The HF1120-S8 pH sensor, with its special sensitive film and anti blocking structure design, solves the problem of the glass film of conventional pH sensors being easily eroded and ineffective by fluoride ions in corrosive media containing hydrofluoric acid (HF). Specially designed for media containing HF, it can withstand fluoride ion concentrations at different pH values, and has the advantages of maintenance free and high compatibility, providing stable and accurate data support for pH monitoring in strong corrosion scenarios.
★★★★★
Features
Specifications
| Parameter | Value |
|---|---|
| pH Range | 0-14 |
| Temperature Range | 0-60℃ |
| Pressure Range | 0-0.3 M Pa |
| Zero potential | 7±0.5 |
| Theoretical percentage slope | ≥ 95% |
Core product advantages
HF resistant strong corrosion:
Special sensitive film design, can work stably in hydrofluoric acid containing media, with clear fluoride ion tolerance concentration at different pH levels (F ⁻<300ppm at pH 2,<1000ppm at pH 3, etc.), avoiding fluoride ion erosion of glass film and causing failure;
Blocking prevention and maintenance free:
gel dielectric+two-point ceramic core liquid interface, suitable for corrosive media containing impurities, not easy to block and no need to supplement dielectric, only basic cleaning and calibration are needed daily;
International universal compatibility:
S8 socket+PG13.5 standard thread, can be directly exchanged with foreign electrodes, supports 316L stainless steel/PVC sheath, suitable for different corrosion scenarios and imported equipment;
Flexible selection of multiple specifications:
120/150/200/250/300mm length options are available to meet different installation depth requirements, ensuring that the sensor bulb and liquid junction are submerged in the measured liquid simultaneously.
Accurately adapting to the scene
Core application scenarios
HF containing chemical production monitoring: pH detection of reaction solutions and waste liquids containing hydrofluoric acid in the chemical industry, such as fluorine chemical and pharmaceutical intermediate synthesis scenarios, to withstand fluoride ion corrosion and ensure accurate process control data;
Electronic industry etching solution monitoring: real-time monitoring of pH of HF etching solution in semiconductor and circuit board production, adapting to etching process parameter adjustment to avoid affecting product accuracy due to pH abnormalities;
HF containing wastewater treatment: pH monitoring in the industrial hydrofluoric acid containing wastewater treatment process ensures that the acid-base neutralization meets the standards during the wastewater treatment process, avoiding the discharge of highly corrosive wastewater and polluting the environment.
Usage and Maintenance Guide
- Before measurement, clean the sensor with distilled water and absorb the moisture to ensure that the bulb and the liquid junction are submerged in the measured liquid at the same time, avoiding impurities from entering and affecting the data;
- Soak in 3.3Mol/L KCL solution when idle, and avoid long-term immersion in distilled water, protein solution, or acidic chloride solution. Keep away from organic silicon oils and fats;
- Clean and calibrate once a week, wash the glass film sediment with dilute hydrochloric acid, and prohibit scratching the sensitive film with a hard brush;
- Strictly follow the HF concentration resistance specifications to avoid sensor damage caused by over concentration and over temperature conditions.
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 HF1120-S8 pH electrode has the core advantage of being resistant to hydrofluoric acid corrosion, and is designed with anti blocking, maintenance free, and high compatibility features to accurately adapt to the special monitoring needs of HF containing media. If the standardized usage and maintenance process is followed, accurate data can be output stably for a long time, providing reliable support for process control and environmental compliance in strong corrosion scenarios.
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