LACO USER MANUAL - GASCHECK G SERIES
9
© 2018 FLUIDX Equipment, Inc.
3.8
FUNCTIONS
The GasCheck instruments have a variation of functionality. Each of the
functions listed below has a number to the right of the heading. This
number indicates which function is included with each model.
Table 6: GasCheck Function Comparison
FUNCTION
DESCRIPTION
MODEL
CONTRAST
Use this function to adjust the contrast of the GasCheck LCD (liquid crystal display).
Significant variations in ambient temperature conditions can cause the display to
appear too dark or too light.
When this function is selected, a number will appear to the right of the Contrast
symbol as a percentage. Use the UP and DOWN keys to adjust the display the contrast
to the desired level. When satisfied with the contrast level, press the ESC key to exit to
the MAIN MENU.
G1, G2, G3
BACKLIGHT
The user can select either BACKLIGHT ON or BACKLIGHT OFF. In daylight, the user may
not be able to determine if the backlight is ON or OFF. A symbol on the main RUNNING
SCREEN shows the status.
When the backlight is ON, it significantly reduces battery life.
Backlight Off=40 hours of use
Backlight On=20 hours of use
G1, G2, G3
SOUND
The GasCheck has an audible sounder that increases frequency as detected gas levels
increase. This sounder can be switched ON and OFF. Use the UP or DOWN key to move
the “tick” to the desired position and then press the ESC key to return to the MAIN
MENU.
An audible beep can also be heard whenever the key pad is
pressed. This beep cannot be switched off.
G1, G2, G3
PEAK HOLD
When selected, this function holds the highest detected
reading on the display until the ENTER key is pressed.
Select Peak ON or OFF using the UP or DOWN key and then
press the ESC key to exit to the MAIN MENU.
When using the GasCheck G, press the ENTER key to clear the held reading. The
reading held on screen will be logged when the ENTER key is pressed.
WARNING: ZEROing the instrument in a contaminated environment will result in false
readings.
G2, G3
CALIBRATION
There are two Calibration settings that can be selected:
FACTORY and CUSTOM. Factory calibration is carried out shortly
after manufacture and cannot be adjusted. However, custom
calibration offers the ability to calibrate the instrument between
annual Factory calibrations. The GasCheck G ZEROs its reading
at switch ON. Therefore, the Custom calibration routine has only
one stage. For more information, see 5.1 CALIBRATION..
BATTERY
SELECTION
The GasCheck will operate using AA size batteries in either
Alkaline (non rechargeable) or Nickel Metal Hydride
(rechargeable).
Select the battery type using the UP or DOWN key and then
ress the ESC key to exit to the MAIN MENU.
Failing to select the correct battery type will not damage the instrument or affect its
ability to detect gas. However, it will cause the battery indicator to read incorrectly.