JIRS Industrial pH Sensor Online pH Electrode for Wastewater Treatment Water Quality Monitoring 0 to 14 pH
JIRS pH sensors are reliable, low-maintenance pH combination electrodes designed for continuous online water quality monitoring. Each sensor integrates a pH-sensitive glass membrane with a silver/silver-chloride reference electrode in a gel-filled system, providing stable measurement across the full 0–14 pH range with slope ≥95 % and drift ≤0.02 pH per 24 hours.
The gel electrolyte salt bridge eliminates the need for periodic electrolyte refilling and effectively prevents electrode poisoning. An anti-fouling circular PTFE diaphragm (ceramic sand core on the GP-400G) resists clogging for extended service life, while the low-impedance sensitive glass membrane ensures a 5-second response and good thermal stability.
Reliable, Accurate, Durable Monitoring
Experience precise water quality monitoring with the JIRS Industrial pH Sensor, designed to deliver reliable, low-maintenance performance in wastewater treatment and various water applications. Featuring a gel-filled system that eliminates the need for electrolyte refilling and an anti-fouling diaphragm for extended service life, this sensor offers a full 0 to 14 pH range with exceptional accuracy and rapid response times. With versatile installation options and temperature compensation models, the JIRS pH Sensor ensures seamless integration into your operations for optimal water management.
| Parameter | GP-100 | GP-100T | GP-100 PTFE | GP-100T PTFE | GP-400G |
|---|---|---|---|---|---|
| Sensor Type | pH combination electrode, no TC | pH combination electrode, with TC | pH combination electrode, no TC | pH combination electrode, with TC | Glass-body pH combination electrode |
| Measuring Range | 0–14 pH | 0–14 pH | 0–14 pH | 0–14 pH | 0–14 pH |
| Temperature Range | 0–60 °C | 0–80 °C | 0–120 °C | 0–120 °C | 0–100 °C |
| Pressure Range | 0–0.4 MPa | 0–0.4 MPa | 0–0.6 MPa | 0–0.6 MPa | 0–0.4 MPa |
| Accuracy | ±0.01 pH | ±0.01 pH | ±0.01 pH | ±0.01 pH | ±0.1 pH |
| Equipotential Point | 7 ± 0.5 pH | 7 ± 0.5 pH | 7 ± 0.5 pH | 7 ± 0.5 pH | 7 ± 0.5 pH |
| Slope | ≥ 95 % | ≥ 95 % | ≥ 95 % | ≥ 95 % | ≥ 95 % |
| Drift | ≤ 0.02 pH/24 h | ≤ 0.02 pH/24 h | ≤ 0.02 pH/24 h | ≤ 0.02 pH/24 h | ≤ 0.02 pH/24 h |
| Reference Resistance | ≤ 250 MΩ | ≤ 250 MΩ | ≤ 250 MΩ | ≤ 250 MΩ | ≤ 500 MΩ |
| Response Time | 5 sec | 5 sec | 5 sec | 5 sec | 5 sec |
| Body Material | ABS | ABS | PTFE | PTFE | High-temperature glass |
| Diaphragm | Circular PTFE | Circular PTFE | Circular PTFE | Circular PTFE | Ceramic sand core |
| Process Connection | 3/4″ BSP (NPT optional) | 3/4″ BSP | 3/4″ BSP | 3/4″ BSP | Pg 13.5 |
| Temp. Compensation | No | PT1000 / PT100 / NTC 10K | No | PT1000 / PT100 / NTC 10K (optional) | No |
| Max. Flow Rate | ≤ 3 m/s | ≤ 3 m/s | ≤ 3 m/s | ≤ 3 m/s | ≤ 3 m/s |
| Cable | 5 m, pin or BNC | 5 m, pin or BNC | 5 m, pin or BNC | 5 m, pin or BNC | 5 m, pin or BNC |
| Installation | Piping or submersible | Piping or submersible | Piping or submersible | Piping or submersible | Plug-in |
| Protection Cover | — | — | — | — | PTFE, Pg 13.5 inner / 3/4″ NPT outer |
| Key Applications | Environmental monitoring, wastewater, chemical process | Water treatment, chemical process with ATC | High temp, strong acid/alkali, corrosive | High temp corrosive with ATC | Chemical process, wastewater |