ER1/ER2 Electronic Regulator

Brand: Wilkerson Corporation

Wilkerson’s electro-pneumatic series products consist of the ER1, the ER2, and the EPV. The ER1 / ER2 are an integrated pressure controller / mainline regulator capable of delivering accurate pneumatic pressures over a wide range of flow conditions. The EPV is a stand-alone highly accurate pressure controller. This integral system of two control valves and a feedback transducer, provides highly accurate and repeatable closed-loop control through instantaneous pressure adjustment.

The ER1 / ER2 and EPV are powered by 12-28 VDC, supplied by either a programmable logic controller (PLC) or an industrial regulator power supply. The units accept a variety of control inputs that include 0-10 VDC, 4-20 mA, or input from the internal integrated variable resistor.

An optional on-board LCD panel that reads true P2 pressure in either PSI or bar is available. This display is conveniently located in the top cap which can be removed for panel mounting or rotated 180° to suit specific requirements. The LCD panel is particularly useful for monitoring programmed pressures or for setting pressures in manual applications. An output signal of 0-10 VDC for feedback or SPC data monitoring is standard on all units.
Features
  • Optional LCD Panel Displays P2 Pressure in PSIG or bar 
  • Modern Design and Appearance 
  • Light Weight 
  • High Flow Capacity 
  • 5 Micron Filtration to Controller is Built-in

Specifications

Flow Capacity (ER1)

  • 1/4: 165 scfm (77.9 dm³/s)
  • 1/2 & 3/8: 200 scfm (94.4 dm³/s)

Flow Capacity (ER2)

  • 3/4, 3/8 & 1/2: 200 scfm (94.4 dm³/s)

Operating Temperature

  • 32° to 125° F (0° to 52° C)

Maximum Supply Pressure

  • 150 psig (10.3 bar)

Adjusting Range

  • 0 to 125 psig (0 to 8.6 bar)

Sensitivity

  • ± 0.8 % of Full Scale

Hysteresis / Repeatability

  • ± 0.8 % of Full Scale

Linearity

  • < 1.0 psig (0.6 bar)

Response

  • With Step Input 600 ms

Port Size

  • NPT / BSPP-G: 3/4
  • NPT / BSPP-G: 1/2
  • NPT / BSPP-G: 3/8
  • NPT / BSPP-G: 1/4

Weight (ER1)

  • 1.76 lb (0.8 kg)

Weight (ER2)

  • 2.43 lb (1.1 kg)

Documentation

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