Siemens QFM21 Series Temperature-Humidity Duct Sensor

Siemens QFM21 Series duct sensors can be used for all systems or devices capable of acquiring and handling the sensor’s 0 to 10 Vdc, 4 to 20 mA or passive resistance output signals

ApplicationsControl sensors in supply or return air ducts, Reference sensors, for example, for shifting the dew point, Limit sensors, for Ex. in connection with steam humidifiers, Limit sensors, for Ex. measured value indication or for connection to a building automation and control system.

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Quantity

$2,122.55
Tax /GST included

Siemens QFM21 Series is a duct sensor for relative humidity and temperature with basic features 24 Vac or 13.5 to 35 Vdc operating voltage, 0 to 10 Vdc or 4 to 20 mA signal output for relative humidity sensing, 0 to 10 Vdc or 4 to 20 mA, or Siemens Ni 1K ohm signal output for temperature sensing and +3% measuring accuracy for relative humidity, within the comfort range.

Please find the below information and select model from drop down:

Part Number

Temperature

Temperature Signal Output

Humidity

Humidity Signal Output

QFM2100

NA

NA

 

 

 

 

0-100%

 

 

 

      0-10Vdc

QFM2110

 

–31°F to 140°F(–35°C to 60°C)

1000 Ω Pt(0.00385) 

QFM2120

Siemens 1000 Ω Ni

QFM2160U

 

–40°F to 158°F (–40°C to 70°C) OR –31°F to 95°F (−35°C to 35°C)

0-10 Vdc

QFM2171

4-20 mA

 

    4-20 mA

QFM2101

 

                     NA

NA

49 Items

Data sheet

Manufacturer
Siemens
Accuracy
Humidity at 30...70 % r.h. and 23 °C: ±3, Temperature, at 15...35 °C: ±0.8, Temperature, at 35...50 °C: ±1.0 % r.h.
Output
DC 4...20 mA
Immersion length
90...154 mm
Output-Analog
DC 0...10, DC 4...20 V
Operating Voltage
DC 13.5...35 V
Protection class
IP54
Calibration
Provided alongwith and valid for 1 year, traceable to National Standards
Dimensions
80 x 88 x 39 mm
Warranty
1 Year manufacturer warranty

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