Barnstead International Thermolyne 859 Series, Service Manual

Page: 62 / 118

Temperature This factor compensates for
Compensation the loaded basket assembly
Factor: weight reduction experienced
when placed in the ignition
furnace chamber at temperature.
The Temperature Compensation
Factor is automatically calculated
by the furnace software. This fac-
tor must be employed in the igni-
tion process to achieve accept-
able precision and accuracy
specified by standard methods.
This factor is subtracted from the
asphalt content.
Test Endpoint: This is the point at which the
HMA sample weight loss does
not exceed the “Test Stability
Threshold Setting” for three con-
secutive one-minute periods.
Furnaces containing Rev. I soft-
ware will end the test, asterisk
the endpoint reading on the print-
out, and switch from the program
mode to the idle mode at end-
point if the Auto Program
Switching to idle is employed.
Test Stability This adjustable variable
Threshold: determines the endpoint of the
HMA sample mass loss. The test
is complete when the measured
mass loss does not exceed the
stability threshold setting for three
consecutive one minute periods.
The stabile indicator on the front
control panel indicates the test
stability threshold (endpoint) has
been attained.
62
G
LOSSARY