Brookeld Engineering Laboratories, Inc. Page 53 Manual No. M14-023
1) Determine Full Scale Viscosity Range using the AUTORANGE key on your instrument
or calculate with equation:
Full Scale Viscosity Range [cP] = TK
*
SMC
*
10,000
RPM
Where:
TK = 1.0 from Table D-2 (In Appendix D)
SMC = 10 from Table D-1 (In Appendix D)
Full Scale Viscosity Range
1
*
10
*
10,000
= 50,000 cP
2
e viscosity is accurate to (+/-) 500 cP (which is 1% of 50,000).
2) e viscosity standard uid is 12,257 cP. Its accuracy is (+/-) 1% of 12,257 or (+/-) 122.57 cP.
3) Total allowable error is (122.57 + 500) cP = (+/-) 622.57 cP.
4) erefore, any viscosity reading between 11,634.4 and 12,879.6 cP indicates that the
viscometer is operating correctly. Any reading outside these limits may indicate a viscometer
problem. Contact the Brookeld technical sales department or your local authorized
Brookeld dealer with test results to determine the nature of the problem.
Calculate the acceptable range of viscosity using DV1MRV with Small
Sample adapter at 10 RPM; Brookeld Standard Fluid 12,500 with a
viscosity of 12,257 cP at 25°C:
1) Determine Full Scale Viscosity Range by pressing the AUTORANGE key on your instrument.
Display shows 25,000 cP. e viscosity is accurate to +/- 500 cP (which is 2% of 25,000 cP).
2) e viscosity standard uid is 12,257 cP. Its accuracy is (+/-) 1% of 12,257 or (+/-) 122.57 cP.
3) Total allowable error is (122.57 + 500) cP = (+/-) 622.57 cP.
4) erefore, any viscosity reading between 11,634.4 and 12,879.6 cP indicates that the
viscometer is operating correctly. Any reading outside these limits may indicate a viscometer
problem. Contact the Brookeld technical sales department or your local authorized
Brookeld dealer with test results to determine the nature of the problem.
Example 2:
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