Parr Instrument 6100 - Manual (Page 36)

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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 34
Operating Controls Menu
Method of Operation: Offers an operating mode of
either dynamic or equilibrium. In most cases, the
dynamic mode with its curve matching capability
will save approximately 3-4 minutes per test and will
produce the same operating precision as the slower
equilibrium mode.
Reporting Units: Toggles between BTU/lb, cal/g, J/
kg. Other, and MJ/kg. A user selected set of report-
ing units may be programmed by selecting “Other”.
Spike Correction: This key accesses sub-menu,
Spike Controls. Spiking is the material addition,
such as benzoic acid or mineral oil, to samples
which are difficult to burn in order to drive the
combustion to completion.
Spiking Correction
Use Spiking: When set to ON, the calorimeter
will prompt for the weight of the spike added
and will compensate for the heat of combus-
tion in the calculations.
Heat of Combustion of Spike: The heat of
combustion of spike is entered on sub-menu
keyboard in cal/g.
Use Fixed Spike: When set to ON, a constant
amount of spike is to be added to each test.
Weight of Fixed Spike: The weight of the fixed
spike is entered on a sub-menu keyboard.
Prompt for Spike before Weight: When set to
ON, the calorimeter will prompt the user for
the weight of the spike and the weight of the
sample. Normally the calorimeter will prompt
the user for the weight of the sample and then
the weight of the spike.
Note: The precision of tests with fixed spikes
can be no better than the repeatability of the
spike weight.
Other Multiplier: This button allows the user to
enter a final multiplier that is used when the report-
ing units are set as “Other”.
Calibrate Touchscreen: This key prompts the user
to touch the screen at predefined points in order to
facilitate touchscreen calibration.
LCD Backlight Time Out: The unit is equipped with
an automatic circuit to shut-off the backlight when it
is not being used. The back light will shut-off if there
is no keyboard activity for the number of seconds
entered. Pressing any key will automatically turn the
back lighting ON. A setting of 0 will keep the back-
light ON at all times.
LCD Backlight Intensity: This key accesses a sub-
menu with a slide control which adjusts the contrast
on the LCD display for optimum viewing.
Print Error Messages: When turned ON, all error
messages will be printed on the printer as well as
displayed on the screen.
Language: Steps the calorimeter through the in-
stalled operating languages.