Yodify DEC Brand Library
Model 85D Multi-Stage Positive Bias Relay
Model 85D Multi-Stage Positive Bias Relay
Brand: Fairchild Industrial ProductsThe Rotork Fairchild Model 85D Multi-Stage Biasing Relay is a precision control combining the sensitivity of a precision pressure regulator with positive biasing capability.
This compact, pilot-operated device offers unusually high output capacity with minimal air consumption, while providing excellent protection against supply or output pressure variations.
The versatile Model 85D is recommended for use in systems requiring precision pressure maintenance and instrument biasing, in dead end service and instrument panel supply applications.
The basic mathematical expression for the Fairchild Model 85D is PO = PS + K where PO is output pressure, PS is signal pressure and K is the spring constant.
Features
Specifications
Signal or Output Pressure - Maximum
- psig: 150 (kPa: 1,000, bar: 10)
Ambient Temperature Range
- -40° to 93.3° C (-40° to 200° F)
Supply Pressure
- psig: 150 (kPa: 1,000, bar: 10) Recommended Operating Supply Pressure
Standard Features
- Tamper-Proof
Air Consumption
- < 0.1 scfm (0.17 m³/hour)
Exhaust Port
Supply Pressure Effect
NPT Connection
Pressure Range
Diaphragm Material
Flow Capacity
Enclosure, Body Material
Trim Material
Exhaust Capacity - Relieving Units Only
BSP Connection
Mounting
Supply Pressure - Maximum
Documentation
Data Sheets
-
Data Sheet - Fairchild Model 85D Multi-Stage Biasing Relay pdf 109 KB
Installation Instructions
-
Installation - Multi-Stage Positive Bias Relay (M85D) pdf 633 KB
Brand-Managed Distributed Enterprise Catalogs (DEC)
for Authorized Channel Partners
for Authorized Channel Partners
Book a DEC Demo