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pHionics STs ORP (Redox) Sensor with 4-20mA output

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Product code: STS2100S-025

Order Me In, once ordered this item will likely dispatch before the 15th of September 2025, call 1300 737 871 (NZ 0800 737 871) to confirm.

The pHionics STs Series™ ORP sensor provides reliable ORP (redox) and temperature measurements to a datalogger, RTU, PLC, or SCADA system for continuous water quality monitoring.

-Measurement range: -1000 to +1000 mV oxidation-reduction potential (ORP).

-Has a narrow diameter (1.9 cm), appropriate for groundwater monitoring applications.

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$1,989.20 AUD + GST
 $2,188.12 AUD Inc. GST
The pHionics STs Series ORP sensor provides reliable ORP (redox) and temperature measurements to a datalogger, RTU, PLC, or SCADA system for continuous water quality monitoring.
Accurate and low-maintenance operation is ensured with noise-resistant 4 to 20 mA analog signals and a large-volume, double-junction electrode. Typical electrode life is 2 to 4 years and, when needed, a replacement is easily installed thanks to pHionics patented pHiConn Connector System. In addition, the electronics are isolated to prevent ground loops and proprietary signal conditioning virtually eliminates background noise.
Durability is guaranteed with chemical-resistant 316 Stainless Steel (titanium optional) and high-quality double O-ring seals that last many years, even in harsh conditions. When combined with the compact design (0.75 in. or 19 mm diameter), this ORP sensor proves to be compatible with a wide range of applications.
If you need a sensor that works anytime, anywhere, for many years, then the pHionics STs Series ORP sensor is here for you.
Features:
- Replaceable electrode with platinum sensing element measuring -1000 to +1000 mV oxidation-reduction potential (ORP)
- Large reference half-cell to reduce calibration frequency
- Secondary 0 to 50 C temperature sensor
- 2-wire, 4 to 20 mA analog outputs compatible with wide range of dataloggers or remote telemetry units (RTU)
- Narrow diameter (0.75 inches or 1.9 cm) for groundwater monitoring applications
- Low power usage

Specifications

- Outout: 4 to 20 mA
- ORP range: -1000 to +1000 mV
- Operating temperature range: 0 to 70 C
- Pressure range: 0 to 70 psi
- Electrode type: Platinum sensing element, silver/silver chloride gel-filled reference
- Transmitter type: 2-wire
- Pressure range: 0 to 70 psi
- Automatic temperature compensation: none
- Isolation: 600 VDC
- Power supply: 8 to 40 VDC
- Warm-up time: 2 seconds
- Loop impedance: 200 Ohms at 12 VDC/800 Ohms at 24 VDC/1600 Ohms at 40 VDC
- Response time: 95% less than 2 seconds
- Wetted materials: 316 stainless steel, Delrin, Viton, glass, epoxy
- Length: 36.20 cm
- Width: 1.9 cm maximum
- Weight (No cable): 0.227 kg
- Linearity: +/- 4mV
- Accuracy: +/- 4mV
- Sensitivity: +/- 1mV
- Stability: +/- 2mV
- Repeatability: +/- 10mV

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