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Part Numbers
T-DS-STS1014S-025
•T-DS-STS1014T-025
pHionics STs pH & Temperature Sensor
3rd Party Sensor, HOBO RX Station-Compatible
From $930.00 USD
This durable water quality sensor can be combined with HOBO RX systems to provide real-time pH and temperature data.
Important Information
25-foot cable included. Manufactured and distributed by a third party, pHionics, this sensor can deliver real-time data to the LI-COR Cloud remote monitoring platform when connected to a cellular HOBO RX station via the Analog Module or the HOBOnet wireless sensor network's Analog Mote.
*For custom cable lengths, contact our sales team.
Overview
The pHionics STs Series™ pH sensor provides accurate pH and temperature measurements. These measurements are output via two 4-20 mA signals that easily connect to HOBO stations and HOBOnet motes with analog inputs. The compact design makes the rugged sensor/transmitter ideal for applications such as water quality monitoring and wastewater treatment.
Features
- 0-14 pH Range
- Combination double-junction electrode with large reference reservoir
- Built-in 0-50°C temperature sensor (2nd channel)
- Chemical-resistant PVDF and 316 Stainless Steel housing (Titanium optional)
- Narrow diameter (0.75 inches or 1.9 cm)
- Removable electrode guard
- 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)
- Reversible Input Protection and Operation
- Lowest power usage compared to other 4-20 mA pH sensors
- Isolated to prevent ground loops
- Signal conditioning to remove background noise
Specifications
pH Sensor
| Output | 4-20 mA |
| pH Range | 0-14 pH |
| Operational Temperature Range | 0-70°C |
| Electrode Type | Silver/silver chloride, double junction, replaceable gel electrode |
| Transmitter Type | 2-wire |
| Pressure Range | 0-70 psi |
| Automatic Temperature Compensation | 0-70°C |
| Isolation | 600 VDC |
| Power Supply Voltage | 8-40 VDC |
| Warm-up Time | 2 seconds |
| Response time | 95% < 5 seconds |
| Wetted Materials | 316 Stainless Steel, Delrin®, Viton™, glass, 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 | ±0.014 pH* |
| Accuracy | ±0.014 pH* |
| Sensitivity | ±0.01 pH |
| Stability | ±0.03 pH per year |
| Repeatability | ±0.01 pH |
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 |
