Parr Instrument 6725 - Manual (Page 36)

6725
Semi-micro Calorimeter Instruction Manual
5-9
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 6772 automatically updates
the EE value as new tests are run. When set to ON, it keeps the EE value protected,
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 Calorimetric Thermometer to be updated using all standardization runs
currently in memory. 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 prevent this value from being
overwritten by an automatic or manual update.
Print Standardization Runs:
Will print all of the tests that have been incorporated into the calculated EE value.
This will be helpful 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
standardization 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) depending on the
selection on the Control Chart
Parameters menu (see Calibration
Data and Controls menu).
You can display the information
used for each test by selecting the
appropriate dot.