Schneider Electric (Barber Colman) 2252-703 Temperature Transmitter

The Schneider Electric 2252-703 Temperature Transmitter, formerly under the Barber Colman brand, is a pneumatic field device designed for accurate linear conversion of sensed temperature into a proportional 3 to 15 psi output signal. This remote bulb temperature transmitter features a 42-inch capillary and a 1/4" x 2-1/2" sensing element, making it ideal for duct mounting or outdoor air temperature monitoring. With a fixed operating range of -40 to 160°F and a 200-degree span, this unit provides the precise pneumatic control signaling required for complex HVAC sequences. The thermal element is rated for a maximum temperature of 391°F, ensuring durability in high-limit scenarios. Designed for seamless integration into existing pneumatic automation systems, the 2252-703 is a reliable solution for technicians maintaining legacy controls that require consistent HVAC sensor calibration and analog temperature transmission in demanding environments.

• Application Versatility: Suitable for both air and liquid sensing when used with appropriate copper or stainless steel wells.
• Linear Output: Provides a standard 3 to 15 psi signal for high-precision interfacing with pneumatic receivers and controllers.
• Robust Construction: Built to withstand ambient temperatures at the transmitter head between -40 and 150°F.
• Standardized Fitment: Features a compact 1/4" bulb diameter for easy installation into standard duct brackets or thermowells.

How do I calibrate the pneumatic output on the 2252-703?
Calibration involves adjusting the zero and span screws while referencing a precision gauge and a known temperature source to ensure the 3 to 15 psi output aligns with the -40 to 160°F range.

Can this transmitter be used in hazardous locations?
As a purely pneumatic device, it does not have electrical components, making it inherently suitable for many environments where electronic sensors might require explosion-proof housing, though local codes should always be verified.

What is the purpose of the 42-inch capillary?
The capillary allows for the remote mounting of the transmitter body away from the sensing point, protecting the main assembly from extreme conditions while the bulb resides in the airstream or medium.

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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.