Troxler ICO 4740, Manual Of Operation And Instruction, Page: 20 / 171

1-6
Aggregate Correction Factors
The oven stores up to twenty user-defined
aggregate correction
factors
(
ACFs
), which are percentage values used to adjust the
measured asphalt content for specific aggregates.
Measurement Displays
During a burn cycle, the oven displays measurement units of
percent loss
(
%Loss
). The
%Loss
measurement is the difference
between the sample weights before and after the burn cycle,
expressed as a percentage of the starting mass.
Two Burn Modes
The oven offers two
burn modes
. The burn time can be set
manually by the operator (
Program Time
mode), or it can be
adjusted automatically by the oven (
Auto-Control
mode). In
Auto-Control
mode, the oven limits the burn time according to
the
cutoff limit
specified by the operator. The cutoff limit can be
defined in grams or as a percentage.
The oven can store data for up to 200 HMA samples. Sample
data is stored in
project
files created by the operator. Up to
twenty project files can be defined. Sample data is stored in the
active project file, either manually using identification numbers
entered by the operator, or automatically using the
Auto-Store
function.
PARTS AND ACCESSORIES
Figure 1 shows the ICO and its accessories. Use this figure to
locate and identify the following parts:
1. The
oven
contains the electronics and heating elements
to burn the asphalt binder from the aggregate. The oven
includes an
internal printer
used to print sample data
and system status information. An
integrated scale
(not
shown) monitors mass loss throughout the burn cycle.
The oven’s
exhaust duct
vents fumes produced during
the ignition to a suitable ventilation system.