ENMET OMNI-4000 User Manual

Page 55

OMNI-4000 S/N 6705 and above

ENMET Corporation

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

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