Digital
display
Selector
switch
l Digital display - Digital display for flow and temperature. Automatically turns off if the unit
is unused for more than 15 minutes.
l Pressure gauge - Analog pressure gauge, filled with glycerine to ensure good dampening
when reading pulsating pressures.
l Selector switch - Turn the switch to select the required function.
l OFF - Switches the unit off and disconnects the battery.
l TACH - RPM is indicated on the display.
l INT FLOW - Display flow and temperature measured by the OTC 4291 100 GPM
Flow Block.
l EXT FLOW - Display flow and temperature measured by the optional OTC 4290
16 GPM Flow Block (Included in the Deluxe set)
Digital Hydraulic Readout
Pressure
gauge
Tachometer
External
input
flow
5