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Siemens QFA3171 Outdoor Air Relative Humidity Index Track and monitor relative humidity/temperature sensors and transmit temperature and humidity shifts to control system construction. Standard available Models are rated for 2 % and 2 %, for humidity only and Combining humidity with a sense of temperature. Sensors are accessible with 4 to 20 mA, or input signals 0 to 10 Volts.
Features of Siemens QFA3171 Humidity Sensor
- 4 to 20 mA or 0 to 10 Vdc output signals
- High degree of accuracy
- Removable, replaceable sensing tip sold separately on B-39
- “D” suffix models include LCD Display*
|Measuring Parameters||Temperature and humidity|
|Range||0 to 50 °C (R2 = factory setting), −35 to +35 °C (R1), −40 to +70 °C (R3)|
|Accuracy||23 °C ±<0.5 K ; 15 to 35 °C ±0.6 K ; −35 to +70 °C ±0.8 K|
|Operating Temperature||-31 to +140°F (-35 to +60°C)|
|Temperature Effect||Less than 0.1% per degree C|
|Operating Humidity||0...100 % r.h. (with condensation)|
|Dimensions||3.43 X 3.5 X 4.1" ; 87 X 89 X 104 mm (H X W X D )|
|Weight||Without LCD-display 0.152 kg ; With LCD-display 0.175 kg|
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