Overview
The Belimo 01DT-5ER is a long-probe passive duct/immersion temperature sensor with a Ni1000 (JCI) sensing element and a 12-inch (300 mm) probe. It is optimized for deep duct air profiling and high-capacity hydronic applications in JCI installations.
Features
- 12-inch (300 mm) probe length for deep air duct profiling
- Ni1000 (JCI) passive temperature sensing curve
- NEMA 4X / IP65 enclosure for long-lasting environmental protection
- Fast field connection with spring-clip wire terminals
- Compatible with duct flanges or thermowells for pipe immersion
Specifications
- Sensor Element: Ni1000 (JCI)
- Probe Length: 12″ [300 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
- Deep duct air temperature sensing in large air handlers
- Hydronic supply and return pipe temperature sensing
- JCI controller integration in commercial HVAC facilities


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