Oldham MX 2100, Operating And Maintenance Manual

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The appliance carries out a visual and audio test phase for a few seconds and indicates:
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the Oldham logo,
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the version of the "appliance" software, date, code and serial number (according to the product version
selected by the customer),
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the preprogrammed values of the alarm thresholds for each measuring channel (according to the product
version selected by the customer),
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measurements currently performed.
Note : When the appliance is operating, a visual and audio signal indicates that the MX 2100 is operating correctly. This
signal can be cancelled or the interval between each signal can be modified, as required.
3.2. Switching on with choice of reference explosive gas
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Hold down the "lighting" or "acknowledge" key.
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Switch on the appliance by pressing the "On/Off/Enter" key.
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Release the key on the two fields.
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The display unit shows the Oldham logo for a few seconds while it performs its self-tests.
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It then displays the list of preprogrammed gases, with the currently selected gas in the dark field.
Choosing a new reference gas:
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Each time you press the "Acknowledge" key, the list scrolls downwards and, each time you press the
"Lighting" key, the list scrolls upwards. Thirty-one reference gases are preprogrammed in the range 0-
100% LEL (or 0-5% volume CH4). A thirty-second (32) "Autre" (Other) lets you select a gas according to
your specific requirements. The data specific to that gas are entered in the workshop.
•
Accept the choice: when the chosen gas is displayed, press the "ENTER" key.
The appliance switches to "Testing" mode, as described in the previous section, before going on to the working phase.
The reference explosive gas is now the gas that was selected.
If you do not validate any gas, after a certain time, the MX 2100 switches to the test phase and to the normal
scanning phase without changing the reference gas, so that the procedure is aborted.
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If the tests are unsatisfactory, the appliance switches to alarm mode (rapid discontinuous audio signal and
flashing alarm light).
The appliance is ready to use.
4
4
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S
S
W
W
I
I
T
T
C
C
H
H
I
I
N
N
G
G
O
O
F
F
F
F
The appliance is switched off by holding down the "On/Off" key for three seconds.
During this time, the countdown "Arrêt 3,2,1" (Stop, 3, 2, 1) is displayed on the display unit, at the bottom of the dial,
before it is switched off.