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Ubbelohde viscometers are for use with
transparent liquids. Unlike the Cannon-Fenske
Routine viscometer, suspended level viscometers possess the same
viscometer constant at all temperatures. This property is advantageous
when measurements are to be made at a number of different temperatures.
CANNON has improved the design of the Ubbelohde viscometer to
make a more rugged instrument called the Cannon-Ubbelohde viscometer.
Other suspended level viscometers include the
BS/IP/SL, BS/IP/SL(S), and
BS/IP/MSL viscometers.
Calibrated CU Series
Suspended level viscometers are used for measurement of kinematic
viscosity of transparent Newtonian liquids according to ASTM D 445 and
ISO 3104. Also used for evaluating jet and hydraulic lubricants.
Especially suited for use at temperatures above 93°C (200°F) or below
–18°C (0°F). Require no kinetic energy corrections over 0.5 to 100 000
centistokes range. Viscometer constant is same at all temperatures.
Specifications conform to ASTM D 446 and ISO 3105.
Provided with certificate of calibration and instruction sheet.
Minimum sample volume 11mL. Require liquid bath depth of 254 mm (10
inches); must be submerged to approximately 220mm (8.5 inches). |
|
* 250 sec
minimum flow time. All other sizes have flow times of 200 to 1000
seconds.
|
Size |
Approx. constant,
mm2/s2(cSt/s) |
Kinematic Viscosity Range
mm2/s(cSt) |
CU Uncalibrated Series |
CU Calibrated Series |
|
25* |
0.002 |
0.5 - 2 |
9721-J50 |
9721-K50 |
|
50 |
0.004 |
0.8 - 4 |
9721-J53 |
9721-K53 |
|
75 |
0.008 |
1.6 - 8 |
9721-J56 |
9721-K56 |
|
100 |
0.015 |
3 - 15 |
9721-J59 |
9721-K59 |
|
150 |
0.035 |
7 - 35 |
9721-J62 |
9721-K62 |
|
200 |
0.1 |
20 - 100 |
9721-J65 |
9721-K65 |
|
300 |
0.25 |
50 - 250 |
9721-J68 |
9721-K68 |
|
350 |
0.5 |
100 - 500 |
9721-J71 |
9721-K71 |
|
400 |
1.2 |
240 - 1200 |
9721-J74 |
9721-K74 |
|
450 |
2.5 |
500 - 2500 |
9721-J77 |
9721-K77 |
|
500 |
8 |
1600 - 8000 |
9721-J80 |
9721-K80 |
|
600 |
20 |
4000 - 20000 |
9721-J83 |
9721-K83 |
|
650 |
45 |
9000 - 45000 |
9721-J86 |
9721-K86 |
|
700 |
100 |
20000 - 100000 |
9721-J89 |
9721-K89 |
*Viscometers with special
constants, added temps, and before/after data are available by special
order at an additional cost. |
