Schneider Electric (Barber Colman) HKS-5033 Humidity Transmitter

The Schneider Electric HKS-5033 is a precision-engineered pneumatic humidity transmitter designed for reliable room-level relative humidity sensing in commercial HVAC systems. This direct-acting device converts sensed moisture levels into a proportional 3-15 psig pneumatic signal, enabling seamless integration with legacy pneumatic controllers and building automation systems. Built for wall-mount applications, the HKS-5033 features a non-adjustable 10 to 90% RH sensing range, ensuring stable performance without the drift often associated with electronic sensors in harsh environments. The unit utilizes a 5/32" O.D. plastic tubing connection for straightforward air line installation. As a replacement for legacy Barber Colman HKS-5033 units, this transmitter maintains strict calibration accuracy, critical for maintaining setpoints in hospitals, schools, and industrial facilities. Its mechanical simplicity eliminates the need for external power, relying entirely on compressed air systems for operation. For contractors managing pneumatic HVAC controls, the HKS-5033 remains a standard-issue component for maintaining precise indoor environmental quality through robust, time-tested sensing technology.

• Direct Acting Output: Provides a linear 3-15 psig signal directly proportional to the 10-90% relative humidity range.
• Simplified Installation: Standard 5/32" O.D. pneumatic air connections ensure compatibility with existing pneumatic tubing infrastructure.
• Wall Mount Versatility: Designed for optimal airflow sensing in room environments to provide accurate relative humidity monitoring.
• Pneumatic Reliability: Operates efficiently without electronic circuitry, reducing risk of failure in areas susceptible to electrical interference.
• Schneider Electric Engineering: Manufactured to the high tolerances required for commercial HVAC maintenance and repair.

How do I calibrate the HKS-5033 for my specific application?
The HKS-5033 is a factory-calibrated, non-adjustable unit. If your 3-15 psig output signal does not align with your HVAC pneumatic controller, verify the supply air pressure and check for leaks in the 5/32" tubing before troubleshooting the transmitter sensing element.

Can this unit replace Barber Colman pneumatic sensors?
Yes, the Schneider Electric HKS-5033 is the direct technical successor to the Barber Colman series, maintaining the same form factor and direct acting humidity sensor specifications for easy field replacement.

What supply pressure is required for this humidity transmitter?
The unit typically operates on a stable 20 psig supply air pressure to ensure a clean 3-15 psig output signal across the full RH percentage spectrum.

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.