Johnson Controls DP140025U21D Pressure Transducer

The Johnson Controls DP140025U21D is a high-precision low differential pressure transducer engineered for monitoring air and compatible gases in demanding HVACR environments. This unit features a 0-25"wc pressure range with unidirectional sensing capabilities, providing a reliable 4-20mA output signal for seamless integration into building automation systems (BAS). Built for field durability, the IP67-rated housing protects internal circuitry against moisture and dust, while the 1/4" push-on barb fitting ensures secure process connections. As the direct replacement for DPT2641-025D, this transducer maintains a plus/minus 0.5% accuracy rating, making it an essential component for static pressure monitoring, cleanroom pressure control, and VAV system optimization. For technicians requiring stable differential pressure sensor performance in high-moisture areas, the DP140025U21D delivers industrial-grade signal conditioning and HVAC pressure monitoring reliability without the drift common in lower-tier components.

Technical Specifications & Key Benefits:

• Compatibility: Functional drop-in replacement for obsolete Setra and Johnson Controls models, specifically the DPT2641-025D.
• Signal Integrity: Standardized 4-20mA output signal allows for long cable runs with minimal electromagnetic interference.
• Environmental Protection: Features an IP67-rated housing, suitable for mechanical rooms where washdowns or high humidity are present.
• Precision Engineering: Achieves +/- 0.5% full-scale accuracy for critical air track and filter status applications.
• Installation Efficiency: Integrated 1/4" push-on barb fitting facilitates rapid connection to standard pneumatic tubing.

Common Installation Questions:

Is the DP140025U21D suitable for outdoor air plenum monitoring?
Yes, the IP67-rated housing provides the necessary ingress protection against moisture, though the 0-25"wc pressure range must be calibrated to your specific duct velocity requirements.

Can I use this transducer to replace a 0-10V signal sensor?
This specific model provides a 4-20mA output signal. If your controller is configured strictly for voltage, you will need a signal converter or must reconfigure the analog input on your BAS controller.

What is the orientation sensitivity for this unidirectional model?
While designed for high stability, always zero the Johnson Controls DP140025U21D in its final mounting position to account for any gravitational effects on the diaphragm, especially in low differential pressure applications.

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.