Parr Instrument 6400 - Manual (Page 37)

Menu Descriptions
6400 4
w w w . p a r r i n s t . c o m 35
Bomb 1
The following four values are displayed for the
Bomb # shown in the title on top of the screen.
» Bomb EE Value: Displays the calculated EE value.
» # Runs, EE Val.: Displays how many runs have
been used to determine the EE value.
» Rel. Std. Dev.: Displays the relative standard de-
viation for the series of tests used to determine
the current EE value in percent of the EE value.
» Bomb Fire Count: Displays the current bomb
firing count or the number of times the bomb
has been fired since it was last serviced. When
this count matches the limit set by Bomb Service
Interval (on the Calibration Data and Controls
screen), the user will be informed that the bomb
is ready for service.
Name: Enables the operator to assign a
unique alpha-numeric label for the bomb ID.
The ID can be up to 8 characters.
Protect EE Value: Toggles between OFF and
ON. When set to OFF, the 6400 automatically
updates the EE value as new tests are run.
When set to ON, it keeps the EE value protect-
ed, whether it has been revised manually via
the Manual EE Entry key or calculated by the
instrument.
Update Statistics: If the Protect EE Value is
set to OFF, pressing this key will cause the EE
Value for this Calorimeter to be updated using
all standardization runs currently in memory
to the limit established in the Calibration Data
and Controls menu. If the Protect EE value is
set to ON, this key is not functional.
Manual EE Entry: This key allows the user to
manually enter an EE or calibration factor for
a given calorimeter ID or bomb head. If an EE
value is manually entered, it is necessary to
turn the Protect EE Value ON in order to pre-
vent this value from being overwritten by an
automatic update.
Print Standardization Runs: This key will print
all of the tests that have been incorporated
into the calculated EE value. This will be help-
ful in evaluating a series of tests which fail to
produce a satisfactory EE value and relative
standard deviation.
Reset Bomb Fire Count: After bomb service,
press this key to reset the fire count to zero.
Control Chart Plot: Displays the current stan-
dardization runs being used to calculate the
Bomb EE Value. The display will either chart
the value of the Heat of Combustion (HOC) of
the Standard or the Energy Equivalent (EE) de-
pending on the selection on the Control Chart
Parameters menu (see Calibration Data and
Controls menu).
Control Plot Chart Plot
You can display the information used for each test
by selecting the appropriate dot.
Each data point represents a Standardization run
used in the calculation of the EE Value for the Bomb
ID being displayed. The left side of the graph con-
tains the oldest runs and the right represents the
most recent. To view the run data used for a particu-
lar data point, click on the data point with a stylus
and the run data for that point is displayed.