Johnson Controls EPC2GB Gauge

The Johnson Controls EPC2GB is a high-performance analog-to-pneumatic transducer specifically engineered for precision control in commercial HVACR systems. As a no-bleed pneumatic gauge and interface device, it utilizes a dual-valve system to regulate branch line pressure without the constant air consumption typical of traditional interfaces. This unit is designed for versatility, featuring four jumper-selectable HVAC input signals: 0-5 VDC, 0-10 VDC, 0-15 VDC, and 0-20 mA. The EPC2GB electronic to pneumatic transducer provides a linear 0-5 VDC feedback signal, allowing for real-time monitoring of the resultant branch pressure by your DDC controller. Encased in a rugged, painted steel housing with a standard 1.5-inch pressure gauge, this transducer is built for panel mounting in demanding mechanical environments. With a 750 SCIM capacity, the Johnson Controls EPC2GB ensures rapid response times and stable operation for long branch line runs and multi-actuator configurations.

• Zero Air Bleed: Dual-valve design eliminates air consumption at setpoint, reducing strain on the main air compressor.
• Flexible Input/Output: Field-selectable jumpers allow for easy configuration of multiple voltage or current inputs and output ranges (0-10, 0-15, 0-20 psig).
• Manual Override: Integrated toggle switch allows for local manual control during commissioning or troubleshooting, with an override status feedback contact for the controller.
• Precision Calibration: Reliable 1% accuracy at room temperature with field-adjustable offset and span pots for exact pressure tuning.
• Fail-Last Position: In the event of a power failure, the branch line pressure remains constant, provided the downstream line is leak-free.

• How do I calibrate the EPC2GB for my specific actuator range? Use the on-board OFFSET and SPAN potentiometers. Set the minimum pressure with the OFFSET pot in AUTO mode at minimum signal, then switch to MANUAL to set the maximum pressure using the SPAN pot.
• Can this unit be mounted in any orientation? Yes, the EPC2GB is not position-sensitive; however, vertical mounting with brass fittings pointing down is recommended to prevent condensation from affecting the internal sensor.
• What prevents the valves from clogging? The main air port is protected by an integral 80–100 micron filter, ensuring long-term reliability in standard pneumatic environments.

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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.