Analog PH Electrode Suitable For Water Purification >5μS/Cm
Daruifuno Ultimate Custom High-Temperature or Normal temperature pH Electrode ASP122E: Engineered for Extreme Industrial Environments
For process engineers and maintenance professionals dealing with the toughest measurement challenges, a standard pH sensor simply won't survive. This article introduces our specialized, customizable industrial pH electrode, expertly designed to deliver stable, high-accuracy measurements across extreme temperatures, pressures, and in chemically complex media.
Why Choose a Double-Junction, High-Temperature pH Probe?
In demanding industrial applications—such as wastewater treatment, chemical processing, sterilization, and boiler feed water monitoring—the electrode's reference system is the most critical point of failure.
Our probe features an advanced design to overcome these common issues:
Double Salt Bridge (Ag/AgCl Reference): The double junction configuration utilizes a KCl gel to create a protective barrier. This significantly isolates the inner reference system from the sample media, preventing contamination by poisoning ions like sulfides, heavy metals, or proteins that cause standard electrodes to fail quickly. This makes it an ideal pH sensor for complex environments.
Low Impedance Glass Membrane: A low impedance cylindrical glass membrane ensures rapid response times and superior measurement stability, even in low-conductivity samples.
Robust Ceramic Junction: The electrode body is constructed from Glass and features a specialized Dot-shaped ceramic hole. This unique junction minimizes electrolyte outflow while resisting clogging, providing reliable electrical contact in dirty or viscous solutions.
Technical Specifications for Seamless Integration
Beyond its durability, this industrial pH probe meets strict performance and integration requirements for professional use:
Installation Standard: Features the industry-standard PG13.5 mounting thread, allowing for simple drop-in replacement or new installation into process lines or submersible housings.
Optimal Flow Rate: Designed to operate effectively with sample flow rates from a minimum of 0.001 m/s up to 0.5 m/s.
Signal Quality: Guaranteed high accuracy with a Slope greater than 95% and a Zero Point(E 0) of ±0.25 pH.
Built-in Temperature Compensation: Integrates an automatic temperature compensation (ATC) sensor, which is essential for accurate pH reading correction across its wide thermal range. Customizable options include PT100, PT1000, or NTC10K.
Physical and Electrical Customization: Standard dimensions are Diameter 12mm/Length 120mm, with custom sizing available. Connectivity is flexible, offering both integrated (fixed cable) or detachable (split) lead connections to suit your specific transmitter or wiring needs.
This specialized, custom analog pH sensor is your reliable partner for achieving consistent, accurate, and low-maintenance pH monitoring in the most demanding industrial environments.
Specifications
| Model | ASP120E | ASP121E | ASP122E | ASP123E | ASP124E |
| Measuring Object | PH |
| Measuring Range | 0~14pH |
| Indicator Electrode | low impedance cylindrical glass membrane |
| Reference System | Ag/AgCl reference electrode, double salt bridge, KCl gel |
| Electrode Material | Glass+Dot-shaped ceramic hole | Glass+Porous tetrafluoro ring | Glass+ceramic sand core |
| Working Pressure | Medium and low temp environment: max. 0~6bar High temp environment: 0~3bar |
| Working Temp. | Medium and low temp. environment: 0~80℃, continuous work High temp. environment: 80~100℃, continuous work for less than 60 minutes Customzied as below : Medium and low temp. Env.: 0~100℃, continuous work High temp. Env.: 100~135℃, continuous work < 60 mins High temp. Env. work more than 40 times (clean water test env.) |
| Sample Flow Rate | 0.5 m/s ≥ flow velocity ≥ 0.001 m/s |
| Zero (E0) | ±0.25pH |
| SLOP% | ＞95% |
| Temperature Unit | PT100, PT1000, NTC10K customized |
| Dimension | Standard: diameter 12mm/Length 120mm (customized) |
| Installation Thread | PG13.5 |
| Tail Lead | Integral or split |
| Application | Strong acid and alkali | Normal temp. pure water >5μS/cm | Harsh industrial process* | Normal temp. desulfurization or viscous slurry | Hydrofluoric acid with concentration ≤4000ppm |
| Model | ASP125E | ASP126E | ASP127E | ASR120E | ASP128E |
| Measuring Object | PH | ORP | PH |
| Measuring Range | 0~14pH | ±2000mV | 0~14pH |
| Indicator Electrode | low impedance cylindrical glass membrane | Platinum | glass membrane |
| Reference System | Ag/AgCl reference electrode, double salt bridge, KCl gel |
| Electrode Material | Glass+ceramic sand core |
| Working Pressure | Medium and low temp environment: max. 0~6bar High temp environment: 0~3bar | max. 0~6bar |
| Working Temp. | Medium and low temp. environment: 0~80℃, continuous work High temp. environment: 80~100℃, continuous work for less than 60 minutes Customzied as below : Medium and low temp. Env.: 0~100℃, continuous work High temp. Env.: 100~135℃, continuous work < 60 mins High temp. Env. work more than 40 times (clean water test env.) | -15~80℃, continuous work |
| Sample Flow Rate | 0.5 m/s ≥ flow velocity ≥ 0.001 m/s |
| Zero (E0) | ±0.25pH |
| SLOP% | ＞95% |
| Temperature Unit | PT100, PT1000, NTC10K customized |
| Dimension | Standard: diameter 12mm/Length 120mm (customized) |
| Installation Thread | PG13.5 |
| Tail Lead | Integral or split |
| Application | Strong acid and alkali | Harsh conditions &high pollution | Fermentation process | High temp. Industrial process | Low temp. |
Features & Advantages
- Large capacity reference for extended service life
- Optional cleaning connector for underwater maintenance
- Available with PTFE protective cover and self-cleaning interface
- Self-cleaning function enhances stability, accuracy, and reliability while reducing maintenance costs
- Suit for Pure Water >5μS/Cm
The ASP121E glass pH sensor offers ultimate flexibility with custom mounting accessories for pure water environment:
- Sidewall Mounting: Ideal for large tanks and vessels
- Top Flange Mounting: Perfect for sealed reactors
- Pipe/Flow Cell Mounting: For in-line measurements
- Submersible Mounting: For open tanks and channels
- Manual Retractable Holder: Enables maintenance without process shutdown
Enhanced Durability with PTFE Sheath
The optional PTFE (Teflon) sheath. Featuring 3/4" NPT threads for easy attachment to mounting accessories, it ensures seamless integration across various applications.
Application For Pure Water >5μS/Cm
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Customized Analog PH Sensor For Complex Acid And Alkali Water Images
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