Brookfield CAP 2000+H User Manual

Brookeld Engineering Labs., Inc. Page 17 Manual No. M02-313E1209
III. OPERATION
The CAP 2000+ Viscometer rotates a precisely machined cone spindle over a temperature
controlled plate shearing the test sample over a range of speeds from 5 to 1000 RPM. This
provides a comprehensive capability to analyze materials for viscosity behavior as a function
of both shear rate and temperature. Tests can be run in standalone mode or under PC control.
This chapter explains how to use the CAP 2000+ toward these objectives.
III.1 Full Scale Range and Accuracy of Measurement
Full Scale Range (FSR) viscosity is the maximum viscosity that can be measured and occurs
when the % torque is 100. Brookeld recommends that viscosity measurements be made be-
tween 10 and 100% torque.
There are two tables to consult for viscosity range information, depending on which torque
model viscometer you purchased. To determine which torque model you have, consult the se-
rial tag of your viscometer or the certicate of calibration that accompanied the instrument or
the display on power up.
23CAP 2000+ = Low Torque CAP 2000+ = High Torque
Full Scale Range (FSR) is based on the cone spindle your are using, the torque model of your
viscometer, and the speed of spindle rotation. The tables below provide information on FSR
by torque model for the most common factory set speeds:
Table III-1: Full Scale Range Viscosity for Low Torque CAP 2000+
Cone
Number
Cone
Range
Constant
Shear Rate
Constant
FSR Poise
at 100
RPM
FSR
Poise at
750 RPM
FSR Poise
at 900
RPM
FSR Poise at any
RPM
01
1875 13.33N
0.83
0.11 .0597
1875/(22.7
*
N)
02
3750 13.33N
1.65
0.22 .165
3750/(22.7
*
N)
03
7500 13.33N
3.30
0.44 .330
7500/(22.7
*
N)
04
15000 3.33N
6.61
0.88 0.73
15000/(22.7
*
N)
05
30000 3.33N
13.22
1.76 1.47
30000/(22.
*
N)
06
75000 3.33N
33.04
4.41 3.67
75000/(22.7
*
N)
07
3150 2N
1.39
‡ ‡
3150/(22.7
*
N)
08
12500 2N
5.51
‡ ‡
12500/22.7
*
N)
09
50000 2N
22.3
‡ ‡
50000/(22.7
*
N)
10
5000 5N
2.20
0.29 2.20
5000/(22.7
*
N)
N= RPM
Poise x 100 = centiPoise
‡use of this cone at these RPM is not recommended

Brookfield CAP 2000+H Specifications

General

Brand	Brookfield
Model	CAP 2000+H
Category	Measuring Instruments
Language	English