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Dwyer WHT-311 | Water-Resistant Humidity/Temperature Transmitter | 4-20 mA RH/Temp, Sintered Filter
Part Number : WHT-311
A detachable sintered filter guards the sensor of the Dwyer WHT-311, a water-resistant Series WHT unit with 4-20 mA outputs for humidity and temperature. Its stated application is outdoor air sensing for air handling economisers, where the WHT-311 reads humidity and temperature.
- WHT-311: RH accuracy ±2% from 20 to 80% RH, ±3% at 10 to 20% and 80 to 90% RH
- 4-20 mA output version: supply 10-35 VDC loop powered on the WHT-311
- 4-20 mA temperature output uses a solid state band gap sensor, ±0.3°C @ 25°C
- WHT-311: ABS housing designed to meet NEMA 3S (IP54); weight 0.3 oz (8.5 g)
- Response 15 s, drift below 1% RH per year, operating -40 to 140°F (-40 to 60°C) on the WHT-311
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