BYK CAP 1000+, Руководство пользователя, Страница: 24 / 32

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Appendix A
SAMPLE SIZE
It is necessary that sufficient sample is placed between the cone and plate to
completely cover the surface of the cone when the cone is locked in the RUN
position. With sufficient sample, an excess of about 1 mm in width will be seen
around the periphery of the cone edge.
For calibration and best reproducibility of results, the sample sizes shown in Table
A1 should be used.
CAP 1000+ RANGES FOR CONES 01 THROUGH 10
To determine the full scale viscosity range (FSR) for any cone/speed, divide the
Cone Range Coefficient (refer to Table A2) by the rotational speed (RPM).
Full Scale Viscosity Range (Poise) =
Cone Range Coefficient
Equation A1
RPM
CAP 1000+ RANGES FOR CONES 11 THROUGH 20
S pindle M ultiplier C onstant ( SMC ):
SMC = (supplied by the manufacturer)
S hear R ate C onstant ( SRC ):
SRC = (supplied by the manufacturer)
Viscosity (poise) =
Shear Stress (dynes/cm2)
Equation A2
Shear Rate (sec-1)
Shear Stress (dynes/cm2) = Viscosity (poise) x Shear Rate (sec-1) Equation A3
Shear Rate =
__ ω __
Equation A4
sin θ
ω = Cone Speed (rad/sec) =
(
2π
)
x N
60
N = RPM
θ = Cone Angle (degrees)
r = radius of cone spindle
Viscosity (poise) =
Full Scale Viscosity Range x (% FSR )
Equation A5
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