EP-8000-3 Johnson Controls ELECTRO Pneumatic Transducer

Overview

The Johnson Controls EP-8000-3 is a precision electro-pneumatic (E/P) transducer engineered to convert electronic control signals into a proportional pneumatic output pressure signal for integration into DDC and pneumatic hybrid building automation systems. Designed for low-volume, non-relay output applications, this device provides a reliable interface for electronic controllers to communicate with pneumatic actuators, making it an ideal choice for設施 transitioning from legacy pneumatic systems to modern digital controls.

Features

• Proportional direct-acting signal conversion
• Low volume, non-relay output design optimized for smaller actuators and control loops
• Hypodermic needle test point for easy and quick output pressure measurement
• Barbed air connections compatible with 5/32 or 1/4 inch O.D. polytubing
• Compact, simple form factor suitable for panel mounting, surface mounting, or direct actuator installation
• Factory-set with fully adjustable zero and span settings to facilitate straightforward field calibration

Specifications

• Input Signal Range: 4 to 20 mA DC (30 mA DC maximum input)
• Output Pressure Range: 3 to 15 psig (21 to 103 kPa)
• Output Type: Low Volume, Non-Relay
• Supply Pressure: 18 to 25 psig (nominal 20 psig)
• Air Flow Capacity: 45 SCIM (12.3 mL/s) maximum at 20 psig supply
• Linearity: 5% maximum of output span between 3 to 15 psig
• Hysteresis: 0.5 psig typical
• Electrical Connections: Two-wire terminal block for 18 AWG stranded wire
• Enclosure Rating: IP 20 (IEC 60529)

Applications

• Pneumatic valve and damper actuator control
• DDC-to-pneumatic interfacing in hybrid HVAC systems
• Commercial building automation and energy management systems
• Air handling unit and VAV box control loops
• Retrofit applications integrating modern electronic controllers with legacy pneumatic infrastructure