Parr Instrument 6100 - Manual (Page 40)

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Menu Operating Instructions
P a r r I n s t r u m e n t C o m p a n y 38
Thermochemical Calculations Menu
Standardization Correction
Fixed Fuse Correction: Displays both the ON/OFF of
the fixed fuse corrections for standardization runs
and the value of the correction. This key toggles
the correction ON/OFF and accesses a sub-menu
on which the value is set. An appropriate fixed fuse
value is 50 calories.
Acid Correction: Press this key on the LEFT side
to toggle between Fixed HNO
3
, Calculated HNO
3
,
Entered Total, Entered HNO
3
, and Fixed Total for the
acid correction for determination runs. Press it on
the RIGHT side to access the Acid Correction nu-
meric dialog box on which the value can be set.
Fixed Sulfur Correction: Displays both the ON/OFF
of the fixed sulfur corrections for standardization
runs and the value of the correction. This key toggles
the correction ON/OFF and accesses a sub-menu on
which the value is set. When benzoic acid is used as
the calibrant, a fixed sulfur value of zero should be
used.
Determination Correction
Fixed Fuse Correction: Displays both the ON/OFF
of the fixed fuse corrections for determination runs
and the value of the correction. This key toggles the
correction ON/OFF and accesses a sub-menu on
which the value is set.
Acid Correction: Press this key on the LEFT side
to toggle between Fixed HNO
3
, Calculated HNO
3
,
Entered Total, Entered HNO
3
, and Fixed Total for the
acid correction for determination runs. Press it on
the RIGHT side to access the Acid Correction nu-
meric dialog box on which the value can be set.
Fixed Sulfur Correction: Displays both the ON/OFF
of the fixed sulfur corrections for determination runs
and the value of the correction. This key toggles the
correction ON/OFF and accesses a sub-menu on
which the value is set.
Note: When fixed corrections are turned ON,
the value in the specified field will be used
in both the preliminary and final reports. The
calorimeter will not prompt for actual correc-
tions. If all corrections are fixed, a prelimi-
nary report will not print, rather only a final
report will be generated. If values for these
corrections are entered into these lines, and
the toggle is set to OFF, then the fixed value
will be used in the preliminary report, but not
in the final report.
Calculation Factors: Accesses the Calculation Fac-
tors sub-menu, which provides for setting a number
of options for the way the thermochemical correc-
tions are applied.
Calculation Factors
Nitric Acid Factor: The default is 1.58 calories
per 1000 calories of released energy.
Acid Multiplier: This multiplier is the normality
of the sodium carbonate used during the acid
correction titration. The default value of 0.0709
allows for direct entry of the acid correction
in calories. If the bomb rinses are titrated in
order to determine the acid correction, press
this key to display the Acid Multiplier numeric