Biasing pneumatic relay M85D

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Product overview
The Model M85D multi-stage positive bias relay is a pilot-operated precision control that combines the sensitivity of a precision pressure regulator with positive biasing capability. This compact device delivers unusually high output capacity with minimal air consumption and provides protection against supply or output pressure variations.

Features

• Recommended for dead-end service, instrument panel supply and systems requiring precision pressure maintenance and instrument biasing
• Output defined by PO = PS + K, where PO is output pressure, PS is signal pressure and K is the spring constant
• Two-stage pilot operation enables precise control of set points
• 14 SCFM flow capacity in a compact unit for high-flow or fast-response applications
• Low air consumption to preserve compressed air and costly gases
• Compact size for installation where space is limited
• Available in 1/8" , 1/4" and 3/8" port sizes for easy integration

Technical specifications

• Model: M85D (Multi-Stage Positive Bias Relay)
• Operation: Pilot-operated, two-stage pilot
• Function: Positive biasing relay; precision pressure maintenance and instrument biasing
• Expression: PO = PS + K (PO = output pressure, PS = signal pressure, K = spring constant)
• Flow capacity: 14 SCFM
• Air consumption: Low
• Output capacity: High output capacity relative to unit size
• Protection: Provides protection against supply or output pressure variations
• Port sizes: 1/8" , 1/4" and 3/8" standard ports
• Mounting/size: Compact for installation in limited spaces
• Recommended applications: Dead-end service, instrument panel supply, systems requiring precision pressure maintenance and instrument biasing