disposal basin liquid level.
The pH measurement apparatus is simple in construction, is easily installed fixation, and it is very convenient to change electrode during maintenance, has saved manpower thing
Power；Using this covering device, pH electrodes need not be installed in waste water conveying pump discharge main pipe, and pump is saved without playing circulation always
Many electricity, it is very economical；The floating type measuring method of the present apparatus can avoid pond compared to fixed measuring method
Liquid level is too low and probe is separated with industrial wastewater, it is ensured that continuous measurement；Present apparatus pH electrodes use integral type waterproofing design, nothing
The ambient humidity around measuring point need to be considered, its line trap, which designs, drastically increases the replacing efficiency of electrode, plug and play, both
Facilitate maintenance and extend the service life of pH table inner terminals.
As can be seen from the above description, the application the above embodiments realize following technique effect：
The above-mentioned pH measurement apparatus of the application is simple in construction, is easily installed fixation, and it is very convenient to change electrode during maintenance, section
About manpower and materials；Using the measurement apparatus, pH electrodes need not be installed in waste water conveying pump discharge main pipe, and pump is without always
Circulation is played, saves many electricity, it is very economical；The present apparatus can realize floating type measurement, and this measurement is compared to fixation
For the measurement of formula, waste water pit level can be avoided too low and measurement portion is separated with waste water, it is ensured that continuous measurement.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (11)
1. a kind of pH measurement apparatus, it is characterised in that the pH measurement apparatus includes:
Fixation kit, including fixed body (1)；
Floatation element, including floating auxiliary (2) and floating main part (3), the floating auxiliary (2) are set in the fixed body
(1) outside, the floating main part (3) are fixedly installed on the floating auxiliary (2)；And
PH measurement assemblies, including pH electrodes (4), the pH electrodes (4) include measurement portion (41), and the measurement portion (41) is arranged on
On the floating main part (3), the measurement portion (41) is used for the pH for measuring waste water.
2. pH measurement apparatus according to claim 1, it is characterised in that the fixation kit also includes：
Locating part (5), it is arranged on the fixed body (1) and positioned at the lower section of the floating auxiliary (2), the locating part
(5) it is used for floating auxiliary (2) described in backstop.
3. pH measurement apparatus according to claim 2, it is characterised in that the locating part (5) is spacing catch, described solid
It is fixing pipe to determine body (1).
4. pH measurement apparatus according to claim 1, it is characterised in that the fixed body (1) is pvc pipe.
5. pH measurement apparatus according to claim 1, it is characterised in that the floating auxiliary (2) is iron hoop.
6. pH measurement apparatus according to claim 1, it is characterised in that the floating auxiliary (2) is tripping sleeve, described
Floating main part (3) is floating plate, and the floating plate is fixedly installed close to the bottom of the tripping sleeve.
7. pH measurement apparatus according to claim 6, it is characterised in that the tripping sleeve is PVC tripping sleeves.
8. pH measurement apparatus according to claim 6, it is characterised in that one is offered on the thickness direction of the floating plate
The through hole (30) being adapted to the measurement portion (41), the through hole (30) are used to install the measurement portion (41).
9. pH measurement apparatus according to claim 1, it is characterised in that the pH electrodes (4) are integral type Water-proof electrode.
10. pH measurement apparatus according to claim 1, it is characterised in that the pH measurement assemblies also include：
PH tables (6), removably electrically connected with the pH electrodes (4).
11. pH measurement apparatus according to claim 10, it is characterised in that the pH electrodes (4) also include electrode wires
(42) electrically connected with the first plug (43), one end of the electrode wires (42) with the measurement portion (41), the electrode wires (42)
The other end electrically connected with first plug (43), the pH tables (6) include table body (61), wire (62) and the second plug
(63), one end of the wire (62) electrically connects with the table body (61), the other end and described second of the wire (62)
Plug (63) electrically connects, and first plug (43) and second plug (63) are integrated plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092566.7U CN207163961U (en) | 2017-08-29 | 2017-08-29 | PH measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092566.7U CN207163961U (en) | 2017-08-29 | 2017-08-29 | PH measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207163961U true CN207163961U (en) | 2018-03-30 |
Family
ID=61718799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721092566.7U Active CN207163961U (en) | 2017-08-29 | 2017-08-29 | PH measurement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207163961U (en) |
-
2017
- 2017-08-29 CN CN201721092566.7U patent/CN207163961U/en active Active
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