Description
The Siemens QAA2212.FWSN is a precision room temperature sensor engineered for building automation and HVAC control applications. Featuring a Pt RTD sensing element with a 1k Ohm (385a) output signal, this sensor delivers accurate and stable temperature readings across a wide operating range, making it an ideal choice for commercial and light-industrial environments.
Key Features
- Sensing Element: Platinum RTD (Pt RTD), 1k Ohm, Alpha 385a output signal
- Temperature Range: 32°F to 122°F (0°C to 50°C)
- Connection Type: Terminal block for secure, reliable field wiring
- Integrated display for local temperature readout
- Built-in override capability for manual setpoint adjustment
- Designed for seamless integration with Siemens Building Technology BAS/DDC systems
Sensor Technology
The QAA2212.FWSN utilizes a Pt RTD element, known for its excellent linearity and long-term stability compared to thermistor-based alternatives. The 1k Ohm, 385a (European curve) configuration is compatible with a wide range of Siemens controllers and third-party BAS platforms, simplifying integration into new or retrofit projects.
Display & Override
The sensor’s built-in display allows occupants and technicians to view the current room temperature at a glance without the need for additional instrumentation. The override function enables authorized users to temporarily adjust the control setpoint directly at the sensor, improving occupant comfort and reducing service calls.
Installation
The terminal block connection type simplifies field wiring and reduces installation time. The sensor is suitable for wall-mount installation in occupied spaces and is designed for straightforward integration into Siemens HVAC and building automation control panels.
Specifications
- Brand: Siemens Building Technology
- Model / SKU: QAA2212.FWSN
- Sensor Type: Pt RTD
- Resistance: 1k Ohm
- Output Signal: 385a
- Temperature Range: 32°F – 122°F (0°C – 50°C)
- Connection: Terminal Block
- Features: Display, Override
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