S401 DIG/N & S406 DIG/N
DIGITAL PH AND ORP SENSORS
FEATURES
- Teflon® porous septum's liquid junction resists encrustations and chemical attack.
- Reference electrode's double junction increases service life in applications containing sulphides (H2S) and metals such as lead, mercury and silver
- New solid-state electrolyte allows a constant reference potential over time even during pressure and temperature variations
- Pt100 capillary temperature sensor is positioned behind sensitive membrane (pH or ORP) for accurate temperature measurement and compensation
- IP68 rated for protection of high-impedance electrodes from condensation
APPLICATIONS
- Drinking water
- Process water
- Wastewater
- Samples containing sulphides and metals such as mercury, lead and silver.
TECHNICAL SPECIFICATION
| Feature | S401 DIG/N | S406 DIG/N |
|---|---|---|
| Measurement Range | 0...14 pH, -1500 mV...+1500 mV | 0...14 pH, -1500 mV...+1500 mV |
| Measurement Method | Potentiostatic | Potentiostatic |
| Accuracy | 0.05 pH ± 5 mV | 0.05 pH ± 5 mV |
| Repeatability | ± 0.05 pH ± 1 mV | ± 0.05 pH ± 1 mV |
| Response Time (T90) | < 60s | < 60s |
| Operating Temperature | 0...100°C in insertion/by-pass | 0...50°C in immersion |
| Maximum Operating Pressure | 11 bar | 11 bar |
| Body Material | Glass and PPS | Glass and PPS |
| Measuring Electrode | Hemispherical glass membrane | Hemispherical glass membrane |
| Other Materials | Teflon® | Teflon® |
| Mechanical Protection | IP68 sensor + cable | IP68 sensor + cable |
| Power Supply | 12...24Vdc | 12...24Vdc |
| Absorption | Max. 1W | Max. 1W |
| Cable | 10 m integral with the sensor | 10 m integral with the sensor |
| Signal Interface | Standard Modbus RTU protocol | Standard Modbus RTU protocol |