York 025-28678-102 Pressure Transducer

The York 025-28678-102 Evaporator Pressure Transducer is a precision-engineered HVAC OEM alternative for critical pressure monitoring in commercial chiller systems. As an essential refrigerant pressure sensor, this unit converts evaporator side pressure into a stable 0-5 VDC linear signal, allowing your unit controller to maintain optimal superheat and prevent coil freeze-up. Built for the rigors of mechanical rooms, this 025-28678-102 transducer features a rugged construction that provides a reliable BAS pressure feedback loop, ensuring the chilled water plant operates within the design envelope.

For technicians servicing York centrifugal or screw chillers, this transducer is a direct-fit replacement that eliminates the calibration drift common with aged sensors. The evaporator pressure measurement accuracy is vital for modulating expansion valves and protecting the compressor from liquid slugging. When installing, verify the mating harness for corrosion, as moisture infiltration at the plug is a common failure point for these sensors in high-humidity environments.

• Precise Signal Output: Delivers a reliable 0.5V to 4.5V ratiometric or 0-5V analog signal to the York unit controller for real-time monitoring.
• Durable Construction: Engineered to withstand rapid pressure fluctuations and industrial vibration without losing calibration.
• Direct OEM Compatibility: Ensures seamless integration with existing software setpoints in York Millenium, MaxE, and YK series chillers.
• Rapid Response Time: Instantaneous pressure-to-voltage conversion allows for tighter control of the refrigeration cycle.

What is the common failure mode for this transducer?
Technicians frequently report signal "pegging" or erratic voltage readings due to moisture entry at the connector or internal diaphragm fatigue from constant cycling.

Does this unit require field calibration?
No, the 025-28678-102 is factory-calibrated; however, you should always verify the pressure readout against a calibrated manifold gauge during commissioning.

Is the wiring harness included with the sensor?
This part typically includes the transducer body only. If the existing connector is corroded or shows signs of greening, a new pigtail harness is recommended to ensure a watertight seal.

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.