pH electrodes/ORP electrodes
Features
- Adopt international advanced solid dielectric and large area PTFE liquid junction, easy maintenance
- Long distance reference diffusion path, extends electrode life greatly in harsh environments
- Electrodes is made of high quality low-noise cable, make signal output length greater than 40 meters or more, without interference
- High accuracy, fast response, good repeat-ability
- With silver ions Ag / Ag-Cl reference electrode
- Side or vertically installation to the reaction tank or pipe
- Electrode can be used interchangeably with similar electrodes
Applications
- Wastewater
- Wet Wells
- Oil tanks
- Sumps
- Reservoirs
- Industrial wastewater
- Electroplating plants
- Paper industry
- Drinking water
Product overview
pH electrode is a high-quality sensor for the analysis and measurement of liquid components during industrial automation. These electrodes are known for their use of top-quality materials and components. They are designed as combined electrodes (the measuring electrode and the reference electrode are combined in one shaft).The temperature probe can also be integrated as an option.
Technical indicators
| p51 |
Plastic pH electrode |
2-14pH |
0-60ºC |
| p53A |
PTFE pH electrode |
0-14pH |
0-60ºC |
| p54 |
Glass pH electrode |
0-14pH |
0-130ºC |
| p55 |
High Temperature Glass |
0-14pH |
0-130ºC |
| p56 |
pH electrode |
0-14pH |
0-80/>100ºC |
| p57 |
Plastic pH electrode |
0-14pH |
0-130ºC |
| p58 |
Glass pH electrode |
0-14pH |
0-100ºC |
| p59 |
Glass pH electrode |
0-14pH |
0-80ºC for general cables |
| p52 |
Glass pH electrode |
0-14pH |
0-130ºC |
| p61 |
Plastic pH electrode |
2-12pH |
0-80ºC |
| p62 |
Glass pH electrode |
0-14pH |
0-100ºC |
| p71 |
Desulfurization electrode |
0-14pH |
5-80ºC |
| p72 |
Plastic pH electrode |
0-14pH |
5-80ºC |
| p73 |
Plastic pH electrode |
2-12pH |
5-80ºC |
| O61 |
Glass ORP electrode |
-2000mV-2000mV |
0-80ºC |
| O60 |
Plastic ORP electrode |
-2000mV-2000mV |
0-60ºC |
p51
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Zero potential point: 7±0.25
Conversion coefficient:≥95% Membrane resistance: <500Ω
Practical response time:< 1 min Reference: Ag/AgCl
Pressure resistance: 4 bar at 25 ºC
Thread Connection: 3/4NPT Material: PPS/PC
Application
Suitable for general industrial waste water
and discharge solutions
- Technical parameters
- Temperature compensation: Pt100/Pt1000/NTC10K Zero potential point: 7±0.25
Conversion coefficient: ≥95% Membrane resistance: <500Ω Practical response time: < 1 min
Salt bridge:Cyclic tetrafluoro salt bridge Reference: Ag/AgCl
Pressure resistance: 0.3MPa Thread Connection: 3/4NPT Material: PTFE
- Application
- Low-impedance glass sensitive film, wear-resistant, strong acid and alkali resistant, with protection ring in the the front to protect glass bulb and better precision and linearity.
p54
Technical parameters
zemperature compensation: Pt100/Pt1000/NTC10K
HF acid concentration range:≤4000ppm Electrode interface: S8, VP, K2, etc. Zero potential point: 7 ± 0.5 pH Conversion coefficient: > 98% Membrane resistance: <50, 250ΜΩ Practical response time: < 1 min
Salt bridge: Ceramic salt bridge Pressure resistance: 0.25MPa Thread Connection: PG13.5 Reference:Ag/AgCl
Application
In the dilution control of hydrofluoric acid in semiconductor wafer fabrication and chip production; determination of pH value in petrochemical industry, iron and steel production wastewater and other strong corrosive systems.
p55
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Connector: VP, S8M, K2, etc.
Zero potential point: 7 ±0.5 pH Conversion coefficient: > 98% Membrane resistance: general: <250ΜΩ Practical response time: < 1 min
Salt bridge: Ceramic salt bridge Pressure resistance: 0.25MPa Thread Connection: PG13.5 Reference:Ag/AgCl Material:Glass
Application
In various chemical processes including microbial technology, pharmaceuticals, food and beverages, sugar manufacturing, chlor-alkali, mining and smelting, paper pulp, textiles, petrochemical industry and
semiconductor electronic industry as well asfields such as wastewater treatment.
p56
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Zero potential point: 7 ± 0.5 pH
Conversion coefficient: > 98% Membrane resistance: <250ΜΩ Practical response time: < 1 min
Salt bridge: salt bridge porous Teflon Pressure resistance: 1 ~ 6 Bar at 25 ºC Thread Connection: 3/4NPT
Application
In wastewater treatment and in the fields including mining and smelting, papermaking, paper pulp, textiles, petrochemical industry, process of semiconductor electronic industry, and downstream engineering of biotechnology.
p57
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Connector: VP, S8M, K2, etc.
Zero potential point: 7 ± 0.25 pH Conversion coefficient: > 98% Membrane resistance: <600ΜΩ Practical response time: < 1 min
Pressure resistance: up to 6 Bar at 25 ºC
Thread Connection: PG13.5
Application
In various chemical processes including chlor-alkali, mining and smelting, papermaking, paper pulp, textiles, petrochemical industry and semiconductor electronic industry as well as fields such as biotechnology and wastewater treatment.
p58
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Pressure resistance: 0.25MPa
Connector: VP, S8M, K2, etc. Zero potential point: 7 ± 0.5 pH Conversion coefficient: > 98%
Membrane resistance: general: <250ΜΩ Practical response time: < 1 min
Salt bridge: Porous ceramic core/ porous Teflon Thread Connection: PG13.5
Application
In various chemical processes including microbial technology, pharmaceuticals, food and beverages, sugar manufacturing, chlor-alkali, mining and smelting, papermaking, paper pulp, textiles, petrochemical industry and semiconductor electronic industry as well as fields such as sewage treatment
p59
Technical parameters
Temperature compensation: 10 KΩ/2.252KΩ/Pt100/Pt1000
Zero potential point: 7 ± 0.5 pH Conversion coefficient: > 98% Membrane resistance: <250ΜΩ Practical response time: < 1 min Salt bridge: Ceramic salt bridge
Pressure resistance: 0.1 MPa~0.3 MPa at 25 ºC
Thread Connection: 3/4NPT Material:Nylon 66 mixed glass fiber
Application
In sewage treatment and fields including mining and smelting, papermaking, paper pulp, textiles, petrochemical industry, process of semiconductor electronic industry and downstream engineering
of biotechnology.
p52
Technical parameters
Zero potential point:7 ± 0.5 pH Conversion coefficient: > 96% Installation size: PG13.5
Pressure: 1 ~ 6 Bar at 25 ºC
Temperature: 0 ~ 130ºC for general cables Thread Connection:K8S
Application
Industrial wastewater engineering including process measurements, electroplating plants, paper and drinks industry , wastewater containing oil. Suitable for suspensions, varnishes, media containing solid particles and media containing fluorides (hydrofluoric acid) up to 1000 mg/l HF.
p61
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Pressure resistance: 0.4MPa
Reference: Ag/AgCl
Thread Connection: 3/4NPT
Salt bridge: Cyclic tetrafluoro salt bridge Material:ABS
Application
In various chemical processes including water treatment, waste gas treatment, aquaculture and dosing equipment supporting.
p62
Technical parameters
Measurement range:(0~14) pH Temperature range:(0~100)ºC Pressure resistance:0.6MPa Zero potential point:Eo=7pH
Electrode size: φ12x120, 225 or other sizes Thread: PG13.5, international standard Electrode outer tube material: glass
Wire: 5 meters (standard),optional
Temperature compensation resistance: Pt100, Pt1000, 2.252K, 10K, 22K, etc
Application
In various chemical processes including microbial technology, pharmaceuticals, food and beverages, sugar manufacturing, chlor-alkali, mining and smelting, papermaking, paper pulp, textiles, petrochemical industry and semiconductor electronic industry as well as fields such as sewage treatment
p71
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Pressure resistance: 0.4MPa
Reference: Ag/AgCl
Thread Connection: 3/4NPT Salt bridge: Ceramic salt bridge Material:PPS
Application
In various chemical processes including high suspended solids solution, lime pool and mining.
p72
Technical parameters
Temperature compensation: Pt100/Pt1000/NTC10K Pressure resistance: 0.4MPa
Reference: Ag/AgCl
Thread Connection: 3/4NPT
Salt bridge: Cyclic tetrafluoro salt bridge
Material:PPS
Application
In various industrial processes including sewage and waste gas treatment and fields.
p73
Technical parameters
Measuring range: (2~12)pH Temperature range: (5~80)ºC Pressure resistance: 0.6MPa
Temperature compensation type: NTC10K, PT100, PT1000
Reference type: Ag/AgCl
Salt bridge: Cyclic tetrafluorosalt bridge Mounting thread: 3/4NPT
Shell material: PPS
Application
The industrial pH electrode adopts a ring-type polytetrafluoroethylene liquid junction, a solid electrolyte and a special glass sensitive membrane, which enhances the electrode reaction speed and anti-pollution ability
O61
Technical parameters
Thread Connection: BNC Material: Glass
Socket: S8
Application
In various industrial processes including water treatment, pure water industry, power plants, etc.
O60
Technical parameters
Zero potential point: 7 ± 0.5 pH Conversion coefficient: > 96% Pressure resistance: ≤0.6MPa Thread Connection: 3/4NPT
Application
In various industrial processes including sewage and waste gas treatment and fields.
Installation of electrode
Schematic diagram of common installation method
1. Side wall installation
2. Flange mounted at the top
3. Pipe installation
4.Top installation
5.Submersible installation
6.Flow-through installation
The interface must be in 5 oblique angle,or it will affect the normal test and use of the electrode.We won't be responsible for any results due to this.
pH Calibration:
A pH calibration is the procedure of adjusting the pH meter by measuring solutions of known pH values.
The characteristic of a pH electrode will change with time due to electrode coating and aging. And even a pH electrode would be stable over time, pH electrodes cannot be produced with identical characteristics.
In practice the response of a real pH sensor does not exactly follow the Nernst equation. This difference between the theoretical and actual behavior of a pH electrode must be compensated for. A calibration is required to match the pH meter to the current characteristics of the used pH sensor.
To achieve the best possible accuracy, the calibration should cover the range of the desired measurement values. If the readings go beyond the calibrated range, the pH meter assumes linearity and simply extrapolates the value to be displayed. The true value may be slightly different.
More advanced pH meters will let the user calibrate at three, four or five and even higher numbers of pH values. A multi-point calibration mean, in comparison to a two-point calibration, that you can calibrate your pH tester on both sides of the zero point (pH 7.00). This will expand your pH measurement range without the need of recalibrating.
Electrode slope: The slope of the glass electrode is 59.16 mV at 25 ºC theoretically, i.e. potential change of
59.16 mV for each pH change in the solution. But in fact, neither glass electrode can reach the theoretical value 100%; in general, the electrode slope is more than 98% of the theoretical value (percentage slope). In addition, the mV difference corresponding to each unit pH value varies under different temperatures. The conversion of temperature to electric potential difference is as follows:
△E=59.16*[(273+T)/298]*△pH
Corresponding relationship between pH and millivolt at 25ºC
| Potentiometer(mV) |
pH |
Potentiometer(mV) |
pH |
| 414.12 |
0.00 |
-414.12 |
14.00 |
| 354.96 |
1.00 |
-354.96 |
13.00 |
| 295.80 |
2.00 |
-295.80 |
12.00 |
| 236.64 |
3.00 |
-236.64 |
11.00 |
| 177.48 |
4.00 |
-177.48 |
10.00 |
| 118.32 |
5.00 |
-118.32 |
9.00 |
| 59.16 |
6.00 |
-59.16 |
8.00 |
| 0.00 |
7.00 |
0.00 |
7.00 |
Wotian reserves the right to make any change in this publication without notice. The information provided is believed to be accurate and reliable as of this product sheet.
About Us:
Certifications:
FAQ:
1. Q: Are you manufacturer or trading company?
A: We are manufacturer which focuses on pressure sensor for 33 years.
2. Q: What international certificates do you have?
A: ISO9001, CE, RoHS Certificated.
3. Q: What is your production capacity?
A: We produced 1500000 pieces pressure sensor in year 2017.
4. Q: What is the lead time of your product?
A: Stocks are available for some products. The typical lead time is 8~14 working days for product without customization.
Note: lead time may vary base on different products. Please contact us for detailed lead time.
5. Q: What is the warranty of your products?
A: Our warranty time is 18 months after shipment.
6. Q: Do you provide customized products?
A: Yes, we can laser mark your logo, model and product information according to your requirement. We provide OEM and ODM service.
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