Model 771 Current-to-Pneumatic Transducers

The Model 771 Current-to-Pneumatic Transducers were designed

as a cost-effective valve service current-to-pneumatic transducer.

The Model 771 receives the output of an electronic signal, such

as a PID control function, and drives a control valve via the

transducer until the control function is satisfied. For measuring

circuits, or for control circuits requiring a higher degree of

transducing accuracy, the Model 77 should be used.

Because it’s boosted output capacity minimizes time lags and

the effects of leakage, the Model 771B should be used for

direct-loading of valve actuators or other large volumes. If the

valve actuator includes a valve positioner, a Model 771S

should be used.
I think 771S is the best choice for Your application. Make chore that your output is 3 -15 psi or 0.2 - 1 bar this is the standard input for almost every regulator valve. succes whit Your project.

Bruno

FloFFlowrite 599 Series Valves