LCR7000 & RHEOSIGHTS P/N: 974194 |
Rev: A
|
ECO: 52468
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-91-
Troubleshooting
1.
“The rheometer doesn't respond when I press UP, DN or RUN, but the front display shows
the temperature is OK and says READY.”
Most likely the EMERGENCY stop button is depressed. Press the stop button then pull the
red EMERGENCY stop button out and see if the rheometer responds when pressing the DN
button.
If, when you press DN, the rheometer still doesn't go down. Check the readout on Sensor #
1 to see if any force is being seen by the sensor. Be sure the safety shield is in the down
position. Rcal the sensors and return the cross head to the park position.
2.
“I was running a test and the plunger came down and emptied the barrel of material, but
no data was collected.”
Check your test setup to see if the manual mode is selected. When the manual mode is on,
data is ONLY collected if and when the AQUIRE button is pressed. To set the test to RUN
automatically, shut manual mode off select the Steady State option in the test setup page of
the software. By setting the positions you wish the rheometer to collect data or RUN
manual and press END when the force values are steady (ca. +/- 1%).
3.
“The temperature used to be very stable on the rheometer now it seems to vary more than
+/- 0.2 degrees when just sitting there. (not loading sample or cleaning barrel)”.
The hole that the temperature measurement PRT sits in may be contaminated with
material. Set the rheometer temperature to 0.0 and then (and only then) remove the
temperature probe (PRT), wipe it clean if necessary and use a long drill bit to remove any
material in the PRT measurement hole.
4.
“A large amount of material (more than 1/4" up the plunger) has gone past the Plunger tip
is this OK?”
NO. Shear rates calculated from plunger speed and forces measured depend on the
assumption that all material exits through the die. Check to see if the tip is within ASTM
specifications (between 0.3751 - .3745). High temperature rheometers will tend to be on
the low side of this specification (bigger gaps when measured cold). If the tip is worn
replace it. If it is OK and you still see significant material going past the tip you may wish to
1.
Frequently Asked Questions) FAQs)
