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Model 66 Amplifying and Reducing Relay

Brand: Siemens AG
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The Model 66 Amplifying and Reducing Relays are used to increase or decrease control-circuit pressure signals.
Features
  • Pneumatic signal conditioning provides control circuit design flexibility 
  • Powder coating provides improved corrosion resistance
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The Model 66 Amplifying and Reducing Relays are used to increase or decrease control-circuit pressure signals.
Features
  • Pneumatic signal conditioning provides control circuit design flexibility 
  • Powder coating provides improved corrosion resistance
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Specifications

Brand

Operating Temperature

  • -40° to 180° F (-40° to 82° C)

Material of Construction

  • Brass
  • Stainless Steel
  • Aluminum
  • Neoprene

Supply Pressure

  • Maximum 80 psig (550 kPa)
  • Minimum 1 psi (7 kPa) Above Max. Required Output
  • Normal 20 psig (140 kPa)

Range Limit

  • 80 psig Max. for Input or Output - Whichever Limits

Overrange Limit

  • 100 psig (690 kPa) at Any Connection

Maximum Output Pressure

  • Within 0.1 psi (0.7 kPa) of Supply

Minimum Output Pressure

  • < 0.4 psig (3 kPa) with Zero Output

Ratio Accuracy

  • Within 1 % of Normal Ratio

Linearity

  • ± 1 % of Output Span

Reproducibility

  • Within 0.02 psi (0.15 kPa)

Response Level

  • 0.2” H₂O (5 mmH₂O)

Flow Capacity

  • 2.2 scfm Min.

Air Consumption

  • 0.12 scfm Max.

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