DURABLE pH SENSOR：GRT1130-K9

The GRT1130-K9 pH sensor is a high-temperature wastewater and complicated media “anti manufacturing monitoring officer”! Electrodes can be “poisoned” by ions, blocked by contaminants, or unable to sustain high temperatures, making maintenance laborious and expensive for online detection of high-temperature wastewater, colloidal media, or poisonous ions like S ² ⁻ and CN ⁻. The gel electrolyte salt bridge and high-temperature two-point ceramic core fluid interface are anti-virus, anti-blocking, and temperature-resistant. The electrolyte-free system reacts immediately. Its standard interface and double connector design make it ideal for high-temperature sewage monitoring and makes complex operating circumstances easy to measure.

★★★★★

  • Short delivery time
  • Better price
  • Customizable parameters

Features

  • The special gel electrolyte enables the electrode to withstand a voltage of 0.3 MPa without applying reverse bias;
  • Easy to use, no need to replenish electrolytes;
  • The gel electrolyte salt bridge can effectively prevent sensor poisoning;
  • Equipped with a high-temperature two-point ceramic core liquid junction, it resists clogging and enables long-term online detection;
  • Special material sensor sensitive membrane, applicable for pH measurement under various conditions;
  • The sensor has low internal resistance, fast response, and excellent stability;
  • Adopts the standard PG13.5 thread, suitable for pipeline installation and use with sensor protective sleeves.

Specifications

ParameterValue
pH Range0-14
Temperature Range0-100℃
Pressure Range0-0.3 M Pa
Zero potential7±0.5
Theoretical percentage slope≥ 95%

Core strength

  • Antitoxic without failure: special gel electrolyte salt bridge design can effectively resist the corrosion of toxic ions such as S ² ⁻ and CN ⁻, and avoid electrode poisoning
  • Anti blocking and high temperature resistance: High temperature two-point ceramic core liquid interface, not easily blocked by impurities in sewage, can be detected online for a long time in a high temperature environment of 0-100 ℃
  • Maintenance free and convenient: special gel electrolyte is pre charged at one time, and there is no need to supplement the whole process, greatly reducing the on-site operation and maintenance workload
  • Stable and fast response: The electrode has low internal resistance, and when facing high-temperature wastewater and colloidal media, the data response is fast and stable, with a zero potential of 7 ± 0.5mV
  • Wide installation adaptability: standard PG13.5 thread, supports pipeline installation or sleeve matching, compatible with various acidity meters
  • Dual compatibility of connectors: using BNC standard connectors or pin type wiring terminals to adapt to different device interfaces without the need for additional adapters

Adaptation scenario:

  • Online monitoring of high-temperature wastewater: continuous monitoring of pH in industrial high-temperature wastewater and biochemical treated high-temperature wastewater, with anti toxic and anti blocking design to deal with toxic ions and suspended impurities in water;
  • Colloidal medium measurement: Accurately measure the pH value of various colloidal raw materials and colloidal chemical wastewater. The special sensitive membrane material avoids medium adhesion and measurement does not drift;
  • Monitoring of toxic ion media: capable of dealing with industrial wastewater containing S ² ⁻, CN ⁻ and other substances that are prone to electrode poisoning. Salt bridges effectively isolate toxic ions and extend their service life;
  • Conventional industrial monitoring: pH monitoring of conventional high-temperature conditions in industries such as chemical, metallurgical, printing and dyeing, compatible with pipeline installation or container installation, and suitable for continuous production needs;

Maintenance

  • Daily cleaning: Rinse the electrode with distilled water before and after measurement, gently absorb moisture with filter paper to avoid residue of viscous media;Deep cleaning once a week to clear the liquid interface;
  • Sediment treatment: When the glass film appears semi transparent or adhered, soak it in dilute hydrochloric acid for 5-10 minutes, rinse with clean water, and do not scratch it with hard objects;
  • Idle storage: After washing, put on a protective cover containing 3.3Mol/L KCL solution and place it in a dry and ventilated place. Dry storage is strictly prohibited from causing the sensitive film to fail;
  • Regular calibration: It is recommended to calibrate once a week with standard calibration solution to ensure measurement accuracy; In scenarios with high levels of viscous media or impurities, calibration can be shortened to every 3-4 days;
  • Taboo: Avoid long-term immersion in distilled water, protein solutions, or acidic chloride solutions, stay away from organic silicon oils and fats, and prevent electrode performance degradation.

Sensor diagram illustration

120mm 40mm
  1. After opening the packaging, check whether there is mechanical damage to the sensitive bulb and electrode body of the sensor.
  2. Remove the sensor protective cover and check if there are any bubbles in the sensitive bulb of the electrode. If so, gently shake the electrode in a vertical plane to remove the bubbles;
  3. Select the corresponding sensor sleeve or cable head for installation according to different sensors;
  4. The connection between the sensor wire and the electrode is not waterproof, please make sure to do a good job of waterproofing.

Wire stripping instructions

Attention

  • The outer layer of the transparent central axis is covered with a conductive rubber layer and a metal mesh layer. When stripping, first strip the metal mesh layer into the metal mesh as shown in the picture, and be sure to removal of conductive black skin on the transparent central axis;
  • The cable extends to the host without any contact points except for a dedicated junction box.

Technical Support

The core lies in special materials and structural design! The electrode is connected by a special gel electrolyte that is resistant to high temperature and a high temperature two-point ceramic core liquid, which can withstand a high temperature environment of 0-100 ℃ and will not suffer electrolyte loss, junction blockage or performance degradation due to temperature rise. Compared to ordinary electrodes, its material has stronger heat resistance and better structural sealing, fully adapting to the monitoring needs of high-temperature wastewater.

The pores at the high-temperature two-point ceramic core liquid interface are more uniform and have stronger high-temperature resistance, which can effectively block the adhesion of suspended particles and colloidal impurities in high-temperature wastewater. It is also less prone to blockage even when online for a long time; Ordinary junctions are prone to deformation in high-temperature environments, and the pores are easily filled with impurities, resulting in slow or even ineffective measurement response. At the same time, the two-point design increases the ion conduction area, further enhancing the anti blocking ability and measurement stability.

The key difference lies in the anti toxicity performance! The special gel electrolyte salt bridge not only has the advantage of “no supplement” for ordinary gel electrolytes, but also specially adds antitoxic ingredients, which can form an ion barrier, effectively resist the erosion of toxic ions such as S ² ⁻, CN ⁻ on the electrode, and avoid electrode poisoning failure. In sewage containing toxic ions, its service life and stability are significantly improved compared with ordinary gel electrolyte electrode.

It’s fine to use it for a short while, but not for a long time! High temperatures can speed up the process by which proteins stick to electrode junctions and sensitive membrane surfaces. Long-term use can cause junction obstruction, delayed reaction, and potentially shorten the life of the electrode. If you need to use it for a long time, you should clean it every 3 to 4 days instead of every day. Each time, you should use neutral detergent to clean it, rinse it with distilled water, and then calibrate it.

5 Best carbon monoxide detector for garage

Posted on
Carbon monoxide (CO) poisoning represents one of the most insidious dangers in residential and commercial garages, responsible for hundreds of deaths and thousands of hospitalizations annually in the United States…

10 Best carbon monoxide monitor for industrial use 2025

Posted on
1. Why Industrial CO Monitoring is Critical Carbon monoxide (CO) presents one of the most significant hazards in industrial environments. As a colorless, odorless, and tasteless gas, CO can accumulate…

7+ Best Recommended Carbon Monoxide Detector for Industrial Use

Posted on
Finding the most Recommended carbon monoxide detector for industrial environments in 2025 requires a careful evaluation of accuracy, durability, explosion-proof design, and multi-gas compatibility. Industrial workplaces—such as petrochemical plants, refineries,…

6 Types of Industrial Oxygen Sensors

Posted on
Introduction to Types of Industrial Oxygen Sensors Industrial oxygen sensors play a critical role in monitoring and controlling oxygen levels across multiple sectors, including manufacturing, chemical processing, healthcare, and environmental…

6 Best Industrial Gas Detector Manufacturers in the World

Posted on
With industrial safety standards becoming more stringent each year, organizations worldwide are investing in high-precision gas detection technologies. Choosing the Best industrial gas detector manufacturers ensures operational safety, regulatory compliance,…

The GRT1130-AS7 pH electrode, with its core advantages of “dual interface universality, multi degree adaptation, and anti blocking and maintenance free”, perfectly solves the adaptation problems and blockage pain points in viscous medium monitoring. From continuous monitoring of sewage treatment to process control in the electroplating industry, from production of viscous media to replacement of imported equipment, it can flexibly adapt and stably output accurate data. The flexible configuration of dual interfaces, multiple lengths, and dual sheaths not only reduces the cost of replacing imported electrodes, but also meets the installation needs of different scenarios.

Consultation now provides exclusive selection solutions, installation guidance, and maintenance skills, allowing complex media pH measurement to bid farewell to adaptation and blockage troubles, and helping production processes operate efficiently and quality control be accurately implemented!

Request a Quote

Shop Products