The Proportional
Valve Tester model PVT-439 provides a portable
current source for testing proportional hydraulic
valves found on earth moving equipment. An
input cable connects to the machine's battery
and provides 24 VDC input. An adjustable dial
sets the current output. There is a calibrate
position that provides a known current (typically
set to 500mA). The current is fed out a 5
pin circular military connector to a cable
with either alligator clips or a customer
specified connector. The current may be interrupted
and fed to two terminals so that a current
meter can be inserted into the current path
for measurement.
