Hitec Luxembourg S.A. |
5, Rue de l’Église, L-1458 Luxembourg
www.hitec.lu | [email protected] | Tel.: (+352) 49 84 78 - 1 | Fax. (+352) 401303
File Name: HTCA_003-DADS-UserManual.docx
Document Type: End User Manual | Version date: 01/05/2010 | Last Printed: 15/02/2011
Page 14/81
DADS Measurement Concept
DADS’ absorption tests can be done with different test conditions. The user can determine
the start and end conditions of a measurement. He can also determine the start and the end
of the polynomial which is calculated after the measurement.
All these parameters are defined in the HITEC Config application. The user has the
possibility to define different parameter sets. These sets are chosen then by the user before
he makes the test, or when he defines the test list.
The first parameter which can be set is the measurement
Threshold
. Once the operator has
started a measurement, the DADS application permanently reads the torque. From the
moment the torque becomes higher than the threshold value, the DADS application is
enabled to watch for the
Maximum Torque Raw
.
The next picture shows absorption tests of carbon black, soft type, where some test
conditions are shown, in black. The raw torque curve is drawn in magenta, and the
polynomial curve in green. Note that the polynomial is of 3rd order.
After the maximum-torque-watch is enabled,
the application waits for the end condition of
the measure. This one can be either a fixed
end time during which a maximum torque
has been observed, called
Measurement
End
, or the torque reaches a
Torque Limit
.
In the shown example the end condition was
determined by the end time.
After the measurement has stopped, the
start and the end of the polynomial to be
calculated are determined by the application.
Different parameters can be set by the user.
Polynomial Start
, in percent of the
maximum torque value, fixes the start of the
polynomial.
Polynomial End
in seconds
after the maximum torque gives the
polynomial end. A polynomial of 3rd order
will be calculated using the raw data points
between
Polynomial Start
and
Polynomial
End
.
Of course
Polynomial End
is smaller or
equal to
Measurement End
.
