Brookfield DV2+Pro Viscometer - Manual (Page 65)

Brookfield Engineering Labs., Inc. Page 65 Manual No. M03-165-F0612
Appendix A - Cone/Plate Viscometer Set-Up
This Cone/Plate version of the DV-II+Pro uses the same operating instruction procedures as described
in this manual. However, the “gap” between the cone and the plate must be verified/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 the temperature recommended. Maximum temperature for Cone/Plate operation is
80ºC. Maximumoperational temperature of sample cup is 100 ºC. Personal protection is recommended
when controlling to temperatures above 80ºC.
Note: Mic ring will become hot when controlling sample cup at temperatures
above 50ºC.
Programmable DV-II+Pro Cone/Plate Viscometers, S/N 50969 and higher, have an Electronic Gap Set-
ting feature. This feature enables the user to easily find the 0.0005 inch gap setting that was established
at Brookfield 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).
Note: Be sure the light is off before
introducing the test sample.
CONTACT LIGHT
is the yellow (LED) light; when it
first turns on, the “hit point” has been found.
SLIDING REFERENCE MARKER is used after finding 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 A-1