KU-1 Viscometer
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Brookfield Engineering Labs., Inc. Page 1 Manual No. M/97-241-B1101
BROOKFIELD KU-1+ VISCOMETER
Operating Instructions
Manual No. M/97-241-B1101
SPECIALISTS IN THE
MEASUREMENT AND
CONTROL OF VISCOSITY
T
EL
800-628-8139 or 508-946-6200 F
AX
508-946-6262
www.brookfieldengineering.com
BROOKFIELD ENGINEERING LABORATORIES, INC.
11 Commerce Boulevard, Middleboro, MA 02346-1031 USA
Brookfield Engineering Labs., Inc. Page 2 Manual No. M/97-241-B1101
TABLE OF CONTENTS
I. INTRODUCTION............................................................................................................3
I.1 Components ....................................................................................................3
I.2 Options ............................................................................................................4
I.3 Viscometer Specifications ............................................................................... 4
I.4 Can Specifications...........................................................................................5
I.5 Utilities ............................................................................................................. 5
I.6 Printer Connection...........................................................................................5
II. OPERATION ..................................................................................................................6
II.1 Set-Up ............................................................................................................. 6
II.2 Taking Measurements ..................................................................................... 6
II.3 Troubleshooting...............................................................................................7
Appendix A - KU-1+ Calibration Information.........................................................................8
Appendix B - References ...................................................................................................12
Appendix C - Warranty Repair and Service........................................................................ 13
Brookfield Engineering Labs., Inc. Page 3 Manual No. M/97-241-B1101
I. INTRODUCTION
The Brookfield KU-1+ Viscometer measures fluid viscosity in Krebs units. The digital display of
the Viscometer shows viscosity in Krebs Units (KU) or in the associated grams value (gm). A
paddle type spindle is driven at 200 rpm by a constant speed motor. The reaction torque of the
spindle rotating at 200 rpm is converted to viscosity in Krebs Units. The Viscometer will measure
viscosity from 40 KU to 141 KU, at weights from 32 to 1,099 grams. Application reference
information can be found in ASTM-D562.
I.1 Components
The KU-1+ Viscometer package (Figure 1 and Figure 1.1) includes:
(1) KU-1+ Viscometer, upright rod and base (1) U.S. pint can (KU1-34) - not shown
(1) Paddle spindle (KU1-10) (1) Power Cord, 115 VAC (DVP-65) or
(1) US 1/2 pint can adapter (KU1-73) 220 VAC (DVP-66)
(1) US pint can adapter (KU1-74) (1) Operating instructions (M/97-241)
Figure 1 (front view) Figure 1.1 (side view)
Please check to be sure that you have received all components, and that there is no damage. If you
are missing any parts, please notify Brookfield or your local Brookfield agent immediately. Any
shipping damage must be reported to the carrier.
KU-1+
VISCOMETER
POWER
KREBS UNITS
gm
HOLD
KU1-74
KU1-10
KU1-73
Brookfield Engineering Labs., Inc. Page 4 Manual No. M/97-241-B1101
I.2 Options
I.2.1 Air Purge
The air purge option (Brookfield Part No.
KU-1A) allows the interior of the KU-1+ to
be pressurized with air (or an inert gas) when
the instrument is to be used in a hazardous
environment (Figure 2). A built-in pressure
switch turns the instrument off when the
pressure drops below 2.0 PSI (falling). The
switch comes on at 10.0 PSI (rising).
Connect a regulated clean air supply which
is non-corrosive to brass to the fitting shown
in Figure 2. Adjust the pressure to approxi-
mately 25 PSI.
Note: The pressure switch range is 0-40 PSI.
DO NOT CONNECT PRESSURE HIGHER
THAN 40 PSI TO THE SWITCH!
I.2.2 Optional Paste Spindle
The paste spindle, Part No. KU1-75Y, (Figure 3) is a special spindle;
it is not included in a normal shipment/order. The design consists of
offset rod-type vanes, approximately 2 mm diameter x 19 mm long.
This spindle is suitable for use with high consistency materials such as
roller mill pastes. Do not use this spindle to report normal Krebs Unit
measurements. Record the grams value shown in the digital display
and note that the paste spindle was used to make the viscosity
measurement.
I.3 Viscometer Specifications
Range: 40–141 KU
32–1,099 gm
Accuracy: ± 1% of full scale range
Repeatability: ± 0.5% of full scale range
Paddle speed: 200 rpm ± 0.1 rpm
Printer output: 25D-Type Centronics Parallel Printer Output
Net weight: 22 lb. (10 kg)
Gross weight: 25 lb. (11 kg)
Dimensions: 15 x 11 x 20
Ambient conditions: -20°C (-4°F) to 65°C (149°F)
Air Purge Fitting
Figure 3
Figure 2
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