The Model 1500 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 high output flow at an output pressure that represents the input signal pressure plus a preset bias. The output of the 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 spring constant set by the Range Screw.
Specifications Max Supply Pressure: 250 psig [17 BAR] Max Output Pressure: 150 psig [10 BAR] Flow Capacity: 150 SCFM (255 m3/HR) Accuracy: 0.5 psi (typ)