Description
The Siemens QFM2171 is a professional-grade duct-mount relative humidity and temperature sensor engineered for building automation and HVAC control applications. Delivering accurate, continuous monitoring of both humidity and temperature directly within the airstream, this sensor is an ideal choice for air handling units, commercial HVAC systems, and energy management platforms.
Key Features
- Measures relative humidity across the full 0–100% RH range for comprehensive moisture monitoring
- Dual 4–20mA output signals for both relative humidity and temperature — industry-standard analog signals compatible with most BAS and DDC controllers
- Adjustable insertion depth probe ranging from 3.5 to 8 inches, accommodating a wide variety of duct sizes and installation configurations
- Terminal block connection type for secure, reliable field wiring
- No display model — ideal for installations where a local readout is not required, keeping costs lean
- Designed for duct installation to provide real-time airstream conditions
Specifications
- SKU: QFM2171
- Brand: Siemens Building Technology
- Measurement: Relative Humidity (RH) and Temperature
- Humidity Range: 0–100% RH
- Output Signal: 4–20mA (Humidity) and 4–20mA (Temperature)
- Probe Insertion Depth: Adjustable, 3.5 to 8 inches
- Connection Type: Terminal Block
- Display: None
- Mounting: Duct-mount
Applications
- Commercial and industrial air handling units (AHUs)
- Building automation systems (BAS) and direct digital control (DDC) platforms
- Energy management and demand-controlled ventilation systems
- HVAC humidity and temperature monitoring in supply or return air ducts
The Siemens QFM2171 combines the reliability of Siemens Building Technology with the flexibility of an adjustable probe and dual analog outputs, making it a versatile solution for any commercial HVAC sensing application.
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