Brookfield CAP2000 Viscometer - Manual (Page 19)

Brookfield Engineering Labs., Inc. Page 19 Manual No. M/94-310F
E
XAMPLE
: CAP 2000L Viscometer; Cone (02); running at 685 RPM;
temperature 25.0
°
C; % FSR = 73.8. Determine the viscosity (poise),
shear stress (dynes/cm 2 ), shear rate (sec -1 ).
Using Equation A1, determine the full scale viscosity range at 685 RPM:
Full Scale Viscosity Range (poise) = 3,750 = 5.47 poise
685
Using Equation A5, determine the viscosity at 73.8% of full scale range:
Viscosity (poise) = 5.47 (poise) x 73.8 = 4.04 poise
100
Using Equation A4, determine the shear rate:
Shear Rate (sec -1 ) = (2)(3.1416)(685) = 9,133 sec -1
(60)(sine 0.45)
Using Equation A3, determine the shear stress:
Shear Stress (dynes/cm 2 ) = (4.04)(9,133) = 36,897 dynes/cm 2