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manufacturer:
Siemens
mpn:
QFM4171
Product Description
Siemens - QFM4171 Duct RH and Temp Sensor, 2 percent certified, RH: 4-20 mA T: 4-20 mA
This Q-Series Duct Relative Humidity Temperature Sensor monitors and transmits changes in humidity and temperature to the building control system. This unit is especially suited for applications where precise, stable humidity sensing is required. It has a 2 percent certified accuracy rating, a 4 to 20 mA humidity output signal, and a 4 to 20 mA temperature signal.
Additional Information
Immersion length90…206 mm
Measurement range humidity0…100 % r.h.
Measuring range, temperature0…50 °C, -35…35 °C, -40…70 °C
Time constantHumidity: 20 s, Air v
Signal output humidityDC 4...20 mA
Signal output temperatureDC 4...20 mA
Operating voltage13.5…35 VDC
Analog outputs4-20 mA
Measuring rangeTemperature: -40 to 158°F; Humidity: 0 to 100% RH
Measurement accuracyAt 15…35 °C: ±0.6 K, 23 % r.h., 0…100 % r.h.: ±2 % r.h.
CommunicationIncludes 3-point calibration certificate
Dimensions (W x H x D)80 x 117 x 39 (274) mm