DP140005U21C Johnson Controls Differential Pressure Transducer

Overview

The Johnson Controls DP140005U21C is a low differential pressure transducer designed for precise and reliable pressure measurement in demanding HVAC and building automation systems. It senses differential or gauge static pressure in air and nonconducting gases, converting it into a stable output signal. Featuring a compact and rugged design with an IP67-rated enclosure, this unit is well-suited for tight mechanical spaces and harsh environments where moisture or dust is a concern.

Features

• High-precision dead-ended capacitive sensing technology requiring minimal amplification
• Built-in reverse wiring protection and internal regulation to prevent board damage
• Rugged IP67-rated housing protecting internal circuitry from water and dust ingress
• Fire-retardant case approved to UL 94 V-0 standards
• Easy field installation with an integrated 1/4-inch push-on barb fitting for secure tubing connection
• Accessible zero and span potentiometers under the cover for field adjustment if necessary

Specifications

• Pressure Range: 0 to 5.0 inches Water Column (W.C.)
• Measurement Type: Unidirectional low differential pressure
• Output Signal: 4 to 20 mA loop-powered current loop
• Supply Voltage / Excitation: 24 VDC
• Accuracy: Plus or minus 1% of full scale
• Process Connection: 1/4-inch push-on barb fittings for standard pneumatic tubing
• Electrical Connection: 1/2-inch threaded conduit opening
• Operating Temperature Limits: 0 to 150 degrees Fahrenheit (-18 to 65 degrees Celsius)
• Media Compatibility: Air or nonconducting gases only (not for liquids or corrosive gases)

Applications

• Static pressure monitoring in commercial HVAC air ducts and building automation loops
• Filter status and blockage indication across filter banks
• Air handling unit (AHU) monitoring and variable air volume (VAV) box control
• Mission-critical pressure control in commercial, industrial, and cleanroom environments