CANNON Instrument Company® | VISCPRO II Instrument Set Up
49
thermometer through an access hole in the display hood, measuring the actual temperature of the bath
fluid, and entering that temperature into the CAV 4.1 software.
1.
If raised, lower the display hood.
2.
Carefully insert a thermometer through the access hole in the display hood and into the bath until
the top of the thermometer is in the middle of the capillary portion of the viscometer tube. The
thermometer passes through the same hole in the top of the bath unit that is used to fill the unit
with fluid.
3.
Wait for the thermometer to adjust to the temperature of the bath fluid. Read the reference
temperature.
4.
In the
VISCPRO II Menu
, select
Service
>
[instrument group]
>
[instrument]
>
Temperature
Calibration
. The
Temperature Calibration
window opens.
5.
Enter the reference temperature measured in step 3 in the
Reference Temperature
field.
6.
Click
Calibrate
; wait for the system to save the adjustment, and then click
Done
to close the
window.
7.
Remove and clean the thermometer.
Set Vacuum and Pressure (
VISCPRO II
)
Set the vacuum and pressure of the CAV 4.1 before running the instrument.
1.
In the
VISCPRO II Menu
, select
Service
>
[instrument group]
>
[instrument]
>
Adjust
Vacuum/Pressure
.
2.
Follow the instructions on the screen to set the vacuum and then the pressure for the bath.
Train Sensors (
VISCPRO II
)
Train the sensors whenever operating the CAV 4.1 bath at a new temperature. Once trained, the
calibration values for a particular temperature are saved and will be recalled if the CAV 4.1 is set to run
at that temperature again. Retraining for a particular temperature is only necessary when the
viscometer tube is changed or if sensor performance changes over time.
Note:
Sensor training uses
Test
and
Advanced
settings from the default method,
but
Default Wash
settings.
1.
Insert an empty vial into position 1 of the carousel.
2.
Fill a vial with a test solution that has a viscosity approximately 3 times higher than the lower
viscosity limit of the Ubbelohde tube. Insert the vial into position 2.
3.
In the
VISCPRO II Menu
, select
Service
>
[instrument group]
>
[instrument]
>
Train viscometer
tube sensors
. The
Train viscometer tube sensors
window opens.
4.
(Optional) Check
Prewash
to run a wash cycle prior to training sensors.
