Siemens Building Technology QAC2012U Temperature Sensor

The Siemens QAC2012U is a professional-grade 1000 ohm platinum RTD outdoor temperature sensor designed for demanding building automation systems (BAS) and HVAC operations. As a direct replacement for TE-6323P-1, this unit provides the precise outside air temperature (OSA) data required for critical control logic such as outdoor reset, chiller optimization, and economizer cooling. Featuring a Pt1000 sensing element with a 385 alpha coefficient, the QAC2012U ensures long-term stability and high accuracy across a broad operating range of -40 to 150 degrees Fahrenheit. The rugged metallic enclosure protects the internal RTD sensor from environmental interference while fitting standard 2x4 utility boxes for a streamlined field installation. This Siemens building technology component is engineered to integrate seamlessly with most North American controllers, facilitating accurate HVAC temperature monitoring and improving overall facility energy efficiency through reliable environmental feedback.

• Direct Technical Replacement: Exact cross-compatibility for the TE-6323P-1 and Barber-Colman TS-5851, ensuring no recalibration of existing controllers is necessary.
• Pt1000 RTD Precision: Utilizes a high-accuracy 1000 ohm platinum element for superior drift resistance compared to standard thermistors.
• Durable Construction: Heavy-duty metal housing designed specifically for outdoor industrial environments and extreme weather exposure.
• Universal Compatibility: Standard resistive output signal works with Siemens, Johnson Controls, and other major building automation platforms.

• What is the resistance curve for the QAC2012U? It uses a standard 1k Ohm Platinum RTD curve with a 385 coefficient, providing a predictable linear response for HVAC control systems.
• Does this require a dedicated power supply? No, as a passive resistive temperature sensor, it functions via the excitation voltage provided by your controller's analog input.
• How does the QAC2012U handle moisture? The metal enclosure and internal design are specifically engineered for outdoor air temperature sensing, effectively shedding precipitation and resisting humidity-induced signal noise.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.