Johnson Controls EP-8000-4 Transducer

The Johnson Controls EP-8000-4 is a high-performance electro-pneumatic transducer engineered for precision in demanding HVACR applications. As a high-volume relay output unit, it excels at converting 4-20 mA input signals into a stable 3-15 psig pneumatic output. This model is specifically designed for interfacing electronic controllers with pneumatic actuators, ensuring seamless proportional control for dampers and valves. Unlike low-volume alternatives, the integrated relay provides the necessary air capacity to drive larger pneumatic loads without the need for additional boosters. Built with a compact, simple design, it features barbed air connections for 5/32 or 1/4 inch O.D. tubing, easing direct mounting on pneumatic valve actuators or surfaces. Technicians benefit from the hypodermic needle test point for rapid pressure verification and fully adjustable zero and span potentiometers that facilitate accurate field calibration. This transducer ensures high accuracy with low hysteresis, making it a reliable choice for retrofit installations and sequencing via V-9502 or D-9502 positioners.

• High-Volume Relay Output: Delivers superior air flow capacity for fast actuator response without extra equipment.
• Precise Signal Conversion: Accurately transforms standard 4-20 mA current to 3-15 psig output for linear control.
• Versatile Mounting: Supports surface mounting or direct mounting on pneumatic actuators to save space.
• Ease of Calibration: Features accessible zero and span adjustments and a dedicated test point for efficient troubleshooting.
• Enhanced Compatibility: Ideal for sequencing valve actuators and integrating legacy pneumatic systems with modern DDC controllers.

Is an external restrictor required for the EP-8000-4?
No, since this is a high-volume relay output model, it does not require the 0.007-inch restrictor used with 1-pipe low-volume versions.

Can this unit be mounted in any orientation?
For optimal performance and to maintain calibration, the EP-8000 series must be mounted within 5 degrees of vertical.

What is the recommended supply air quality?
To prevent leakport clogging and ensure long-term performance, use clean, dry, and oil-free air (nominal 20 psig) with an inline air filter like the A-4000-8001.

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.