Product Introduction
US pHionics Inc STS Series pH Sensor Features:
Combined double junction electrode, detects 0~14 pH
Large reference circuit half-cell potential, reduces calibration frequency
Secondary 0-50°C temperature sensor, 2-wire 4-20 mA analog output, compatible with wide-range data loggers or telemetry devices (RTU)
Narrow diameter (0.75 inches or 1.9 cm), can be inserted into pipes or boreholes for detection
US pHionics Inc STS Series pH Sensor Applications:
Groundwater monitoring
Agricultural runoff
Mining pollution
Industrial wastewater monitoring
Wastewater treatment
Ballast water monitoring
Environmental remediation
Optional Ranges
0-14 pH ，6-11 pH
US pHionics Inc STS Series pH Sensor Parameters:
| Output |
4-20 mA |
| pH Range |
0-14 pH |
| Operating Temperature |
0-70°C |
| Pressure Range |
0-70 psi |
| Electrode Type |
Silver/Silver Chloride, Double Junction, Replaceable Gel Electrode |
| Minimum Flow Rate |
1.5 ft (0.457 m)/s |
| Transmitter Type |
2-Wire |
| Insulation |
600 VDC |
| Automatic Temperature Compensation |
0-70°C |
| Supply Voltage |
8-40 VDC |
| Response Time |
95% < 5 s |
| Warm-Up Time |
2S |
| Wetted Materials |
316 Stainless Steel, Delrin®, Viton™, Glass, Epoxy Resin |
| Length |
14.25 in (36.20 cm) |
| Width |
0.750 in (1.9 cm) Maximum |
| Weight (without cable) |
0.50 lbs (0.227 kg) |
| Linearity |
±0.014 pH |
| Accuracy |
±0.014 pH |
| Sensitivity |
±0.01 pH |
| Stability |
±0.03 pH per year |
