Brookfield Dial Viscometer Manual do Utilizador descarregar pdf (Página 15)

Brookfield Engineering Laboratories, Inc. Page 15 Manual No. M/85-150-P700

The ratio of (ωr) and (c) is a constant for any value of (r). Since (c) is a maximum at cone radius

(

), the shear rate is related to (ω) and sin θ.

For the Wells-Brookfield Cone/Plate Viscometer, the mathematical relationships are:

Shear Stress (dynes/cm

)= T

2/3 π r

Shear Rate (sec

-1

Sin

Viscosity (centipoise or mPa•s) = Shear Stress x 100

Shear Rate

where:

T = % Full Scale Torque (dyne-cm)

r = Cone Radius (cm)

= Cone Speed (rad/sec)

= Cone Angle (degrees)

Angle Radius

Cone Spindle (deg.) (cm)

CP-40 or CPE-40 0.8 2.4

CP-41 or CPE-41 3.0 2.4

CP-42 or CPE-42 1.565 2.4

CP-51 or CPE-51 1.565 1.2

CP-52 or CPE-52 3.0 1.2

Viscometer Spring Torque

Model Series (Dyne-Centimeter)

LV 673.7

RV 7,187.0

HA 14,374.0

HB 57,496.0

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 34 35

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