Monthly Archive; Legal Metrological Logbook As Per Ptb-A 50.7 - RMG EC 900 Operating Instructions Manual

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Monthly archive

In the monthly archive, the following values are stored at the end of a month:
Archive index
Time stamp
Running number
Totalizer readings for V
The relevant statuses of the above totalizers
Disturbance totalizer readings for V
The relevant statuses of the above totalizers
Mean values for pressure, temperature, K coefficient and C
The relevant statuses of the above measured values
Maximum periodic quantity of the day for V
Maximum periodic quantity of the day for V
Maximum daily quantity of the month for V
Maximum daily quantity of the month for V
Overview of status (bit string)
Checksum for the data record (CRC)
The monthly record is written at the end of the billing month. If the end of the gas day is 6 o'clock
for instance, the record for the end of the month is written on the first day of the following month at
6 o'clock. When the monthly record is written, the formation of the mean and maximum values is
initialized.
If the date is adjusted beyond the turn of the month, two monthly records are written: the first rec-
ord with the old date and the second record with the new date. The totalizer readings recorded and
the mean values are identical in both records, while a zero (0) is entered for the maximum values in
the second record. Example: The time is put forward from July 31 (31.07.) to August 2 (02.08.).
The memory depth is 24 entries.

Legal metrological logbook as per PTB-A 50.7

All changes of the parameters under legal control are entered chronologically in the legal metrolog-
ical logbook. The entries in this logbook can be deleted via a separate mode if the calibration
switch is open. If the logbook is full, you cannot change any parameters under legal control. Then
you will first have to delete the contents of this logbook before you can make further changes. To
do this, open the calibration switch and set the appropriate mode. A first new entry will automati-
cally be made which documents the erasing procedure.
The legal metrological logbook has the following structure:
Archive index
Time stamp
Running number
Parameter number (= data element address*)
Old value
New value
..........................................................................................................................................................................................................
, V and V
o m b
and V
mD bD
and V
m
and V
m
and V
m
and V
m
CONSTRUCTION AND FUNCTION
(date/time information)
b
(value)
b
(date/time information)
b
(value)
b
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