ENMET OMNI-4000 User Manual
Page 55

OMNI-4000 S/N 6705 and above
ENMET Corporation
49
Selecting the Maintenance Menu
Turn the device On and position the maintenance switch towards the center of the instrument. See Figure 3-10.
Figure 3-10: Position of Maintenance Switch
Replacement of Explosive Gas Sensor
The display shows: "Program a Sensor" to signal access to the Main Maintenance Menu.
N
OTE
: Insufficient battery voltage prevents access to the main menu. The operator is warned with a "Maintenance
impossible" message. It is possible to continue by connecting the charger or by changing the battery pack.
Selecting The "Replacing an Explosive Gas Sensor" Menu
• The display shows:
• Press the MENU switch twice. The display shows:
• Confirm the selection by pressing ENTER. The display shows:
Inputting the Calibration Gas Value
This procedure defines the content of the gas to be applied to the sensor during the calibration operation. The
maximum permissible concentration is 100% LEL CH
4
.
The display currently shows: "Calibration gas." To change the displayed value:
• Select the units by repeatedly pressing the MENU switch. When the desired number is displayed, press
BACKLIGHT switch.
• Select the tenths by repeatedly pressing MENU switch. When the desired number is displayed, press
BACKLIGHT switch.
• Select the hundredths by repeatedly pressing MENU switch. To return to the units or tenths of a unit, press
BACKLIGHT switch. When the complete number is displayed, press ENTER.
The value of the calibration gas to be applied is memorized.
Program
a sensor
Change
comb. sensor
Calibration gas
20% LEL
CH4
Maintenance Switch
Slide Right for Maintenance
Maintenance Switch
Slide Right for Maintenance