2:1 Ratio Amplifying Relay

Description

The 2378-501 Amplifying Relay is a proportioning device
designed for use in pneumatic control systems where the
application requires the amplification of a proportional signal
from a controlling device. The 2378-501 branch line pressure
output increases as a 2:1 ratio to the input signal pressure (up
to main air pressure) and amplifies the volume of air available
to the final control device, thereby minimizing system lag.
The unit is factory adjusted for a 10 psig branch pressure at
a signal pressure of 5 psig. A bias adjustment is provided
which permits the effect of the input signal pressure to be
decreased up to 9 psig from the actual input pressure