MAMAC Systems EP-311-315 Transducer

The MAMAC Systems EP-311-315 Electropneumatic Transducer is a precision-engineered solution for converting analog electronic signals into a regulated 3-15 PSIG pneumatic output. Designed for high-performance building automation and industrial process control, this ultra-compact unit features a 100% solid state piezoresistive silicon pressure sensor that ensures ±1% FS accuracy and total immunity to supply line pressure fluctuations. Unlike traditional bleed-type transducers, the EP-311 series utilizes quiet, low-wattage poppet valves to achieve zero air consumption, significantly reducing compressor demand and operating costs. For maximum field flexibility, the device offers field selectable 4-20mA, 0-5Vdc, or 0-10Vdc inputs and handles a universal 18-28 VAC/VDC supply voltage. The rugged aluminum manifold and brass barb fittings provide reliable, leak-proof performance in demanding HVACR environments. This model is built without a manual override, focusing on streamlined, automated pressure management with high airflow capacity and integrated protection against short circuits or reverse polarity.

• High Accuracy: Piezoresistive silicon energy ensures a consistent ±1% FS output for precise damper and valve control.
• Energy Efficient: Zero air consumption design eliminates constant bleeding, preserving pneumatic system integrity.
• Universal Compatibility: Field-selectable analog inputs and universal power supply allow one unit to replace multiple fixed-input models.
• Rugged Construction: Durable steel chassis and aluminum manifold with brass fittings ensure longevity in mechanical rooms.
• Predictive Control: Advanced circuitry monitors the rate of pressure change to prevent "hunting" and over-correction.

Is this unit compatible with both vertical and horizontal mounting?
Yes, the solid-state sensor design makes the EP-311 series immune to mounting orientation, unlike older mechanical transducers.

What happens if the power supply is wired incorrectly?
The unit features built-in reverse polarity protection and short-circuit protection to prevent board damage during installation errors.

Can the output range be adjusted in the field?
While the primary range is 3-15 PSIG, non-interactive zero and span trimmers allow for precise calibration to match specific branch line requirements.

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.