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Type 200 Precision Air Relay

Brand: ControlAir
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The Type 200 Precision Air Relay is a pilot-operated, multistage 1:1 relay with a positive and negative bias adjustment capability.

It accurately reproduces a signal pressure plus or minus the bias setting with consistent repeatability.

Output control and stability are maintained through a high-gain-servo balanced control mechanism activated by a highly sensitive stainless steel measuring capsule.
Features
  • Highly Accurate Controls output pressure to within 0.1% 
  • Positive and Negative Bias Capability When adjusted for positive bias, output is directly proportional to the input signal plus the bias setting. Output pressure can never go below the value of the bias setting regardless of signal pressure. When set for negative bias, the output pressure will remain at minimum until the signal pressure is some value greater than the negative bias 
  • Internal Bias Adjustment The standard Type 200 is provided with an internal bias adjustment screw, which prevents casual tampering with the bias setting 
  • External Bias Adjustment The Type 200EB is available with an optional external bias adjustment screw, for easy access to the bias setting 
  • High Relief Capacity The Type 200HR provides an increased exhaust capacity. Its highflow relief valve ensures quick “blow down” for release of downstream pressure 
  • Stable Output Highly stable under variable operating conditions

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Specifications

Brand

Flow Capacity (100 psig Supply, 20 psig Signal)

  • 14 scfm (396 Nl/min)

Supply / Output Port Size

  • 3/8” NPT
  • 3/8” BSP
  • 1/4” NPT
  • 1/4” BSP

Signal Port Size

  • 1/4” BSP
  • 1/4” NPT

Exhaust Capacity

  • Type 200EHR: 15 scfm (425 Nl/min)
  • Type 200HR: 11 scfm (311 Nl/min)
  • Type 200: 3 scfm (85 Nl/min)

Maximum Output Pressure

  • 120 psig (8 bar)

Maximum Signal Pressure

  • 120 psig (8 bar)

Maximum Supply Pressure

  • 150 psig (10 bar)

Sensitivity - Water Column

  • 1/8” (3.2 mm)

Supply Pressure Sensitivity

  • Less than .005 psig (1.7 bar) for A Change of 25 psi (1.7 bar) in Supply Pressure

Bias Range

  • -30 to + 100 psig (-2 to 6.7 bar)

Bleed Rate

  • < 0.08 scfm (2.3 Nl/min)

Ambient Temperature Limits

  • -20° to 160° F° (-29° to 71° C)

Body Materials

  • Aluminium

Other Materials

  • Derlin
  • Nitrile
  • Brass
  • Nickel

Documentation

Data Sheets

Document

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