MAMAC Systems EP-313-020 Electropneumatic Transducer

The MAMAC Systems EP-313-020 Electropneumatic Transducer is a rugged, service-grade solution designed to convert analog electrical signals into a linear 0-20 PSIG pneumatic output. This unit features field-selectable inputs, allowing technicians to toggle between 4-20 mA, 0-5 VDC, or 0-10 VDC without hardware swaps. Built for the high-demand environments of building automation, it utilizes a 100% solid-state piezoresistive silicon pressure sensor and low-wattage poppet valves, ensuring zero air consumption at steady state—a critical factor for reducing compressor load. The integrated manual override provides two push-button switches for direct air pressure adjustment, simplifying commissioning and emergency sequencing. Its compact steel chassis fits into tight control panels and is DIN rail mountable for streamlined installation. With a high air flow capacity and a maximum 40 psig supply pressure rating, this transducer delivers high-performance HVAC signal conversion with excellent repeatability and resistance to supply line fluctuations.

• Zero Air Consumption: Sophisticated electronic feedback eliminates constant bleeding, lowering operational costs and compressor wear.
• Universal Input Flexibility: Field-configurable 4-20mA, 0-5VDC, or 0-10VDC inputs ensure broad compatibility with any building automation system.
• High Accuracy: Delivers ±1% full-scale accuracy for precise control of pneumatic dampers and actuators.
• Manual Override Switch: Independent push-buttons allow for manual branch line control during commissioning or controller failures.
• Compact Footprint: Designed for high-density panel mounting with the smallest enclosure footprint in the industry.

Does this unit consume air when the output is stable?
No, the EP-313-020 uses poppet-style solenoid valves that only cycle when a pressure change is requested, resulting in zero steady-state air consumption.

Can I use this with 24VAC or 24VDC?
Yes, the device is designed for 18-28 VAC/VDC supply voltages, making it compatible with standard HVAC power supplies.

What happens if the electrical signal is lost?
While the unit holds the last pressure state, it can be paired with an EP-350 fail-safe module if your application requires a bleed-down to zero pressure upon power failure.

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.