This product listing is for the part QFM2160, manufactured by Siemens, and is a Duct-mounted sensor for measuring relative humidity and air temperature with DC 0…10 V or 4…20 mA outputs for integration with building automation and HVAC control systems..

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Part Specifications:
- Measured parameters: Relative humidity and temperature
- Humidity output signals: DC 0…10 V, DC 0…5 V, or 4…20 mA
- Temperature output signals: DC 0…10 V, DC 0…5 V, 4…20 mA or LG-Ni 1000 (passive), depending on variant
- Measuring range (humidity): 0 to 100 % r.h. (range of use 0 to 95 % r.h. non-condensing) % r.h.
- Measuring accuracy (humidity): ±3 % r.h. (within comfort range) % r.h.
- Temperature measuring ranges (factory variants): 0…50 °C (R2 factory setting), -35…+35 °C (R1) or -40…+70 °C (R3) °C
- Operating voltage: 24 VAC or 13.5 to 35 VDC VAC / VDC
- Power consumption: ≤ 1 VA (typical for QFM21xx variants); max < 2.5 VA for some types VA
- Response time (time constant): Approximately 20 s (at 0°C to 50°C in moving air) s
- Permissible air velocity: Up to 20 m/s (66 ft/s) m/s
- Protection class: IP54 IP
- Probe length (immersion rod): 90…154 mm (depending on variant) mm
- Material / sensing principle: Capacitive humidity sensing element; temperature sensing element (resistive/thermistor or Ni1000 depending on variant)
- Measuring range (humidity - effective): 0 to 95 % r.h. (effective measuring range for specified accuracy) % r.h.
- Connection / terminals: Terminals for operating voltage (G, G0) and outputs (U1 humidity, U2 temperature, I1/I2 for current outputs)
- Installation location: Duct mounting (immersion probe placed in duct airstream)
- Permissible ambient temperature (range of use): −40 to +70 °C (depending on temp range variant); datasheet lists range of use −15 to +60 °C in some sections °C
- Output burden (current): Humidity DC 0…10 V max +1 mA; 4…20 mA output burden as per datasheet (I1/I2 specifications) Ohm / mA
- Standards / compliance: Not explicitly listed in available datasheet excerpts

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Siemens

QFM2160

Duct-mounted sensor for measuring relative humidity and air temperature with DC 0…10 V or 4…20 mA outputs for integration with building automation and HVAC control systems.

Specifications

Physical

Protection class

IP54 IP

Connection / terminals

Terminals for operating voltage (G, G0) and outputs (U1 humidity, U2 temperature, I1/I2 for current outputs)

Installation location

Duct mounting (immersion probe placed in duct airstream)

Compliance

Standards / compliance

Not explicitly listed in available datasheet excerpts

Technical

Measured parameters

Relative humidity and temperature

Humidity output signals

DC 0…10 V, DC 0…5 V, or 4…20 mA

Temperature output signals

DC 0…10 V, DC 0…5 V, 4…20 mA or LG-Ni 1000 (passive), depending on variant

Measuring range (humidity)

0 to 100 % r.h. (range of use 0 to 95 % r.h. non-condensing) % r.h.

Measuring accuracy (humidity)

±3 % r.h. (within comfort range) % r.h.

Temperature measuring ranges (factory variants)

0…50 °C (R2 factory setting), -35…+35 °C (R1) or -40…+70 °C (R3) °C

Operating voltage

24 VAC or 13.5 to 35 VDC VAC / VDC

Power consumption

≤ 1 VA (typical for QFM21xx variants); max < 2.5 VA for some types VA

Response time (time constant)

Approximately 20 s (at 0°C to 50°C in moving air) s

Permissible air velocity

Up to 20 m/s (66 ft/s) m/s

Material / sensing principle

Capacitive humidity sensing element; temperature sensing element (resistive/thermistor or Ni1000 depending on variant)

Measuring range (humidity - effective)

0 to 95 % r.h. (effective measuring range for specified accuracy) % r.h.

Permissible ambient temperature (range of use)

−40 to +70 °C (depending on temp range variant); datasheet lists range of use −15 to +60 °C in some sections °C

Output burden (current)

Humidity DC 0…10 V max +1 mA; 4…20 mA output burden as per datasheet (I1/I2 specifications) Ohm / mA

Dimensions

Probe length (immersion rod)

90…154 mm (depending on variant) mm

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