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April/April/Avril 2023
AUT-UM-03446-DE-02
LM OG Baureihe / LM OG Series / Série LM OG
STANDARD CORRECTION FACTOR AT 440 MPAS
a) LM OG
= 1 .0000
b) LM OG-HF
= 1 .4700
DETAILS OF UNIT OPERATION LM OG-AM MID CONFORMING
RESET Button
The display of the resettable totalizer (batch register) can be put to zero by pushing the
RESET
button . A
RESET
is not
possible during a batch process . The
RESET
of the non-resettable totalizer is only possible in the MID secured area of the
register configuration . Each
RESET
will save the dispensed quantity in the datalogger, but only if the quantity is ≥ 0 .5 liters .
Datalogger: A Non-volatile Memory
The register is fitted with a memory device to store measurement results until their use or to keep a record of commercial
transactions, providing proof in the event of a dispute . Devices used to read stored information are considered as included
in the memory devices . It is not required that the parties interested in a transaction shall be provided continuously with
the results of measurement, but only that they shall have access to these results (for example, in the event of a dispute) . In
addition, in the case of self-service (filling station, truck filling station) the owner of the measuring system is considered to
have access to the indications of the measuring system even when he does not use this possibility in practice (OIML R117-1,
Chapter 3 .5) .
Battery
As soon as the capacity of the battery is less than 10%, "LBat" is displayed on the electronic
register . The battery should then be replaced within the next two months . The battery is
exchangeable in all meters of the LM OG-AM and OG-TAERM series while opening the cover
on the front of the register . No data are lost, they are securely saved in an EEPROM memory,
except for the date and time . To keep the date and time settings, you have to
reinsert the
battery within 30 minutes
.
Interruptions of the Batch Process
By releasing the meter trigger, the batch process is interrupted . When pulled again, the batch process will be continued at
the very point where it was interrupted, unless the
RESET
button has been pushed in the meantime . The display will remain
unchanged during the interruption . If the batch process is interrupted by an external source (for example, failure of a transfer
pump), the procedure is the same .
Functional Control
In normal operation, the register board totalizes flow in the lube meter by sensing reed switch actions . The batch display may
be reset to zero by momentarily pressing the
RESET
button on the front panel . This action will set the batch accumulator
to zero and cause the register to enter a self-test mode . For the self-test, it is necessary that the display is activated with all
numbers set to
8
and all other indicators set to
on
for a period of 0 .8 seconds . If flow or reed switch action takes place during
the self-test period, the resultant pulses are processed as normal flow accumulations . This accumulation of flow can only be
reset by pressing the
RESET
button .
During the self-test period, the meter will compare the double redundant storage of the correction factor, the unit of measure
and direction of rotation . If one of the values do not correspond, the register will show a series of dashes (- - - -) and will
become inoperative .
If flow sensing or reed switch action is present at any time and it is not preceded by a pressing of the
RESET
button, the flow
accumulations will be added to the value already present in the batch accumulator .
