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pHionics STs pH Sensor with 4 to 20mA output

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Product code: STS1014S-025

Backorder Now, once ordered your item will dispatch before the 29th of May 2025, call 1300 737 871 (NZ 0800 737 871 to confirm).

The pHionics STs Series pH sensor provides accurate pH and temperature measurements from 0-14pH to a datalogger or RTU for continuous water quality monitoring.

-19mm diameter probe while a durable, chemical-resistant housing.

-4-20 mA signal capable of transmission up to 3 miles (with proper wire gauge).

-Suitable for groundwater monitoring, wastewater treatment, aquaculture, pollution control, and many others.

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$1,889.10 AUD + GST
 $2,078.01 AUD Inc. GST
The pHionics STs Series pH sensor provides accurate pH and temperature measurements to a datalogger or RTU for continuous water quality monitoring. A large, double junction reference cell provides accurate, stable pH measurements for long periods of time. In addition, isolation, differential amplification, and shielding eliminate background noise without draining the battery of the datalogger or RTU.
The STs Series goes where other sensors cannot with a 0.75 (19mm) diameter while a durable, chemical-resistant housing ensures many years in-use.
All parts, including the cable, are easily replaceable without tools usingpHionicspatentedpHiConn System, saving frustration and money.
These features make our pH sensor well-suited for applications such as groundwater monitoring, wastewater treatment, aquaculture, pollution control, and many others.
Features:
- Combination double-junction electrode with large reference reservoir
- Secondary 0 to 50 C temperature sensor
- Chemical-resistant Delrin, PVDF,and 316 Stainless Steel housing (Titanium optional)
- Metal housing acts as the solution ground, removing background noise caused by stray electrical currents
- Narrow diameter (0.75 inches or 1.9 cm)
- Removable electrode guard to protect from damage while allowing access to electrode for cleaning
- Fully submersible up to 70 psi
- Shielded, Kevlar-reinforced, water-blocked polyurethane cable
- 4 to 20 mA signal capable of transmission up to 3 miles (with proper wire gauge)
- Automatic Temperature Compensation (2% per degree Celsius)
- Reversible Input Protection and Operation
- 2-second warm-up time to avoid battery drain of datalogger or RTU
- Low power usage for long-term water quality monitoring
- Isolated to prevent ground loops
- Signal conditioning to remove background noise

Specifications

- Outout: 4 to 20 mA
- pH range: 0 to 14
- Operating temperature range: 0 to 70 C
- Electrode type: Silver/silver chloride, double junction, replaceable gel electrode
- Transmitter type: 2-wire
- Pressure range: 0 to 70 psi
- Automatic temperature compensation: 0 to 70 C
- Isolation: 600 VDC
- Power supply: 8 to 40 VDC
- Warm-up time: 2 seconds
- Response time: 95% less than 5 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: +/-0.014 pH
- Sensitivity: +/- 0.01 pH
- Stability: +/- 0.03 pH
- Repeatability: +/- 0.01 pH

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