描述

Features

• 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 / 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)

Applications

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 (see Data Sheet N5146)