GASMAX II Operation & Maintenance Manual, Revision 7.0
Page 24
Press the EDIT key to access the USER MENU display mode.
When in user menu display mode, use UP
and DOWN to select an item, EDIT to change an item, and NEXT to exit the menu or function and return
the GASMAX II to display mode. See Chapter 8 for more information on User Menus.
Figure 4-3: User Menu Screen
NOTE:
TAKE CARE WHEN CHANGING GASMAX MENU SETTINGS
–
INCORRECT SETTINGS COULD CAUSE
THE GASMAX TO BECOME INOPERATIVE AND MAY COMPROMISE THE SAFETY OF THE GAS DETECTION
SYSTEM. BE SURE TO UNDERSTAND WHAT TO CHANGE AND WHY BEFORE ENTERING THE USER MENU.
Press the DN/CAL key, followed by the EDIT key, to access CALIBRATION MODE.
Regular calibration is
critically important to the continued safe operation of any gas detection system. See Chapter 6 for more
information on calibration.
Figure 4-4: Accessing Cal Mode
NOTE:
TAKE CARE WHEN APPLYING CALIBRATION GAS TO THE GASMAX WHILE NOT IN CALIBRATION
MODE. THIS WILL CAUSE AN INCREASE IN THE 4-20MA OUTPUT SIGNAL AND MAY RESULT IN
UNINTENDED AND UNEXPECTED ALARM CONDITIONS.
MORE INFORMATION ON DISPLAY SCREENS
The T display screen shows a single channel’s information. The current value is shown in calibrated
engineering units. A horizontal bargraph tracks the current value and shows the Alarm 1 and Alarm 2
values in graphical form. The user-programmable Engin
eering nits “ units” and Measurement ame
text strings are shown below the real-time reading.
P
T
IT
T
I
P
T
IT
T
I
P IT
To nter
C M
C
To access Cal
Mode, press the
DN/CAL key first
Then press the EDIT
key to confirm
Calibration Mode
