Description
The pHionics STs Series Dissolved Oxygen is a dual-output sensor that pairs with a datalogger or RTU for real-time water quality monitoring. A narrow diameter allows the STs Series to go where other sensors cannot while a durable, chemical-resistant housing ensures many years in-use.
All parts, including the cable, are easily replaceable without tools using pHionics patented pHiConn System, saving frustration and money.
Highlighted Features
| Dissolved Oxygen Sensor | |
| Output | 4-20 mA |
| Dissolved Oxygen Range | 0-20 mg/L (ppm) |
| Operational Temperature Range | 0-70 |
| Electrode Type | Galvanic cell with Teflon membrane |
| Minimum Flow Rate | 1.5 ft (0.457 m) per second |
| Transmitter Type | 2-wire |
| Automatic Temperature Compensation | 2% per |
| Isolation | 600 VDC |
| Operational Temperature Range | 0-70 |
| Power Supply Voltage | 8-40 VDC |
| Response time | 98% < 60 seconds |
| Pressure Range | 0-70 psi |
| Wetted Materials | 316 Stainless Steel, Delrin®, Viton, Teflon®, epoxy |
| Length | 14.25 in (36.20 cm) |
| Width | 0.750 in (1.9 cm) maximum |
| Weight (No cable) | 0.50 lbs (0.227 kg) |
| Linearity | ± 0.5% of full scale* |
| Accuracy | ± 2.0% of full scale* |
| Sensitivity | ± 0.05% of full scale |
| Stability | ± 2.0% of full scale |
| Temperature Sensor | |
| Output | 4-20 mA |
| Temperature Range | 0-50 |
| Accuracy | +/- 1 |
| Linearity | +/- 0.5 |
| 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 |
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