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Room sensor for humidity (DC 0...10 V) and temperature (DC 0...10 V), with digital Display
Brand: SIEMENS
Category:
SIEMENS Simatic Control Systems
Specifications
SKU: QFA2068D
The Siemens QFA2068D is a wall-mounted room sensor designed to measure both relative humidity and temperature in building automation and HVAC control systems.
Important Lifecycle Note: This specific model is currently in its phase-out period by Siemens HIT. While it remains widely available through industrial automation stockists and spare parts distributors, it is critical to keep this lifecycle status in mind for new, long-term building deployments.
Key Technical Specifications
The electrical and environmental specifications provided by the manufacturer Siemens HIT include:
- Operating Voltage: AC/DC 13.5 to 35 V (typically compatible with standard 24V automation loops).
- Power Consumption: 0.4 VA.
- Temperature Range: -15 °C to +50 °C.
- Humidity Range: 0% to 100% relative humidity (r.h.).
- Signal Outputs: Configurable analog outputs for DC 0...10 V or DC 4...20 mA, along with passive LG-Ni1000 capabilities for temperature.
- Dimensions & Housing: 90 mm x 100 mm x 36 mm; styled in a neutral white/gray casing.
Key Features
- Digital Display: The "D" suffix in the model number designates an integrated digital LCD screen. This screen automatically toggles every 5 seconds to alternate between displaying the active room temperature and relative humidity.
- Measurement Compensation: To guarantee long-term accuracy, the physical design offsets the internal circuit layout to minimize the impacts of self-heating on the measurement probes.
- Integration Ready: The analog output signals can link cleanly to programmable logic controllers (PLCs), central SCADA systems, or standalone HVAC acquisition platforms.
Are you looking to replace an existing unit that failed, or are you trying to find the recommended Siemens replacement model since this one is in phase-out?
If you are dealing with a fault, let GEASB know the error behavior so GEASB can help troubleshoot.
Inquiry - Room sensor for humidity (DC 0...10 V) and temperature (DC 0...10 V), with digital Display
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SIEMENS Simatic Control Systems
