This Q-Series Outdoor Air Relative Humidity and Relative Humidity & Temperature Sensor 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.
Humidity Sensor, Sensors & Thermostats, Temperature Sensor
Siemens QFA3171 Temperature and Humidity Room Sensor, 4-20mA, 2%
$284.37
Siemens QFA3171, Outside Air Relative Humidity and Temperature Sensor, 2% accuracy, RH: 4-20 mA, T: 4-20 mA
Availability: Backordered: Item typically ships in 5 to 10 days
Operating voltage: DC 13.5…35 V
Measuring range, temperature: 0…50 °C, -35…35 °C, -40…70 °C
Measurement range humidity: 0…100 % r.h.
Measurement accuracy: At 15…35 °C: ±0.6 K, 23 % r.h., 0…100 % r.h.: ±2 % r.h.
Time constant: Humidity: 20 s, Temperature: 510 s
Connection, electrical: Screw terminals
Degree of protection: IP65 / IP40
Dimensions (W x H x D): 80 x 144 x 39 mm
Documents
Product Datasheet / Manual / Installation Instruction documents are provided below:
| Weight | 0.159 lbs |
|---|---|
| Dimensions | 16.1 × 8.8 × 4.5 in |




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