ENMET OMNI-4000 User Manual
Page 24
ENMET Corporation
OMNI-4000 S/N 6705 and above
18
2.2.1 Standard Start-Up
• Press the ON/OFF switch lightly
• The device performs a series of tests for a number seconds, displaying:
Figure 2-5: Start-up Display
• If the internal battery, sensor, electronics, etc. tests are successful, the readings from the sensors are displayed.
Example:
Figure 2-6: Gas Symbols alternation with Units of Measure (% or ppm)
• If the tests are incorrect, the device triggers an alarm (rapid beeping, general alarm and affected channel alarm indicator
lamps blink). Refer to the section on "Alarms.
2.2.2 Start-Up with Selection of Reference Explosive Gas or Vapor
Selection of mode
• Hold down the BACKLIGHT switch, and
• Turn on the device by pressing ON/OFF switch
• Release both switches
• The display shows:
• Then:
2.2.3 Selection of Reference Explosive Gas or Vapor
• A different reference gas is displayed each time the MENU switch is pressed. There are twenty-seven (27) preset
reference gases, in the "0-100% LEL" range. A twenty-eighth (28) choice allows the selection of an "Other" gas
corresponding to a special need; the data for this gas must be input, as explained in Section 3. The display starts with the
gas currently selected.
• Confirming the choice: When the desired gas is displayed, press the ENTER switch. The display reads: "Test in
progress," prior to beginning the working phase. The reference explosive gas is now the selected gas.
• Aborting the procedure: Press the BACKLIGHT switch or the ON/OFF switch. The reference gas remains the same as
when the device was turned on. NOTE: If the operator does not enter any data for a period of approximately 10
seconds, the OMNI-4000 goes into test mode and normal reading mode without changing the reference gas, the same as
aborting the procedure.
• If the tests are invalid, the device triggers an alarm (rapid beeping and blinking of the alarm indicator lamp).
Test in progress
Version:
USA 1
0 LEL 10 ppm
0.0 ppm
20.9 %
0 CH4 10 CO
0.0 NO2
20.9 O2
Test in progress
Version:
USA 1
Type of gas
Methane