The “dual energy player” GRT1120C pH electrode measures pure water and viscous medium! Ordinary electrodes have slow response, poor stability, or frequent blockage, requiring maintenance, replacement of imported equipment, and incompatible interfaces for low conductivity pure water online detection or high viscosity suspensions and emulsions. A dual dielectric dual liquid interface construction and a novel glass sensitive film make it maintenance-free and anti-blocking. With variable lengths and dual sheaths, it is compatible with foreign equipment and meets the monitoring needs of pure water and complicated media, making measurement stable, accurate, and worry-free in diverse working settings.
★★★★★
Features
Specifications
| Parameter | Value |
|---|---|
| pH Range | 0-14 |
| Temperature Range | 0-60℃ |
| Pressure resistance | 0-0.4 |
| Zero potential | 7±0.5 |
| Theoretical percentage slope | ≥ 95 |
| internal resistance | ≤ 250 M Ω at 25 ℃ |
Core product advantages
- Dual scenario precise adaptation: capable of precise measurement in pure water low conductivity environments, as well as withstanding high viscosity suspensions and emulsions that are prone to clogging
- Blocking prevention and maintenance free: gel+solid double dielectric double liquid junction structure, no need to supplement electrolyte, not easy to be blocked by protein and suspended particles
- Fast response and strong stability: The new glass sensitive film design has low internal resistance, fast response, stable zero potential, and measurement data does not drift
- Universal and easy to replace: standard PG13.5 threaded socket, can be directly exchanged with foreign electrodes, no pressure when connecting new and old equipment
- Flexible and versatile installation: 120/150/200/250/300mm with multiple length options, 316L stainless steel/PP double sheath, suitable for different installation depths and medium characteristics
- Wide compatibility: can be used in conjunction with various acidity meters without additional adaptation, low replacement cost
Accurately adapting to the scene
- Online monitoring of pure water: always examining the pH levels in industrial pure water, ultrapure water manufacture, and circulating water. Even in low conductivity situations, the data is always accurate and quick to respond;
- Measurement of viscous media: pH detection of high viscosity suspensions, emulsions, and protein-containing liquids, with anti-blocking characteristics to stop media from adhering and blocking, so that measurements can be conducted all the time;
- In the past, pH was measured in the chemical, electronics, and food industries. You can utilize it in a lot of different places, such pipelines and containers with two sheaths or different lengths.

Usage and Maintenance Guide
- Daily cleaning: Rinse the electrode with distilled water before and after measurement, gently absorb moisture with filter paper, and avoid impurities from entering the measured medium; 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. It is strictly prohibited to dry it and cause the sensitive film to fail;
- Regular calibration: It is recommended to calibrate once a week with standard calibration solution. For pure water monitoring scenarios, the calibration cycle can be appropriately shortened to ensure measurement accuracy;
- 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

- After opening the packaging, check whether there is mechanical damage to the sensitive bulb and electrode body of the electrode;
- Remove the sensor protective cover and check if there are any bubbles in the sensitive bulb of the electrode. If so, gently shake the sensor in a vertical plane to remove the bubbles;
- Select the corresponding sensor sleeve or cable head for installation according to different electrodes;
- The connection between the sensor wire and the sensor 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.
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The GRT1120C pH electrode breaks down the equipment barrier for monitoring pure water and viscous media with its core advantages of “dual scene adaptation, anti blocking and maintenance free, and high compatibility”. From precise control of pure water production to continuous monitoring of viscous media, from imported equipment replacement to multi scenario installation adaptation, it can flexibly respond and stably output. The configuration of multi length and double sheath meets different installation needs, and the standard thread reduces replacement costs, allowing complex pH measurement to bid farewell to adaptation difficulties and maintenance troubles.
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