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manufacturer:
Siemens
mpn:
QFA3171D
Product Description
Siemens - QFA3171D Outside Air RH T Sensor, 2 percent, RH: 4-20 mA T: 4-20 mA, Display
This Q-Series Outdoor Air Relative Humidity and Relative Humidity Temperature Sensor with LCD display monitors and transmits changes in humidity and temperature to the building control system. This unit is especially suited for HVAC applications where high accuracy and short response times for measuring relative humidity are required. This sensor has a 2 percent accuracy, a 4 to 20 mA humidity output signal, and a 4 to 20 mA temperature output signal.
Additional Information
Measurement range humidity0…100 % r.h.
Measuring range, temperature0…50 °C, -35…35 °C, -40…70 °C
Sensing element, temperaturePt1000
Time constantHumidity: 20 s, Temperature: 510 s
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.
DisplayLCD
Dimensions (W x H x D)80 x 144 x 39 mm