Siemens QFM2160 Duct Sensor

Siemens QFM2160 Duct Sensor acquires the relative humidity in the air duct whose electrical capacitance changes as a function of the relative humidity via its capacitive humidity sensing element. This sensor also acquires the temperature in the air duct via its sensing element whose electrical resistance changes as a function of the temperature.

Applications: Air Conditioning and Ventilating Systems, HVAC, automobiles and industries

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Country : United States

Product Description

Siemens QFM2160 Duct Sensors are for use in air ducts of ventilation and air conditioning plant for acquiring relative humidity and temperature. It is used as Control sensors in the supply or extracts 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

Features of Siemens QFM2160 Duct Sensor:

  • 4 to 20 mA or 0 to 10 Vdc output signals
  •  A high degree of accuracy
  • Removable, replaceable sensing tip(2% and 2% certified models)
  •  Versions with LCD display also available

Additional Information

Weight 2 kg
Model No
Measuring Parameters Temperature, Humidity
Temperature Range 0 °C to 50 °C, −35 °C to +35 °C, -40 °C to 70 °C
Accuracy ±0.8 K for 15 to 35 °C ; ±1.0 K for 35 to 50 °C
Humidity Range
Operating Temperature
Operating Humidity
Operating Voltage
Sensing element, temperature
Time constant
Immersion length
Connection, electrical
Type of fixing
Analog Output, Signal DC 0...10 V; DC 4...20 mA
Signal output temperature
Signal output humidity
Degree of Protection IP54


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