Description
The Siemens QFA3212.FWSN is a professional-grade room relative humidity (RH) sensor engineered for building automation and HVAC control applications. Featuring a selectable analog output — choose between 0–10 Vdc or 4–20 mA — this sensor integrates seamlessly into a wide range of building management systems and DDC controllers. Its onboard display and local override capability make commissioning and field adjustment straightforward for technicians.
Key Features
- Selectable output signal: 0–10 Vdc or 4–20 mA for flexible system integration
- Measurement range: 0–100% relative humidity (RH)
- Integrated temperature sensing element: 1 kΩ Pt 385a (Platinum RTD)
- Local LCD display for on-site RH and temperature readings
- Local override function for convenient field adjustments
- Terminal block connection type for reliable, secure field wiring
- Designed for room/wall-mount installation in commercial and light industrial environments
Output & Signal Specifications
- Output Signal: 0–10 Vdc (selectable) or 4–20 mA (selectable)
- Humidity Range: 0–100% RH
- Temperature Element: 1 kΩ Pt 385a (Platinum RTD)
- Connection: Terminal block
Applications
- Commercial building HVAC humidity monitoring and control
- Building automation system (BAS/BMS) integration
- Demand-controlled ventilation (DCV) systems
- Energy management and indoor air quality (IAQ) monitoring
Why Choose the Siemens QFA3212.FWSN?
Siemens Building Technologies sensors are trusted across commercial HVAC and building automation applications worldwide. The QFA3212.FWSN combines dual-output flexibility with an integrated temperature RTD, a clear local display, and override capability — delivering everything needed for accurate room environment monitoring in a single, compact wall-mount device.
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