Brookfield Engineering Laboratories, Inc. Page 20 Manual No. M/92-021-N0902
Appendix A - Cone/Plate Viscometer Set-Up
This Cone/Plate version of the DV-I+ 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).
DV-I+ Cone/Plate Viscometers, S/N 50969 and higher, have an Electronic Gap Setting 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-I+ Viscometer.
A.1 ELECTRONIC GAP SETTING FEATURES
TOGGLE SWITCH allows you to enable/disable
the Electronic Gap Setting Feature: left posi-
tion is OFF (disabled), right position is ON (en-
abled).
PILOT LIGHT is the red (LED) light; when illu-
minated, it means the Electronic Setting Func-
tion is sensing (enabled).
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 es-
tablishing 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) low-
ers 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
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