Johnson Controls DPT2640-010D Pressure Transducer

The Johnson Controls DPT2640-010D is a high-precision very low differential pressure transducer designed for critical air monitoring in VAV systems and laboratory environments. Engineered for a unidirectional pressure range of 0 to 10 inches water column (" WC), it provides a stable 0-5 VDC output signal compatible with most BAS controllers. With a 0.5% full-scale accuracy rating, this unit utilizes a capacitive sensing element to detect minute pressure changes. The DPT2640 series is built for reliability in demanding commercial applications, maintaining performance across an operating temperature range of 0 to 175°F. Contractors often specify this model for static pressure monitoring and filter status indication. Its rugged construction ensures long-term calibration stability and resistance to overpressure conditions, making it a staple for technicians troubleshooting HVAC pressure sensors and airflow management systems.

Key Benefits:

• Superior 0.5% accuracy for precise airflow control in sensitive zones.
• Wide operating temperature threshold of 0 to 175°F ensures stability in mechanical rooms.
• Standard 0-5 VDC signal allows for seamless integration into standard building automation interfaces.
• Optimized for very low pressure sensing, ideal for cleanroom or hospital ductwork applications.
• Compact footprint facilitates easy installation in crowded control panels.

Common Questions:

How do I calibrate the zero point on the DPT2640-010D?
Technicians should ensure the ports are vented to atmosphere before using the onboard zero adjustment screw to align the 0 VDC output.

Is this sensor compatible with non-corrosive gases?
Yes, this differential pressure transmitter is specifically designed for use with air and non-ionic, non-corrosive gases typically found in HVAC systems.

What is the maximum overpressure limit for this 10" WC unit?
The sensing element is designed to withstand incidental overpressure, but exceeding the rated burst pressure can damage the capacitive diaphragm.

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.