Veris Industries EP2121S Transducer

The Veris Industries EP2121S is a high-performance electro-pneumatic transducer designed to convert a standard 4-20mA input signal into a proportional 3-15 psi pneumatic output. This unit is the direct replacement for the legacy EP2121S1, engineered specifically for building automation systems and HVAC control loops that require precise pneumatic valve actuation and damper positioning. Featuring an integrated auto-load regulation (ALR) feature, the EP2121S maintains consistent branch line pressure even during fluctuations in supply air, ensuring high control stability and transducer accuracy. Built with a rugged enclosure, this EP transducer is rated for 0-20 psi operation, making it a reliable solution for industrial pneumatic control systems. Its field-selectable options and easy DIN-rail or panel mounting satisfy the rapid deployment needs of mechanical contractors and field technicians maintaining critical HVAC pneumatic systems.

Key Benefits

• Field-Proven Reliability: Direct replacement for the EP2121S1, ensuring seamless integration into existing control panels without extensive recalibration.
• Enhanced Precision: Integrated auto-load regulation (ALR) provides superior branch-line stability against varying supply pressures.
• Technical Versatility: Ideal for converting electronic DDC signals to 3-15 psi pneumatic outputs for varied commercial HVAC applications.
• Contractor-Friendly Install: Compact footprint allows for efficient mounting in tight control cabinets, reducing labor time during retrofits.

Common Questions

Is the EP2121S compatible with legacy EP2121S1 installations?
Yes, the EP2121S is the manufacturer-designated direct replacement for the EP2121S1, maintaining the same form factor and wiring configurations for straightforward field replacement.

What is the function of the ALR in this transducer?
The Auto-Load Regulation (ALR) feature ensures that the output pressure remains constant despite changes in the airflow requirements of the downstream pneumatic actuators, preventing control hunting.

Can this unit handle high supply pressures?
The EP2121S is optimized for standard 0-20 psi output ranges typical in commercial pneumatic control loops. Always ensure your supply air is clean, dry, and regulated within the manufacturer's specified maximum limits to prevent diaphragm damage.

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.