beautypg.com

Cannon Instrument CMRV-4500 User Manual

Page 74

background image

68

CANNON

®

Mini-Rotary Viscometer CMRV-4500 Instruction & Operation Manual

Version 1.1e—October, 2011 •

CANNON

®

Instrument Company

2139 High Tech Road • State College, PA • 16803 • USA

5. Press the flashing

Start Test

button and proceed immediately to step 6.

6. Lift the locking pin and release the weight by lowering your hand

quickly and smoothly.

The CMRV-4500 will
measure the speed of rotor
rotation by timing the
revolution(s) of the pulley-
wheel as the weight falls.

NOTE

The total number of rotations
measured by the CMRV-4500
during the viscosity test depends
on the viscosity of the sample
and the values chosen in the
Advanced Settings box. Default
values for the Advanced Settings
correspond to the specifications
of the ASTM method selected for
the profile.

7. When the Viscosity LED on

the CMRV front panel stops
flashing, indicating the
conclusion of the viscosity
test, remove the hook-weight
from the string.

CAUTION

Do not remove the weight while the Viscosity LED is still flashing.

NOTE

To view test results as soon as they have been recorded in the data-
base, open an MRV Data Table analysis with the
Use Dynamic Update
option (see Chapter 13).

8. To test additional cells, repeat steps 1-7 above, testing in order from

left to right.

After all viscosity tests have been concluded, select

End Profile

from the

Instrument View window to terminate temperature control of the CMRV.

NOTE

No further testing can be conducted after temperature control has been
aborted.

Notes on viscosity testing

Do not let the large hook-weight swing back and forth during testing or
the apparent viscosity measurement may be distorted.

Viscosity data

The computer determines the apparent viscosity, along with the time
required for rotation of the rotor. Time and temperature data for the test is
recorded in the associated .ttd file.

Placing the large hook-weight in
preparation for the test.