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Fairchild 21312D, Model 21 Adjustable Ratio Relay

Model 21 Adjustable Ratio Relay
Item #: 21312D

Product Info

Fairchild

Model 21 Adjustable Ratio Relay, 1/4" NPT, Ratio 30:1 through 1:30, 0.5” WC Sensitivity, Bias Option, 0.3 psi Accuracy Features: • Venturi aspiration compensates for downstream pressure losses • Optional input and output biasing allows versatility in applications. • Adjustable from 30:1 dividing ratio to 1:30 multiplying ratio assures infinite pressure adjustments. • Floating seal ring isolates control chamber which increases stability by reducing effect of high flows. • Panel or Line Mounting. Benefits • Assures infinite pressure adjustments. • Compensates for downstream pressure losses. • Allows versatility in applications. • Increased stability by reducing effect of high flows. • Easy installation and service in the field.

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Factory Order UOM : EA