Siemens 540-244-18 : Duct Temperature Sensor, 100K Ohm Thermistor, Averaging Sensor, 18 inches (rigid) Probe, -40°F to 180°F (-40°C to 82°C)
The Siemens 540-244-18 duct temperature sensor monitors and transmits changes in duct air temperature to your HVAC control system for accurate, reliable temperature measurement. This averaging sensor uses a 100K Ohm Thermistor element with a 18 inches (rigid) probe. Measuring range is -40°F to 180°F (-40°C to 82°C). Accuracy is ±0.36°F (±0.2°C) @ 77°F (25°C).
Specifications:
| Output Signal | 100K Ohm Thermistor |
| Sensor Type | Averaging |
| Probe Length | 18 inches (rigid) |
| Measuring Range | -40°F to 180°F (-40°C to 82°C) |
| Accuracy | ±0.36°F (±0.2°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 |
Datasheets
 | Siemens Duct Point Temperature Sensors Technical Specific |
| Duct Temperature Sensor Installation |
- Sensor Type:
- Averaging
- Averaging Type:
- Rigid Steel
- Temperature Element:
- 100K
- Probe Length:
- 18 Inch
- Enclosure:
- Galvanized Steel Enclosure
