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preventing heat exchanger damage and ensuring the safe operation of commercial and industrial heating systems
most economical way of bypassing excess static pressure in multi-zone applications
Dual Voltage Versatility: Compatible with both 115V and 230V power configurations for flexible installation
Featuring a 1 3/16 inch bore and a 2 1/2 inch outer diameter
The included number 3 orifice and patented bulb strap guarantee optimal thermal contact for reliable system modulation
Siemens Building Technology QAA2212.EWNN Sensor 320788-704 preventing heat exchanger damage andThe Siemens Building Technology QAA2212. EWNN Sensor is a high precision room temperature sensor designed for accurate environmental monitoring in commercial and industrial HVACR control systems. This passive sensor utilizes a Platinum 1K Ohm Pt RTD (Resistance Temperature Detector) with a 385 alpha coefficient, ensuring stable resistance output and long term reliability without the drift common in lower grade components. Built for seamless
US$ 165.00
US$ 32.00
US$ 34.00