Siemens QFM2140

The Siemens QFM2140 is a duct sensor designed for reliable temperature measurement in HVAC and ventilation systems. It operates on 24 VAC or 13.5-35 VDC power and provides a 0-10 VDC signal output for easy integration with control systems. The sensor features screw terminals for straightforward wiring and comes with a 90 to 154 mm immersion length, which allows for flexible installation depth. A flange fixing ensures secure mounting within ducts, while its IP54 rating offers protection against dust and water ingress, making it suitable for a range of indoor environments. This sensor operates effectively within a temperature range of -35 to 50 degrees Celsius. The Siemens QFM2140 is available through BSP Automation, providing a dependable option for your duct temperature sensing needs.