Brookfield CAP2000 Viscometer - Manual (Page 15)

Brookfield Engineering Labs., Inc. Page 15 Manual No. M/94-310F
d) If a printer is to be used, it should be connected (AC power & viscometer to printer
cable). The CAP1000/2000 will print automatically when a reading is taken if the
printer is connected and “on line.”
Select and attach the cone (Section II.2).
Note: 1. Lock the cone tightly into the adapter.
2. When measuring volatile samples such as paints and coatings, and when
using either a high temperature CAP 1000H or CAP 2000H, the solvent
trap must be put in place over the cone to prevent the test sample from
drying out during the rotation of the cone.
Set the temperature control (Section II.5).
2. Set the cone number.
3. Lower the handle placing the cone onto the plate. Lock the handle into its lowest position.
Drop the solvent trap over the cone.
Note: Allow ten (10) minutes for the cone to come to equilibrium temperature with the
plate.
4. Raise the handle. Place the sample to be measured onto the plate below the cone and
solvent trap. Refer to Appendix A for recommended sample sizes. Lower the cone and
solvent trap.
Note: 1. Lower the handle GENTLY. DO NOT FORCE THE CONE ONTO THE
PLATE.
2. The sample must completely cover the face of the cone and extend beyond the
edge of the cone about 1.0 mm.
3. Release the solvent trap placing it onto the plate over the cone so it does not
touch the cone shaft.
5. Allow the cone, plate and sample to equilibrate to the temperature control setting.
Note: A minimum of one (1) to three (3) minutes equilibrium time is recommended,
depending upon the volatile characteristics of the test sample.
6. Set the RPM (Speed). (Section II.4).
7. Set the Time for rotating the cone (Section II.6).
8. Select a Sample Number (optional, Section II.3).
9. Put the printer on-line (optional, Section II.7).
10. Press the RUN key and execute the viscosity measurement.
Note: Due to the dynamics of shearing a fluid in the CAP “H” series Viscometers, the
temperature display will indicate a deflection from the equilibrium temperature
setting as the cone begins rotating. The temperature display indicates the tempera-
ture of the plate and the momentary changes show the cycling of the temperature
control at high temperature. The precision of the viscosity measurement is main-
tained within the limits specified in Table 3.1.