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manufacturer:
Siemens
mpn:
QFM2171
Product Description
Siemens - QFM2171 Duct RH and Temp Sensor, 5 percent accuracy, RH: 4-20 4 to 20 Ma T: 4-20 mA
This Q-Series Duct Relative Humidity Temperature Sensors monitor and transmit changes in humidity and temperature to the building control systems. These units are especially suited for applications where precise, stable humidity sensing is required. This sensor has a 5 percent accuracy rating, a 4 to 20 mA humidity output signal, and a 4 to 20 mA temperature signal.
Additional Information
Immersion length90…154 mm
Measurement range humidity0…95 % r.h.
Measuring range, temperature0…50 °C, -35…35 °C, -40…70 °C
Sensing element, temperatureDC 4...20 mA
Time constantHumidity: 20 s, Temperature: 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 95% RH
Measurement accuracyAt 15…35 °C: ±0.6 K, 23 % r.h., 30…70 % r.h.: ±3 % r.h.
Dimensions (W x H x D)80 x 88 x 39 (222) mm