LCR7000 & RHEOSIGHTS P/N: 974194 |
Rev: A
|
ECO: 52468
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From lab to production,
providing a window into the process
-30-
Position (Acquire At-mm):
Positions are the actual locations in the barrel where the data is
collected. Typically, this means that when this position is reached the reading is taken.
Positions will only be entered for ram rates other than zero.
Manual:
It allows the operator to decide when to quire the viscosity reading of the sample.
During the test, when the
End Point
key or “
Acquire”
icon is pressed the position and
sample viscosity value at that instant is stored in a position value associated with that rate
in the database. If
Manual Mode
is used and the operator does not click on Acquire,” the
rheometer will continue to push on the sample at the first ram rate until Acquire is pressed
or the rheometer rubs out of material in the barrel.
Time (Acquire At-sec): Acquire At-sec
is different from the
Time Delay
. The
Time Delay
stops the plunger movement between each test point for a specified number of seconds.
The total delay between two data points will be the delay time plus the actual plunger
movement time. For example, if all rates are 8 mm/min and all positions are 8 mm apart
then the measurement time is 1.0 minutes plus an additional
Time Delay
of 180 seconds
would make the total time between points 4.0 minutes. For thermal degradation runs
increase or decrease the
Time Delay
and or the number of points in the test to achieve the
total time needed to quantify the degradation.
Acquire At-sec
is the time the plunger
travels when under the set speed of the point.
You will need to set the test Start Position to complete your test setup procedure.
Start
Position
is the position where the first programmed rate begins. In controlled stress runs it
is where the first programmed load begins.
Set your Start Position depending on the amount of data points you will be collecting
during your test. The more data points, the more barrel charge you'll need to complete
your test.
Most test Start Positions will range from a barrel position of 90mm to 130mm. Dynisco
Polymer Test recommends a barrel Start Position of 100mm as an average standard for
your test.
4.
Start Position
