pHionics STs Series Conductivity Sensor
The pHionics STs Series™ Conductivity is a water quality sensor (sonde) designed to pair with a datalogger or RTU for real-time data capture. A narrow diameter allows the STs Series to go places others can’t while the chemical-resistant housing ensures the sensor can stay there for many years. Proprietary electrode technology provides stable measurements to reduce calibration frequency.
Highlighted Features
- 4-cell electrode measuring conductivity (ec), total dissolved solids (TDS), or salinity depending on scaling with datalogger or remote telemetry unit (RTU)
- Secondary 0-50°C temperature sensor
- 2-wire, 4-20 mA analog outputs compatible with many dataloggers or RTUs.
- Narrow diameter (0.75 inches or 1.9 cm) for groundwater monitoring applications
- Isolated to prevent ground loops
- Holds calibration for months at a time
All parts, including the cable, are easily replaceable without tools using pHionics patented pHiConn™ System, saving frustration and money.
In addition, isolation, differential amplification, and shielding ensure a strong signal with high signal-noise ratios, all while remaining low-power.
These features make our conductivity sensor well-suited for applications such as groundwater monitoring, wastewater treatment, aquaculture, pollution monitoring, etc.
Full Features List
- 4-cell electrode to measure conductivity, TDS, or salinity depending on scaling
- Secondary 0-50°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)
- Electrode guard to reduce debris or algae buildup and protect from damage
- Fully submersible up to 70 psi
- Shielded, Kevlar®-reinforced, water-blocked polyurethane cable
- 4-20 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
- Isolated to prevent ground loops
- Signal conditioning to remove background noise
Low Maintenance
- Reduce the number of site visits with the STs Series Conductivity sensor. A 4-cell electrode holds calibration for long periods of time while also preventing errors due to polarization.
- In addition, the guard protects the sensing elements from algae and debris build-up, further reducing the need for calibration.
Mounting Options
Due to their small diameter and light-weight design, pHionics STs Series™ sensors may be set up in a number of ways. They may be suspended by the Kevlar-reinforced cable down a pipe, as shown to the right, or mounted at the end of a pipe using the pHionics cmp-k compression fitting, as shown to the left and below.
Specifications
Conductivity Sensor
| Output | 4-20 mA |
| Conductivity Range | 0-100,000 µS |
| Electrode Type | 4-cell |
| Transmitter Type | 2-wire |
| Automatic Temperature Compensation | 2% per °C |
| Power Supply Voltage | 8-40 VDC |
| Response Time | 95% < 5 seconds |
| Pressure Range | 0-70 psi |
| Wetted Materials | 316 SS, Delrin®, Viton™, PVDF |
| Length | 14.50 in (36.83 cm) |
| Width | 0.75 in (1.90 cm) maximum |
| Weight (No cable) | 0.50 lbs (0.227 kg) |
| Linearity | ± 0.20% of full scale* |
| Accuracy | ± 0.20% of full scale* |
| Sensitivity | ± 0.05% of full scale |
Temperature Sensor
| Output | 4-20 mA |
| Temperature Range | 0-50°C |
| Accuracy | +/- 1°C |
| Linearity | +/- 0.5°C |
| Power Supply Voltage | 7-40 VDC |
Cable
| Cable Material | Polyurethane |
| Type | 4 conductor, Kevlar® reinforced, water blocked, shielded, twisted-pair wiring |
| Maximum Distance | 3 miles |
| Resistance per 1000 ft (304.8 m) | 26 Ohms |
| Replaceable? | Yes |
| Brand | pHionics |
|---|---|
| Country of Manufacture | United States |
| Ideal For | Professional |
Standard delivery (Royal Mail) - £3.95 to £4.99
Available for purchases under £100. Your order should be with you within 4-5 working days.
Tracked delivery - £5.95 to £6.50
Our tracked delivery is either Royal Mail tracked, Parcelforce or UPS. Your order should be with you within 1-2 working days.
Next Day service - £9.95
Place your order before 2:30pm Monday - Friday and receive your order the next working day (excludes Saturdays, Sundays and Public holidays). Orders placed at the weekend are shipped on the next working day and usually arrive the following day. Goods shipped on a next working day service may be subject to delays by the courier which are outside of our control. Services to outlying areas may differ and take longer and enhanced services may not be available.
International delivery is available for this product. The cost and delivery time depend on country.
Collection
You can collect from our showroom. Please call before visiting to ensure we have your order ready.