Overview
The Belimo 01DT-5ML is a passive duct/immersion temperature sensor built with an NTC10k3 (Precon) thermistor element and a 4-inch (100 mm) probe length. It delivers accurate temperature sensing for standard HVAC ductwork and hydronic loops.
Features
- NTC10k3 (Precon / Type 3) passive thermistor element
- 4-inch (100 mm) probe length for standard air duct insertion
- NEMA 4X / IP65 rated enclosure for moisture and dust protection
- Rapid wiring via spring-loaded terminal connections
- Dual compatibility for air duct and liquid thermowell applications
Specifications
- Sensor Element: NTC10k3 (Precon / Type 3)
- Probe Length: 4″ [100 mm]
- Probe Diameter: 0.24″ [6 mm]
- Output Signal: Passive resistance
- Enclosure Rating: IP65, NEMA 4X
- Measuring Range: -40°F to 302°F [-40°C to 150°C]
Applications
- Air temperature measurement in supply and return ducts
- Hydronic fluid temperature control in heating/chilled water systems
- Direct digital controller integration requiring 10k3 Precon curve compatibility


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