14
Control keys
POWER I/O
Press this key to switch the Gas Check POWER on for use. When this key is pressed from normal
display, Gas Check will turn its POWER off, remembering all last settings (except back light reverts
to OFF state). When in menus, pressing this key brings Gas Check straight back into the normal
display WITHOUT any of the settings changes being implemented.
ZERO/BACK
Just press zero to adjust for background levels, reset the peak hold memory or after changing a gas
group. In menus, successive presses of this key provides a simple step by step route BACK to the
normal display.
PROCEED
Press the proceed key to reach the menus that allow you to control special settings of the Gas Check
5000is.
DOWN
Press or hold the Down key to scroll up through menus or to raise a numerical value. Release when
desired.
UP
Press or hold the Up key to scroll down through menus or to lower a numerical value. Release when
desired.
INFO
Press the Info key to start data logging as per the parameters last set via the data control menu as
described in section 4.1.2.