Johnson Controls EP-8000-2 Transducer

The Johnson Controls EP-8000-2 is a professional-grade electro-pneumatic transducer designed for high-performance building automation and industrial control. As a high-volume relay output model, this unit is engineered to convert a proportional 0.25 to 9.5 VDC electronic signal into a linear 0.5 to 19 psig pneumatic pressure signal. Unlike low-volume versions, the EP-8000-2 features an integrated relay for increased air flow capacity (up to 1600 scim), making it a reliable solution for driving larger pneumatic actuators or multiple branch line devices without the need for additional boosters. The direct-acting logic ensures that as the input voltage increases, the output pressure rises proportionally.

For fieldwork efficiency, the EP-8000-2 includes factory-set zero and span adjustments that are fully field-adjustable to meet specific site requirements. Its compact polysulphone body features barbed air connections compatible with 5/32" or 1/4" O.D. polytubing. A built-in hypodermic needle test point allows technicians to verify pneumatic control signal accuracy without breaking the line. This transducer is ideal for HVAC retrofit projects where modern electronic controllers must interface with legacy pneumatic valve actuators or damper systems.

• High Air Capacity: Integrated high-volume relay provides up to 1600 scim for rapid actuator response.
• Precise Signal Conversion: Maintains low hysteresis and high linearity for accurate proportional control.
• Field Serviceability: Accessible zero and span adjustment screws for precise calibration at the unit.
• Versatile Mounting: Surface-mount design can also be direct-mounted to pneumatic valve actuators using separate kits.
• Diagnostic Port: Integrated test point facilitates rapid troubleshooting of the output pressure signal.

Does this unit require a separate restrictor?

No. While low-volume EP-8000 models require an external restrictor, the EP-8000-2 high-volume relay model does not require one for standard operation.

What is the maximum supply pressure?

The unit typically operates on a nominal 20 psig air supply, with a maximum limit of 25 psig. Ensure the air supply is clean, dry, and oil-free.

Can I use this with a 4-20 mA signal?

The EP-8000-2 is a voltage-input model (0.25–9.5 VDC). For 4-20 mA current loops, the EP-8000-4 is the appropriate model for the same high-volume output applications.

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.