Overview
The Belimo 01DT-5QT is an 18-inch passive duct/immersion temperature sensor with an NTC20k sensing element. It is designed for maximum probe reach in large air ducts and deep pipe installations.
Features
- 18-inch stainless steel sensing probe for broad coverage
- NTC20k thermistor element for consistent performance
- Weatherproof NEMA 4X / IP65 protective housing
- Spring-loaded terminal block for quick installation
Specifications
- Sensor Type: NTC20k
- Probe Length: 18″ [450 mm]
- Probe Diameter: 0.24″ [6 mm]
- Enclosure Rating: NEMA 4X / IP65
- Measuring Range: -60°F to 300°F [-50°C to 150°C]
Applications
- Air temperature detection across expansive ductwork sections
- Long-reach immersion temperature sensing in large hydronic piping



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