KOSO EP800 electro-pneumatic positioner, 4–20 mA, single and double acting

KOSO EP800 is a classic analog electro-pneumatic positioner without digital diagnostics. It converts a 4–20 mA signal (as well as 4–12 and 12–20 mA split range) into air pressure and holds the stem using feedback, with linear characteristic.

Three versions: EPA800 for single-acting actuators, EPC800 for double-acting and EPB800 specifically for the 5200LA diaphragm actuator. Supply 140–700 kPa. Housings: weatherproof, flameproof and intrinsically safe. Temperature: standard −20…+80 °C, low temperature −50…+60 °C, high temperature 0…+100 °C. Pneumatic Rc 1/4, electrical G1/2.

Key features:

• Simple analog design, predictable service
• Dedicated EPB800 version for the 5200LA actuator
• Split range 4–12 and 12–20 mA
• Weatherproof, Ex d and Ex i housings
• Low air consumption

Specifications:

• Models: EPA800 single acting, EPC800 double acting, EPB800 for 5200LA
• Input signal: 4–20, 4–12, 12–20 mA, linear characteristic
• Supply pressure: 140–700 kPa
• Linearity / hysteresis: single ±1.0 % / 0.5 %; double ±1.5 % / 0.8 %
• Sensitivity / repeatability: single 0.1 % / 0.2 %; double 0.2 % / 0.3 %
• Air consumption: single approx. 5 Nl/min at 140 kPa; double approx. 15 Nl/min at 400 kPa
• Flow capacity: single up to 175 Nl/min at 140 kPa; double up to 400 Nl/min at 400 kPa
• Housing: weatherproof, explosion proof, intrinsically safe
• Connections: air Rc 1/4, electrical G1/2
• Ambient temperature: −20…+80 °C; options −50…+60 and 0…+100 °C

Application: Positioning of pneumatic valves without HART, standard match for the 5200LA actuator, split range on two valves from one signal.

Before ordering: The positioner has no HART or digital diagnostics. Before ordering, specify actuator type, action and housing version.