Parr Instrument 6400 - Manual (Page 37)

6400
Calorimeter Instruction Manual
5-5
ƒ Reset Rinse Tank Counter. Resets the counter when the rinse tank has
been refilled. This counter must be reset after the rinse tank is refilled.
ƒ Rinse Time. This value establishes the time that the rinse water solenoid
is turned ON for each rinse cycle. When the rinse water solenoid is ON,
distilled water from the rinse tank is pumped, under pressure, into the
bomb cylinder. This rinses the cylinder walls and the bomb head. These
rinsings are then pooled and collected at the exhaust port of the
calorimeter. The factory default value is 2.5s. This value, along with the
# of rinse cycles, determines the total volume of recovered rinse. These
default values will yield a total of 50 ml (approx.) of bomb washings.
ƒ # Rinses Left. This value provides an estimate of how many rinses are left
in the tank. This number is simply a counter not an actual measurement
of the volume in the tank.
ƒ Rinse Flush Time. This value is used to establish a time between rinse
cycles. During this time the rinse solenoid is turned OFF. This off time
permits the rinse water to drain out before the next rinse cycle begins.
The factory default value is 2s.
ƒ Clear Time. This time value is used to establish a post-rinse oxygen filling
time for the bomb. This step is used to clear the lines and valves of any
residual rinse water prior to the next test. The factory default value is
10s.
ƒ # of Rinse Cycles. This value establishes the number of distinct rinse
cycles used to rinse the bomb. The factory default value is 3 rinse cycles
“Other” Multiplier:
Press this key to display the Other Multiplier dialog box, where the user can enter a final
multiplier to be used when the reporting units are set to “Other”.
Calibrate Touchscreen:
This key prompts the user to touch the screen at predefined points in order to facilitate
touch screen calibration. It is important that a touch screen stylus, rather than a finger,
be used in order to realize an accurate calibration.
LCD Backlight Timeout:
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 backlight ON at all times.
LCD Contrast:
This key accesses a sub-menu with a slide control which adjusts the contrast on the
LCD display for optimum viewing.