DP140X25B21D Johnson Controls Differential Pressure Transducer

Overview

The Johnson Controls DP140X25B21D is a precision low differential pressure transducer designed to accurately measure low differential pressures in demanding HVAC and building automation applications. It uses a trusted capacitive sensing element that requires minimal amplification, offering an excellent price-to-performance ratio and long-term stability. Featuring a robust design and a small footprint, it is engineered to sense differential or gauge static pressure reliably.

Features

• Excellent price-to-performance ratio with trusted premium sensing technology
• Fire-retardant case, UL 94 V-0 approved, and CE/RoHS compliant
• Easy installation with integral mounting tabs, front-facing pressure connections, and a screw terminal strip
• IP67-rated enclosure providing robust, wash-down capable protection against dust and moisture
• Reverse wiring protection and internal regulation

Specifications

• Pressure Range: ±0.25 inches W.C. (Water Column)
• Type: Bidirectional
• Output Signal: 4 mA to 20 mA analog output
• Accuracy: ±0.5% of full scale (FS)
• Excitation: 24 VDC or 24 VAC
• Enclosure Rating: IP67
• Process Connection: 1/4 inch push-on barb fitting
• Electrical Connection: 1/2 inch conduit fitting

Applications

• Monitoring very low differential pressures across air filters, coils, and air-handling equipment
• Measuring pressure drops in coils and heat exchangers
• Damper and Variable Air Volume (VAV) box pressure sensing
• Cleanroom and laboratory airflow control and static pressure monitoring
• Integration with building automation systems (BAS) and air flow stations