Alicat P Series Pressure Gauge - Manual (Page 16)

16
MAIN
This mode defaults on power up, with
fl ow as the primary displayed parameter.
The following parameters are displayed in
the Main mode.
Line Pressure shows the pressure in the
units specifi ed at ti me of order.
Tare: Pushing the TARE P butt on tares
the pressure gauge and provides it with a
reference point for zero pressure.
This is an important step in obtaining
accurate measurements. It is best to
zero the pressure gauge each ti me it is
powered up. If the pressure reading varies signifi cantly from zero aft er an initi al
tare, give the unit a minute or so to warm up and re-zero it.
If in doubt about whether the pressure is zero, remove the gauge from the
line and open both ports to atmosphere before entering the Tare command.
For liquid pressure devices, all liquid must be drained from the gauge and any
plumbing between the gauge and the atmosphere.
If the unit reads signifi cantly diff erent than zero when it is exposed to
atmospheric pressure, it is a good indicati on that it was given a false tare.
MENU: Pressing MENU switches the screen to the Select Menu display.
MENU
TARE P
PRESS
PSIG
PSIG
+13.60
+
.
Flashing Error Message: An error message (POV = pressure
overrange) fl ashes when pressure exceeds the range of the sensor.
When any item fl ashes, the pressure measurement is not accurate.
Reducing the pressure to within specifi ed limits will return the unit to normal
operati on and accuracy.
If the unit does return to normal operati on contact Alicat.
Do Not Att empt To Tare Absolute Pressure (psia) Instruments!