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Siemens QFM... Duct Humidity Sensor

List Price: $300.00  
($313.50 inc tax) You save: $15.00 (5%)
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· Operating voltage AC 24 V / DC 13.5...35 V

· Signal output DC 0...10 V / 4…20 mA for relative humidity

· Signal output DC 0...10 V / 4…20 mA / T1 / LG-Ni 1000 for temperature

· Measuring accuracy ±3 % r. h. within the comfort range

· Range of use -15…+60 °C / 0…95 % r. h. (non-condensing)


The QFM21… duct sensors are for use in air ducts of ventilation and air conditioning plant for acquiring:

· The relative humidity and

· The temperature. The sensors are used as:

· Control sensors in the supply or extract air

· Reference sensors, e.g. for shifting the dew point

· Limit sensors, e.g. in connection with steam humidifiers

· Limit sensors, e.g. for measured value indication or for connection to a building automation and control system

· Sensors for enthalpy and absolute humidity, together with SEZ220


QFM2100 Duct Humidity Sensor, 0…10V
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QFM3101 Duct Humidity Sensor, 4...20mA, High Accuracy
QFM81.2 Duct Hygrostat, 15…95%rh, External Setpoint Adjustment
QFM81.21 Duct Hygrostat, 15…95%rh, Internal Setpoint Adjustment