Enmet OMNI-4000 Manual de usuario descargar pdf (Pagina 24)

ENMET Corporation OMNI-4000 S/N 6705 and above

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

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Enmet OMNI-4000 Manual de usuario Pagina 24