Dwyer Series BTT

Series BTT Temperature Transmitter

Current or Voltage Output; NEMA 4X Enclosures

The Dwyer Series BTT Temperature Transmitter is used to monitor the temperature inside the air ducts or water lines. Mounting configurations include duct, immersion, and outside air. For duct and immersion models, probes can be ordered from 2.5″ up to 18″ in length. The OSA models can be ordered with an optional radiation shield that allows the sensor to be mounted in direct sunlight.

Specifications

• Temperature Sensor:Pt1000 RTD.
• Range:-40 to 140°F (-40 to 60°C).
• Temperature Limits:32 to 122°F (0 to 50°C).
• Accuracy:>Voltage: 0 to 60°C: ±0.5°C; -40 to 0: ±1.0°C; Current: -20 to 50°C: ±0.5°C; -40 to -20°C and 50 to 60°C: ±0.75°C.
• Response Time:100 msec.
• Wetted Materials:All models: 304 SS (probe), polycarbonate (housing); Duct and Immersion Models: Neoprene (gasket); Outside Air Models: Nylon (insert), silocone (o-ring).
• Process Connection:1/2″ NPT (immersion models only).
• Electrical Connection:Removable terminal block, knocks out for conduit fitting.
• Conduit Connection:1/2″ NPT.
• Probe Lengths:2.5 to 18″ (depending on configuration).
• Power Requirements:13 to 36 VDC.
• Output Signal:4 to 20 mA or 0 to 10 VDC (depending on model).
• Enclosure Rating:NEMA 4X (IP66) (immersions models require thermowell).
• Weight:5.11 oz, 145 g (duct/immersion); 8.4 oz (238 g) (OSA without radiation shield);1 lb 7.4 oz (663.4 g) (OSA with radiation shield).
• Agency Approvals:CE.