FAIRCHILD Positive and Negative Bias Relay (M14)

Positive and Negative Bias Relay (M14)

FAIRCHILD Positive and Negative Bias Relay (M14)

Main Features

  • Control sensitivity of 1/2″ water column.
  • Balanced Supply Valve.
  • Aspirator Tube design.
  • Separate Control Chamber.
  • Mounting Bracket available
  • Canadian Registration Number (CRN) certification.

Benefits

  • Allows use in precision applications.
  • Minimizes the effects of supply pressure variation.
  • Minimizes downstream pressure droop under flow conditions.
  • Isolates the diaphragm from the main flow to eliminate hunting and buzzing.
  • Easy to install in the field
  • Certification for use in all Canadian territories and provinces.

Designed for applications that require an output pressure that is the sum of a controlled input signal plus or minus a fixed bias, Fairchild’s Model 14 Biasing Pneumatic Relay provides versatility in its ability to provide either positive or negative biasing in a single unit. The output of the Model 14 relay is the sum of the spring bias, set with the Range Screw, plus a pneumatic input signal. (Po = Ps  K); where Po is output pressure, Ps is signal pressure, and K is the combined spring constant.

Specifications
Max Supply Pressure: 250 psig [17 BAR]
Max Output Pressure: 100 psig [7 BAR]
Flow Capacity: 40 SCFM (68 m3/HR)
Accuracy: 0.3 psi (typ)