Brookfield Spiral Adapter User Manual
BROOKFIELD SPIRAL ADAPTER
SPECIALISTS IN THE
MEASUREMENT AND
CONTROL OF VISCOSITY
T
EL
800-628-8139 or 508-946-6200 FAX 508-946-6262
www.brookfieldengineering.com
BROOKFIELD ENGINEERING LABORATORIES, INC.
11 Commerce Boulevard, Middleboro, MA 02346-1031 USA
Operating Instructions
Manual No. M93-270-D0812
Brookeld Engineering Labs., Inc. Page 1 Manual No. M93-270-D0812
TABLE OF CONTENTS
I. Introduction ...................................................................................................................................5
II. Components ...................................................................................................................................6
III. Specications for Test Set Up ...................................................................................................7
IV. Installation ......................................................................................................................................8
V. Operation ..................................................................................................................................... 10
V.1 Theory ......................................................................................................................................................... 10
V.2 Test Procedure .......................................................................................................................................... 10
V.3 Data Gathering ........................................................................................................................................ 11
V.4 Application Examples - Solder Paste ............................................................................................... 12
V.5 Cleaning the Spiral Adapter ................................................................................................................ 12
Appendix A - Spiral Spindle Factors for Torque Measurements .................................................................. 13
Appendix B - Online Help and Additional Resources ..................................................................................... 14
Appendix C - Warranty Repair and Service ......................................................................................................... 15
I. INTRODUCTION
Sample
Material
Paste
Container
Spiral
Chamber
Spiral
Spindle
When used with any Brookeld Viscometer/Rheometer, the Spiral Adapter can measure uid viscosity
at various shear rates. Viscosity is a measure of a uid’s resistance to ow. You will nd a detailed
description of the mathematics of viscosity in the Brookeld publication “More Solutions to Sticky
Problems”, a copy of which was included with your Viscometer/Rheometer and is also available as a
pdf le on the Brookeld website.
The Spiral Adapter has an inner, threaded spindle surrounded by a concentric outer cylinder, as shown in
Figure 1. This combination causes the sample to be continuously pumped up through the gap between
the rotating spindle and the outer cylinder. The material reaches a steady state of ow during which
viscosity is measured.
Figure 1
The principle of viscosity measurement is to drive the spiral spindle (which is immersed in the test
uid) through a calibrated spring in the Viscometer/Rheometer. The viscous drag of the uid against
the spindle is measured by the spring deection.
The measuring range of the Spiral Adapter [in centipoise (cP) or milliPascal seconds (mPa•s)] is
determined by the rotational speed of the spindle, the length and effective diameter of the spindle, the
length and diameter of the chamber the spindle is rotating in, and the full scale torque of the viscometer’s
calibrated spring.
Brookeld Engineering Labs., Inc. Page 5 Manual No. M93-270-D0812
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