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File Name: HTCA_003-DADS-UserManual.docx
Document Type: End User Manual | Version date: 01/05/2010 | Last Printed: 15/02/2011
Page 10/81
Terms and Definitions
Different terms are used in the absorption test area. In the following sections some important
terms are explained.
ASTM Standards
TLS Measurement
Normalization Measurement
DADS Measurement Concept
ASTM Standards
The DADS application supports the following
ASTM standards
.
D 2414
Standard Test Method for Carbon Black - n-Dibutyl Phthalate Absorption
Number.
D 3493
Standard Test Method for Carbon Black - n-Dibutyl Phthalate Absorption
Number of Compressed Sample.
D 3324
Standard Practice for Carbon Black - Improving Test Reproducibility using
ASTM Reference Blacks
A new release of the ASTM 2414 has been balloted in December 1999. This splits the
existing D 2414 in three methods.
Procedure A
End-point at fixed torque level
This "classical" method is well suitable for hard blacks but often leads to
problems when low-torque soft blacks are to be tested. Adjust the torque limit
switch or indicator set point in such way that the SRB F-5 gives a value of
129.5 ± 1.5 cm3 / 100g.
This method will be called
Proc. A or ASTM
method in the current
document. The result will be called Proc. A or ASTM result.
Procedure B
End-point at 70% of the maximum torque
Certain soft blacks and thermal blacks may fail to give an end-point due to
insufficient torque level. Therefore the preferred method for testing soft
blacks is to record the torque curve using a pen-recorder or a data
acquisition system and to read the end-point at 70% of the maximum of the
curve. Set the torque limit switch or the indicator set point to full scale in
order to disable the automatic shut-off of the Absorptometer.
The method and test results are called
Proc. B
. The percentage has to be
defined in the HITEC Config application on the
. The default
value is
70%
as defined in ASTM D2414
