QAM2171.040Duct temperature sensor 400 mm, DC 4...20 mA

The QAM… duct temperature sensors are for use in ventilation and air conditioning
plants as:
• Supply or extract air temperature sensors
• Limit sensors, e.g. for minimum limitation of the supply air temperature
• Reference sensors, e.g. for compensation of the room temperature as a function of
the outside temperature
• Dew point temperature sensors
• Measuring sensors, e.g. for measured value indication or for connection to a building
automation and control system

Technical data
Power supply
Safety extra-low voltage (SELV)
Operating voltage (QAM2161.040
AC 24 V ±20%, or DC 13.5...35 V or AC/DC 24 V class 2 (US)
Operating voltage (QAM2171.040)
DC 13.5…35 V or DC 24 V class 2 (US)
Frequency
50/60 Hz at AC 24 V
External supply line protection (EU)
Fuse slow max. 10 A or
Circuit breaker max. 13 A Characteristic B, C, D according to EN 60898 or
Power source with current limitation of max. 10 A
Power consumption
≤1 VA
Perm. cable lengths Copper cable 0.6 mm dia. Copper cable 1 mm2 Copper cable 1.5 mm2 50 m 150 m 300 m
Measuring range
−50...+50 °C (R2 = factory setting), 0...50 °C (R1), −35...+35 °C (R3)
Probe Probe length Minimum bending radius 0.4 m 10 mm
Sensing element
Pt 1000
Time constant
30 s at 2 m/s
Dead time
<1 s
Measuring accuracy in the range of –25...+25 °C –50...+50 °C ±0.75 K ±0.9 K