Analyzer Module Historical Data; Basic Instructions - Emerson NGA2000 Reference Manual

NGA2000 Reference

1-11 ANALYZER MODULE HISTORICAL DATA

Analyzer Modules contain varying amounts of
historical data - values of parameters stored
when the module was manufactured (or other-
wise stored). These may be found in the diag-
nostic menus, normally either on a separate
history menu or else shown alternately with the
current data on the same menu.
The intention is to show how the analyzer was
configured when it was tested, and therefore al-
low you to spot any differences that may be
contributing to some performance shortfall.
It is possible to use this feature to store the cur-
rent data in this way, if it is desirable to do so.
Generally you should not do this unless you are
sure that the analyzer is performing correctly, as
you will overwrite the previous data and you will
not be able to restore it.
It is also possible to store known good zero and
span factors. In the screens showing the zero
and span factors there are links to screens
showing historical factors, and softkeys that
Rosemount Analytical Inc. A Division of Emerson Process Management
store these, and also restore them into the cur-
rent factors.
Network variables: AMVOLTSWAS,
CONV_TEMPWAS, HIST2T_, HIST2V_,
SPANWAS, ZEROWAS, WNXVOLTSWAS,
SPAN_GOOD, ZERO_GOOD, CURR_WAS,
PWAS, FLOW_WAS, TEMP_WAS
a.

Basic Instructions

Enter the Main menu...
Enter Technical level configuration...
Enter Service menus...
Enter Manufacturing data...
Enter Analyzer module data.
Press "STORE", and after reading the cau-
tion screen, "STORE" again.
Press the "HOME" key to get back to the
Main menu.
Reference Manual
748384-C
September 2003
Introduction 1-25