Certification Data Log; Supplier's Lock And Customer's Lock; Formation Of The List Structure - Elster EK220 Operating Instructions And Installation Information

2.4.2 Certification data log

With the aid of the "certification data log" according to PTB-A 50.7 (® PLogB,
chapter 3.8) some parameters relevant to calibration regulations can be changed also
with the calibration lock closed. Prerequisites for this are:
The supplier's lock (see below) must be open.
At least three entries must be available in the certification data log.
The affected parameters (e.g. cp value, measurement period) are identified in the lists in
chapter 3 with the access right "PL".
A data row for the value is entered before and after the change for each change to such a
parameter with the calibration lock closed.
If the certification data log has been written full, it can be cleared with the calibration lock
open using the command ClrPL (® chapter 3.8).
F
If the calibration lock is opened with the certification data log full, it can only be closed
again after clearing the certification data log.

2.4.3 Supplier's lock and customer's lock

The supplier's and customer's locks are used for securing all data which is not subject to
calibration regulations, but which should also not be changed without aut horisation.
The parameters which are write-protected under the supplier or customer locks are each
identified with "S" or "K" in the lists in the functional description ( ® 3). All values which are
shown with a minus symbol "-" cannot be changed, because they represent, for exa mple,
measurements or constants.
The locks can be opened by entering a code (the "combination"). ( ® 3.10: St.SL, Cod.S,
St.PL, Cod.C)
2.5

Formation of the list structure

The data display in the EK220 is structured in a tabular form. The individual columns in the
table each contain associated values.
Values identified with S and Arc are submenus or archives which you can view by ente r-
ing <ENTER> and leaving again with <ESC>. They each have, subordinate to the main
menu, a dedicated list structure, which is written in the corresponding list ( ® 3).
The archives are subdivided into a number of data rows (also te rmed "data records" ). All
values in the same data row are saved ("archived") at the same point in time.
The maximum number of data rows and the number of values in a data row depends on
the relevant archive. Within an archive the number of values and their meaning are the
same for each data row.
Switching to another archive data row occurs with the keys
and (for "older" data rows). After the last data row, the first follows again and vice
¯
versa.
Switching to another value within a data row occurs with the keys
value, the first follows again and vice versa.
A summary of the standard main menu (list structure) is shown on the following pages. By
changing the value Menu (see chapter 3.1 ), a minimum main menu can be selected.
© Elster GmbH
Volume Conversion Device EK220
(for "younger" data rows)
-
and
® ¬
. After the last
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