Siemens 538-871 : Duct Temperature Sensor, 10K Ohm Matched Pair Thermistor (TEC only), Point Sensor, 4 inches (rigid) Probe, -40°F to 180°F (-40°C to 82°C)
The Siemens 538-871 duct temperature sensor monitors and transmits changes in duct air temperature to your HVAC control system for accurate, reliable temperature measurement. This point sensor uses a 10K Ohm Matched Pair Thermistor (TEC only) element with a 4 inches (rigid) probe. Measuring range is -40°F to 180°F (-40°C to 82°C). Accuracy is ±0.50°F (±0.28°C) @ 77°F (25°C). For use with Siemens TEC only.
Specifications:
| Output Signal | 10K Ohm Matched Pair Thermistor (TEC only) |
| Sensor Type | Point |
| Probe Length | 4 inches (rigid) |
| Measuring Range | -40°F to 180°F (-40°C to 82°C) |
| Accuracy | ±0.50°F (±0.28°C) @ 77°F (25°C) |
| Probe Material | 0.028 wall SAE J526 ZTEW or Galfan steel tubing |
| Housing | Standard NEC approved 2x4 inch electrical conduit box with 1/2-inch (13 mm) knockouts |
| Screw Head Type | Standard slotted |
| Notes | For use with Siemens TEC only. |
Datasheets
 | Siemens Duct Point Temperature Sensors Technical Specific |
| Duct Temperature Sensor Installation |
- Sensor Type:
- Duct
- Temperature Element:
- TEC Only, RJ-11 Port
- Probe Length:
- 4
- Enclosure:
- Galvanized Steel Enclosure
- Supported Protocols:
- None
- Humidity Element:
- None
- CO2 Element:
- None
- Setpoint:
- No Setpoint
- Override:
- No
- Display:
- No Display
