Comparison table of rotor speed and test range of each model

For viscosity measurement of unknown samples, the viscosity value of the sample should be estimated first. Then select the corresponding groups of rotors and rotational speed combinations for measurement. When the approximate viscosity value of the tested fluid cannot be estimated, it should be assumed that the viscosity value of the sample is relatively high, and the test should be carried out with the rotor from small to large (volume) and the speed from slow to fast.

The principles of viscosity measurement are:

High-viscosity fluids use small (volume) rotors and slow speeds;
Low-viscosity fluids use large (volume) rotors and fast speeds;

Please refer to the following table for the test range corresponding to the combination of each type of rotor and speed:

rotor	No.0	No.1	No.2	No.3	No.4
Rotating speed	Full scale value mPa.s
60 r/min	10	100	500	2000	10000
30 r/min	20	200	1000	4000	20000
12 r/min	50	500	2500	10000	50000
6 rpm	100	1000	5000	20000	100000
3 r/min	200	2000	10000	40000	200000
1.5 r/min	400	4000	20000	80000	400000
0.6 r/min	1000	10000	50000	200000	1000000
0.3 r/min	2000	20000	100000	400000	2000000

rotor	No.21	No.27	No.28	No.29
Rotating speed	Full scale value mPa.s
50 r/min	100	500	1000	2000
20 r/min	250	1250	2500	5000
10 r/min	500	2500	5000	10000
5 r/min	1000	5000	10000	20000
2 r/min	2500	12500	25000	50000
1 r/min	5000	25000	50000	100000
0.5 r/min	10000	50000	100000	200000

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