Schneider Electric (Barber Colman) 2232-150 Humidity Transmitter

The Schneider Electric (Barber Colman) 2232-150 is a rugged, one-pipe force-balance duct humidity transmitter engineered for precise atmospheric monitoring in pneumatic HVAC systems. Designed for direct duct mounting, this instrument senses a full 0 to 100% relative humidity range and converts it into a linear 3-15 psig output signal. This signal provides critical data to receiver-controllers and remote gauges, ensuring stable modulation of humidifiers or air handling units. Utilizing a high-sensitivity hygroscopic nylon ribbon element and a precision ball valve for pneumatic feedback, the 2232-150 maintains repeatable performance even in demanding industrial environments.

For the field technician, the 2232-150 offers simplified installation with a compact profile and standard 1/8-27 FNPT connections. It operates effectively on a standard 20 psig main air supply (30 psig max) and includes an internal filter to protect the pneumatic assembly from particulates. All internal components are corrosion-resistant, which is vital for maintaining long-term accuracy in high-moisture applications. This unit is the primary solution for professionals requiring a dependable pneumatic humidity sensor to integrate with legacy and modern 3-15 psig control loops.

• High Precision Sensing: The hygroscopic nylon ribbon delivers fast response times across the entire 0-100% RH spectrum.
• Pneumatic Integration: Seamlessly compatible with standard 3-15 psig pneumatic control systems and receiver-controllers.
• Durable Construction: Corrosion-resistant internal parts and a built-in air filter ensure reliability in duct-mounted environments.
• Field Proven Design: Force-balance technology provides stable relative humidity feedback without the drift associated with lower-grade sensors.

What is the proper air supply for this transmitter?
The Schneider Electric 2232-150 requires clean, dry control air. The standard operating pressure is 20 psig, with a maximum allowable pressure of 30 psig to avoid damage to the internal ball valve assembly.

Can this unit be mounted in any orientation?
Yes, as a veteran-grade transducer, it is designed to operate accurately when mounted in any position, provided the sensing element is fully exposed to the air stream within the duct.

Does it include mounting hardware?
Standard shipments typically include the necessary overlays (21-596, 21-597, and 21-598) and sheet metal screws required for immediate HVAC duct installation.

This item is not eligible for free shipping.

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.