Bias Relays

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At Fine Controls Ltd we stock only the best bias relays. Whether you need positive, negative or multi stage biasing relays, we have a solution for you.

Designed and manufactured to the highest quality by Fairchild, our bias relays are made for applications that require an output pressure that is the sum of a controlled input signal plus or minus a fixed bias.

Can't find the biased relay you're looking for? As official Fairchild relay distributors, we are able to get hold of any pneumatic relay you need. Just give us a ring on +44 (0) 151 343 9966.

FAIRCHILD MODEL 14 - POSITIVE & NEGATIVE BIAS RELAY Model Number: 14

Flow capacity 40 SCFM @ 100 psig supply, 20 psig set point. Sensitivity 1/2' Water Column. Supply Pressure 250 psig maximum. Output Pressure 150 psig maximum. Pipe size 1/4' NPT - 3/8' NPT/BSPT.

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Technical Specifications User Manual

FAIRCHILD MODEL 85D - MULTI STAGE BIASING RELAY Model Number: 85D

Flow capacity 14 SCFM. Pressure change under flow conditions less than 0.1 psig. Maximum supply pressure 250 psig. Maximum signal or output pressure 150 psig. Adjustment range 0-20 psig to 1-100 psig. Pipe size 1/8' NPT - 3/8' NPT/BSPT.

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Technical Specifications User Manual

FAIRCHILD MODEL 2500A - BIASING REVERSING RELAY Model Number: 2500A

Supply Pressure 250 psig Maximum. Output Pressure 150 psig Maximum. Flow Capacity (SCFM) 150 @ 100 psig supply & 20 psig set point. Sensitivity 1' Water Column. Adjustment range 0.5-10 psig to 2-150 psig. Pipe size 3/8' NPT - 3/4' NPT.

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