The Siemens QAA2061 Temperature Sensor delivers dependable, high-accuracy ambient room temperature acquisition engineered specifically for commercial office towers, healthcare facilities, educational institutions, and automated building management systems (BMS).

Precision Climate Feedback with the Siemens QAA2061 Temperature Sensor

Operating as an active room temperature transmitter, the Siemens QAA2061 Temperature Sensor measures indoor ambient temperatures and converts the thermal value into a continuous, linear 0…10 V DC analog voltage output. Designed for facilities requiring strict thermal comfort and energy efficiency, the active transmitter circuitry compensates for long wiring runs to central control panels, eliminating the resistance-induced signal errors typical of passive sensing elements.

The unit features user-selectable measurement ranges configured directly via internal jumper blocks, supporting spans of 0…50 °C, −35…+35 °C, or −50…+50 °C. This range versatility allows system integrators to standardize on a single field hardware model across standard occupied office zones, temperature-controlled pharmaceutical storage rooms, and cold storage monitoring corridors.

Packaged in an unobtrusive architectural casing, the sensor incorporates natural convective airflow slots that promote rapid thermal air exchange across the sensing core while shielding sensitive electronic components against mechanical damage and room dust. The two-piece baseplate and snap-on cover assembly allows quick electrical termination onto standard wall-mounted conduit junction boxes or direct drywall surfaces.

Key Features and Engineering Advantages

• Active 0–10 V DC Output: Provides a robust, interference-free analog signal suitable for direct connection to DDC input cards across extended cable lengths.
• Field-Selectable Measuring Spans: Internal jumpers allow quick switching between 0…50 °C, −35…+35 °C, and −50…+50 °C measuring ranges without software reprogramming.
• High Metrological Stability: Platinum-based sensing technology delivers exceptional repeatability, zero calibration drift, and ±0.3 K accuracy at standard room ambient conditions.
• Universal BMS Compatibility: Direct plug-and-play wiring to Siemens Desigo, Synco, and major third-party automation controllers accepting standard analog voltage inputs.
• Architectural Form Factor: Clean, low-profile wall-mount housing blends unobtrusively into commercial offices, school classrooms, and public facilities.

Technical Specifications

Industrial Applications and Process Integration

The Siemens QAA2061 Temperature Sensor provides critical thermal feedback across commercial, institutional, and light industrial facilities, including:

• Variable Air Volume (VAV) terminal box room temperature regulation and reheat coil modulation.
• Fan coil unit (FCU) multi-zone space heating and chilled water valve throttling.
• Central Air Handling Unit (AHU) space air balancing and supply air reset strategies.
• Cleanroom secondary anterooms, pharmaceutical storage closets, and server room perimeter monitoring.

Frequently Asked Questions

What is the advantage of an active 0–10 V DC sensor over a passive RTD sensor?
Passive sensors (like Pt1000 or NTC thermistors) suffer from resistance errors induced by long copper cable runs. The Siemens QAA2061 Temperature Sensor conditions the temperature signal directly at the measurement point into an active 0…10 V DC output, allowing signals to travel over extensive building wiring runs without line resistance skew.

How is the temperature measuring range adjusted?
The measuring range is configured mechanically via jumper pins situated on the internal printed circuit board. Technicians can set the output span to 0…50 °C, −35…+35 °C, or −50…+50 °C prior to snapping the housing cover closed.

Where should the room sensor be mounted for optimal thermal tracking?
The unit should be wall-mounted approximately 1.5 meters above the finished floor on an interior partition wall with good convective air circulation, avoiding direct sunlight, drafty doorways, radiant heat sources, and direct discharge from air supply diffusers.