Cannon Instrument miniAV-X - Manual (Page 36)

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CANNON ® miniAV ® -X Automatic Viscometer with VISCPRO ® Instruction & Operation Manual
Version 1.0— February, 2008; CANNON ® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
The entered actual temperature must not cause a correction in tem-
perature greater than +/- 5.0 degrees.
Click the Service/Zero Temperature Offsets menu item and select which
offsets to clear.
Multiple corrections Multiple or successive entries of correction for any temperature are
permissible. A newly entered corrected temperature is mathematically
compensated with the previously entered correction and is stored in
memory by the onboard microprocessor as the latest correction.
Data entry errors The miniAV-X will not accept temperature reference data outside the
parameters noted previously. If the amount of the correction (delta to
displayed temperature) is too large, the correction will not be accepted.
General/Current Offsets The General Bath Offset is factory-preset value affecting temperature
control at all temperatures and should not ordinarily be changed. The
Current Offset is the temperature adjustment applied to a particular
temperature to conform bath temperature control to your temperature
reference . Always click the radio button for the
Apply As Current
Option when calibrating for a specific temperature.
Training sensors
It is necessary to train instrument sensors in
preparation for sample testing at a specific
temperature. The training procedure estab-
lishes the proper power levels for sensor
detection of the sample meniscus. The sensor
training data is then stored by the miniAV-X
instrument, and recalled when testing at that
temperature. The sensor training procedure
requires approximately 30 minutes (longer at
lower temperatures).
NOTE You will be prompted to train sensors by the
instrument hardware or software whenever a
new temperature is selected for miniAV-X
operation. You will be unable to test samples
until the training has been completed.
Sensor training data remains valid until the sensors are retrained at the
same temperature. Retraining is necessary only when the viscometer
tube is changed, or if sensor performance changes over time.
Train Tube Sensors To train tube sensors, click Service menu and select the Train Tube
Sensors menu for the desired instrument. The Train Tube Sensors
window will open.
Prewash option: Click the Prewash option if the tube is not clean and
dry. VISCPRO will initiate a cleaning cycle using current wash configu-
ration settings prior to initiating the sensor training procedure.