Brookfield Spiral Adapter User Manual
Page 13
Brookfield Engineering Labs., Inc.
Page 13
Manual No. M93-270-D0812
APPENDIX A -
Spiral Spindle Factors for Torque (% Scale) Measurements
Table A-1 applies to Brookfield Viscometer models with series designation LV, RV, HA, and HB.
The procedure for converting a torque value (% scale) into a viscosity value (cP) is accomplished
by multiplying the appropriate factor shown in Table A-1 by the torque reading on your Brookfield
Viscometer.
Spindle
Speeds
(RPM)
Spiral Spindle Factors
LV
RV
HA
HB
0.3
3,280.0
35,000
70,000
280,000
0.5
1,968.0
21,000
42,000
168,000
0.6
1,640.0
17,500
35,000
140,000
1.0
984.0
10,500
21,000
84,000
1.5
656.0
7,000
14,000
56,000
2.0
492.0
5,250
10,500
42,000
2.5
394.0
4,200
8,400
33,600
3.0
328.0
3,500
7,000
28,000
4.0
246.0
2,625
5,250
21,000
5.0
197.0
2,100
4,200
16,800
6.0
164.0
1,750
3,500
14,000
10.0
98.4
1,050
2,100
8,400
12.0
82.0
875
1,750
7,000
20.0
49.2
525
1,050
4,200
30.0
32.8
350
700
2,800
50.0
19.7
210
420
1,680
60.0
16.4
175
350
1,400
100.0
9.8
105
210
840
Table A-1
The full scale viscosity measurement range (in cP or mPa•s) for any given speed is obtained by multiplying
the corresponding spiral spindle factor in the above table by 100.