Fairchild Pneumatic Positive Bias Relay
- Product Type: Biasing Relay
- Manufacturer: Fairchild
- Product Family: Model 15
Pneumatic Positive Bias Relay; Item Positive Bias Relay; Overall Dimension 3 Inch Width x 7 Inch Height; Pipe Size 3/8 Inch BSPT Threaded; Gauge Port Size (2) 1/4 Inch Threaded; Vent Size (4) 13/64 Inch Diameter; Material Aluminum Alloy (Body/Housing); Mounting Type Line/Panel; Mounting Hole Size (2) 1/4 Inch-20 TPI x 0.5 Inch; Bias Pressure Range 0 to 10 PSIG; Supply Pressure 250 PSIG (Maximum); Signal/Output Pressure 150 PSIG (Maximum); Supply Pressure Effect 0.1 PSIG; Flow Capacity 40 SCFM at 100 PSIG; Exhaust Capacity 5-1/2 SCFM; Sensitivity 1/4 Inch WC; Ambient Temperature -40 to 200 Deg F; Includes Stainless Steel/Brass/Zinc Plated Steel Trim, Buna-A and Dacron Diaphragm; Applicable Standard ISO 9001, FMFeatures
The Model 15 is Sensitive to 1/4 Inch Water Column Variation which Permits Use in Precision Applications; A Balanced Supply Valve Minimizes the Effects of Supply Pressure Variation; Aspirator Tube Minimizes Downstream Pressure Droop Under Flow Conditions; Flow of up to 40 SCFM with 100 PSIG Supply at 20 PSIG Setpoint Allows Use in Applications Requiring High Flow Capacity; A Separate Control Chamber Isolates the Diaphragm from the Main Flow to Eliminate Hunting and Buzzing; Permits Use in High Precision Applications; Minimizes the Effects of Supply Pressure Variation; Minimizes Downstream Pressure Droop Under Flow Conditions; Allows Use in Applications Requiring High Flow and/or Fast Response; Isolates the Diaphragm from the Main Flow to Eliminate Hunting and Buzzing; Quick and Easy Field InstallationSeries/Model Info
The Model 15 Positive Bias Relay is designed for applications that require an output pressure that is the sum of a controlled input signal plus a fixed bias. This pneumatic relay provides an output pressure that represents the input signal pressure plus a preset bias.