16
Mass Flow Rate:
The mass flow rate is the volumetric flow rate corrected to a
standard temperature and pressure (typically 14.696 psia and 25 °C).
This parameter is located in the lower middle of the display. It can be moved to
the primary display by pushing the button below
SCCM
in this example. Your
display may show a different unit of measure preceded by the letter
S
. Pushing
this button again shows unit changes.
To get an accurate volumetric or mass flow rate, the gas being measured
must be selected. See Gas Select, page 21.
MENU:
Pressing
MENU
switches the screen to the
Select Menu
display.
Flashing Error Message:
An error message (
MOV
= mass overrange,
VOV
= volumetric overrange,
POV
= pressure overrange,
TOV
= temperature
overrange) flashes when a measured parameter exceeds the range of the
sensor. When any item flashes, neither the flashing parameter nor the
mass flow measurement is accurate. Reducing the value of the flashing parameter
to within specified limits will return the unit to normal operation and accuracy.
If the unit does not return to normal operation contact Alicat
.
