Basic Operations
January 2023
•
Rev. 0
• Standard Devices User Manual
13
Selecting Gas
Mass Flow Devices
MENU
→
SETUP
→
Active Gas
In most cases, mass flow devices are physically calibrated at
the factory using air. Gas Select™ allows you to reconfigure
the device to flow a different gas without any need to send it
back for a physical recalibration.
Gas selection is found in the setup menu. To access the menu,
press
MENU
and then
SETUP
. When the cursor is pointing at
Active Gas
, press
SELECT
.
Within this menu, there are a variety of gas categories, recent
selections, and COMPOSER™ mixes. Each category lists a
subset of available gases and preconfigured mixtures. Note
that not all gases are available on all devices. Corrosive gases
and refrigerants are only available on the anti-corrosive line
of mass flow devices.
As soon as you press
SET
from the gas list, your device
reconfigures its flow rate calculations to the newly selected
gas properties. There is no need to restart the device or
perform any other action.
Your current gas selection appears just below the unit’s
indicator on the right side of the
main display
.
It is also possible to program the device to calculate the mass
flow of a custom gas mixture (COMPOSER™ mixes). The device
can have up to twenty of these mixtures saved at a time. For
more information and instructions on creating custom gas
mixing, see
.
Category and Gas List Controls
•
PAGE
advances the view to the next
page of categories or gases.
•
SELECT
(in the category list) opens a
list of gases in that category.
•
SET
(in the gas list) immediately loads the gas
measurement properties and exits to the
setup menu
.
Setup menu.
First page of the Gas
Select™ category list.
First page of the Gas Select™
standard category.
