Brookfield RVDV-II+Pro - Appendix A - Cone;Plate Viscometer Set-Up; A.1 Electronic Gap Setting Features

Brookeld Engineering Labs., Inc. Page 50 Manual No. M/03-165-D0410
Appendix A - Cone/Plate Viscometer Set-Up
This Cone/Plate version of the DV-II+Pro uses the same operating instruction procedures as de-
scribed in this manual. However, the “gap” between the cone and the plate must be veried/adjusted
before measurements are made. This is done by moving the plate (built into the sample cup) up
towards the cone until the pin in the center of the cone touches the surface of the plate, and then by
separating (lowering) the plate 0.0005 inch (0.013mm).
When operating the Cone/Plate at elevated temperature, the gap must be set with the cup and spindle
equilibrated at that temperature. Maximum temperature for Cone/Plate operation is 100ºC.
Programmable DV-II+Pro Cone/Plate Viscometers, S/N 50969 and higher, have an Electronic Gap
Setting feature. This feature enables the user to easily nd the 0.0005 inch gap setting that was es-
tablished at Brookeld prior to shipment.
The following information explains how to set the Electronic Gap and verify calibration of the DV-
II+Pro Viscometer.
A.1 ELECTRONIC GAP SETTING FEATURES
TOGGLE SWITCH allows you to enable/disable the
Electronic Gap Setting Feature: left position is
OFF (disabled), right position is ON (enabled).
PILOT LIGHT is the red (LED) light; when illumi-
nated, it means the Electronic Setting Function is
sensing (enabled).
CONTACT LIGHT is the yellow (LED) light; when it
rst turns on, the “hit point” has been found.
SLIDING REFERENCE MARKER is used after nding the
“hit point;” it is the reference for establishing the
0.0005 inch gap.
MICROMETER ADJUSTMENT RING is used to move the cup up or down in relation to the cone spindle.
Turning the ring left (clockwise) lowers the cup; turning it right (counterclockwise) raises the cup.
Each line on the ring represents one scale division and is equivalent to 0.0005 inch movement of
the plate relative to the cone.
Pilot Light
(red)
Toggle Swtich
Contact Light
(yellow)
Sliding Reference
Marker
Micrometer
Adjustment Ring
Figure A1