Brookfield RV1 User Manual

E0608
Brookeld Engineering Laboratories, Inc. Page 5 Manual No. M00-151-I0614
I. INTRODUCTION
e Brookeld Dial Reading Viscometer measures uid viscosity at given 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 Brookeld publication “More Solutions to Sticky Problems”, a copy of which was included with
your Dial Viscometer. e Dial Viscometer rotates a sensing element in a uid and measures the torque
necessary to overcome the viscous resistance to the induced movement. is is accomplished by driving
the immersed element, which is called a spindle, through a beryllium copper spring. e degree to
which the spring is wound, indicated by the red pointer, is proportional to the viscosity of the uid.
e Viscometer is able to measure over a number of ranges since, for a given spring deection, the actual
viscosity is proportional to the spindle speed and is related to the spindle's size and shape. For a material
of given viscosity, the resistance will be greater as the spindle size and/or rotational speed increase. e
minimum viscosity range is obtained by using the largest spindle at the highest speed; the maximum
range by using the smallest spindle at the slowest speed.
ere are four basic spring torque series oered by Brookeld:
Model Spring Torque (Dyne-cm)
LV 673.7
RV 7,187.0
HA 14,374.0
HB 57,496.0
e higher the torque calibration, the higher the measurement range. e viscosity measurement range
for each torque calibration may be found in Appendix A.
All units of measurement are calculated in units of centipoise (cP) by using a look-up table known
as "the Brookeld Factor Finder" to convert torque reading. e equivalent units of measurement
in the SI system are calculated using the following conversions:
CGS SI
Viscosity: 1cP = 1mPa•s
Torque: 10
7
dyne-cm = 1Newton•m
I.1 Components
e following items are provided with your instrument:
Quantity Description Part No.
1 Dial Reading Viscometer Depends on Model (Spring Torque)
1 Laboratory Stand Model A
1 Spindle Set (depends on torque range) SSL (LV 61-64, formerly called LV 1-4) or
SSR (RV 2-7) or
SSH (HA/HB 2-7)
1 Guard Leg B-20Y (LV) or
B-21Y (RV) or
No guardleg for HA/HB torque range
1 Power Supply AV-6 115 includes DVP-65 Power Cord
AV-6 230 includes DVP-66 Power Cord
1 Carr ying Cas e 001Y
1 Shipping Cap B-30-1
1 Instruction Manual M00-151
1 Factor Finder CC-9

Brookfield RV1 Specifications

General

Brand	Brookfield
Model	RV1
Category	Measuring Instruments
Language	English