Cannon HTHS Series II Installation instructions manual

HTHS Series II
High Temperature
High Shear
Viscometer
Instruction
& Operation
Manual

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CANNONCANNON
CANNONCANNON
CANNON
®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
CANNONCANNON
CANNONCANNON
CANNON
®Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
CONTENTS
1INTRODUCTION 1
Overview ............................................................................................................................ 1
Manual .................................................................................................................... 1
Components ............................................................................................................ 1
HTHS Specifications .......................................................................................................... 2
Operator safety ................................................................................................................... 3
Apparatus description ......................................................................................................... 5
Operation ............................................................................................................................ 6
Safety features: ................................................................................................................... 6
Protective housing .................................................................................................. 6
Pressure relief ......................................................................................................... 6
Thermostat .............................................................................................................. 6
2ASSEMBLY 7
Unpacking/inspection ......................................................................................................... 7
Installation procedure ......................................................................................................... 7
Connecting the Syringe Hose Adapter ................................................................... 8
Connecting the nitrogen supply.............................................................................. 8
Checking the power supply .................................................................................... 9
Verifying VPU operation ........................................................................................ 9
3HIGH SHEAR VISCOSITY CALCULATOR 11
Program Installation ......................................................................................................... 12
Initial software configuration ........................................................................................... 12
Configuration disk ................................................................................................ 12
4HTHS PRE-OPERATION CHECKLIST 13
5STANDARD HTHS TEST PROCEDURE 15
Preliminary checklist ........................................................................................................ 15
Soaking the test sample .................................................................................................... 16
Setting sample volume ..................................................................................................... 17
Testing sample(s) .............................................................................................................. 18

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
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6DAILY MAINTENANCE 21
7CALIBRATION 23
8MAINTENANCE & REPAIR 25
Flushing viscometer cells ................................................................................................. 25
Clearing a blocked capillary tube ..................................................................................... 25
Cleaning the capillary........................................................................................... 25
9SPARE PARTS LIST 27
10 WARRANTY/RETURN INFORMATION 29
Products limited warranty................................................................................................. 29
Reagent and chemical warranty........................................................................................ 29
Returning a product to CANNON®................................................................................. 30
AAPPENDIX A—HTHS CAPILLARY REPLACEMENT 31
Replacing an HTHS capillary........................................................................................... 31
Parts/Tools required:............................................................................................. 31
Removing the viscometric cell ............................................................................. 31
Removing the capillary......................................................................................... 32
Reassembling the cell ........................................................................................... 33
High-Temperature High-Shear Rheometer
Cell Calibration Record.................................................................................................... 35
BAPPENDIX B—HTHS RUPTURE DISC REPLACEMENT 37
Replacing an HTHS rupture disc...................................................................................... 37
Installation ........................................................................................................................ 37
Preventive maintenance.................................................................................................... 38
CAPPENDIX C–FIGURES & DIAGRAMS 39
Plug Valve construction .................................................................................................... 39
Viscometric cell and exit capillary (cutaway view) ......................................................... 40

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
CANNONCANNON
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®Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
CHAPTER
1
INTRODUCTION
Overview
The CANNON®High-Temperature High-Shear (HTHS) Series II Vis-
cometer is designed to determine the viscosity of engine oils and other
oils under conditions of high shear at high temperatures.
The HTHS Series II is capable of testing at a temperature of 150°C as
specified in ASTM D 5481. For other applications, temperature may be
set as low as 25°C above ambient.
Oil samples are introduced into the viscometric cells and then propelled
through the glass capillary tubes at the test temperature to obtain various
shear rates. The HTHS Series II monitors the test and records the results.
Data can then be analyzed via the computer software and test results can
be displayed and printed.
Manual This manual provides information about:
Functions and operation of the HTHS Series II
HTHS testing method
Basic maintenance and repair
For additional details regarding the High Shear Viscosity Calculator, a
data analysis software
package for Windows®
provided with the HTHS
Series II, consult the
software manual.
Components The HTHS Series II vis-
cometer includes 5 visco-
metric cells in a
thermostated block with an
internal temperature control
system, a digital pressure
measuring system, auto-
matic timer, vacuum/
pressure controls and waste
receiver.
Patents
U.S. Patent Numbers:
4,658,636; 4,723,442
The CANNON
®High-Temperature High-
Shear (HTHS) Series II Viscometer

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
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HTHS Specifications
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NOTE The CANNON®High Temperature High Shear Series II Viscometer
meets the high shear testing requirements of ASTM D 5481. SAE J300
(DEC99) requires HTHS viscosities from 2.6 to 3.7 mPa•s. Because the
HT75 standard has a nominal viscosity of 2.7 mPa•s and the HT150
standard has a nominal viscosity of of 3.7 mPa•s, CANNON®recom-
mends that the users calculate cell volumes using either of these stan-
dards.

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
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Operator safety
Please observe the following safety procedures and notices for proper
operation of your HTHS Series II instrument. Deviation from the installa-
tion, operation or maintenance procedures described in this manual may
result in a hazardous situation and may void the manufacturer's warranty.
• Make sure that your unit is operated only by qualified personnel
• Make sure that you read and understand all operating instructions
and safety precautions listed in this manual before installing or
operating your unit. If you have questions regarding instrument
operation or documentation, contact CANNON®Instrument Com-
pany.
• Transport the unit with care. Sudden jolts or drops may cause dam-
age to components.
• Observe all warning labels.
• Never remove warning labels.
• Never operate damaged or leaking equipment.
• Never operate the equipment with damaged mains power cables.
• The instrument power cord should only be connected to a suitable
AC mains power source (with protective earth ground) matching the
specifications of the S/N label on the instrument rear panel.
• Position power cords so that they are not likely to be walked on or
pinched by items placed on or against them. Keep all connections as
neat as possible.

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
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• To disconnect the power cord, pull it out by the plug. Never pull the
cord itself.
• Always turn off the unit and disconnect the mains cable from the
power source before performing approved service or maintenance
procedures, or before moving the unit.
• Refer all service and repairs to qualified personnel.
• Do not attempt to service the unit beyond the service and/or repair
procedures detailed in this manual or other documentation provided
by the manufacturer. Contact CANNON®Instrument Company for
all additional service/repair needs.
In addition to the cautionary statements listed previously, additional
cautions may be posted throughout this manual. These warnings may be
designated by an appropriate symbol inside an equilateral triangle.
General cautions are indicated with an exclamation point (see diagram,
left). Read and follow these important instructions. Failure to observe
these instructions can result in permanent damage to the unit, significant
property damage, and personal injury.
Hot surface cautions (see diagram, left) may be attached on or near hot
surfaces of the instrument. Avoid touching these surfaces during instru-
ment operation above 50°C.
The Protective Conductor Terminal symbol is used to indicate required
ground connections for your instrument electrical supply.
WARNING When supplying power to this instrument, connect the protective ground
(earth) terminals of the instrument to the protective conductor of the
(supplied) line (MAINS) power cord. The main plug for the power cord
should only be inserted in a socket outlet (receptacle) provided with a
protective ground (earth) contact. Do not use an extension cord (power
cable) without a protective conductor (grounding).
The ~MAINS symbol indicates instructions or connections for the AC
power supply. TheAC Power input must match the electrical specifica-
tions listed on the label on the rear panel of the instrument. The supplied
AC Mains power cord must be attached to the connector labelled
~MAINS. This connection serves as a means of disconnect and should be
readily accessible.
The (O) symbol indicates the OFF position for the electrical switches for
your unit (AC Mains or accessories).
Do not use this equipment in a manner not specified by the manufacturer.
If you do, the protection provided by the equipment may be impaired,
and you may void the manufacturer warranty.
Protective Conductor
General Caution
Hot Surface Caution
AC Power Input Symbol
Supply OFF Symbol
( O)
MAINS

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
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Apparatus description
WARNING! The HTHS has been designed for testing of hot oil samples under high
pressure. Care should be taken to perform sample tests per the proce-
dures described in this manual.
The High-Temperature High-Shear Series II Viscometer consists of a
heating device (an aluminum thermostatic block) with cavities housing
five viscometric cells. The block permits temperature regulation of the
test sample from 30°C to
150°C, ± 0.1°C. Compo-
nents and accessories
include the waste-oil
receiver, Vacuum Pressure
Unit (built-in), digital timer
mechanism, soak cycle
timing watch, thermal
sensors and safety devices.
Waste-oil receiver
The waste-oil receiver (see
photo) consists of a recess
underneath the block with
apertures for the exit tubes
from the five test cells. Aplastic container is placed under the tubes to
catch the oil sample as it is expelled from the viscometer cells. The
container slides into place at the left front of the HTHS Series II. A
hinged door provides protection from hot oil. At the rear, an internal fan
draws vapors into the exhaust manifold.
Cell capillaries
Each viscometric cell contains a borosilicate-glass capillary sealed with
Viton®gaskets at each end. A capillary support seats the capillary tube in
the cell.
NOTE Matching of capillary
lengths from one test
cell to the next within
1 mm will allow the
individual cell
calibrations to be
more closely
matched, making
subsequent runs of identical sample in different cells more repeatable.
Matched capillary sets supplied with the instrument at initial purchase
and are also available for purchase from CANNON®.
Nitrogen supply
The user-supplied nitrogen gas cylinders should be fitted with a pressure
regulator to reduce the pressure supplied to the HTHS Series II to no
more than 500 psi. Testing pressures will range from 100 to 500 psi.
CAUTION Nitrogen is the only gas recommended as a source of pressure for the
HTHS Series II viscometer.
HTHS with waste oil receiver
The HTHS cell capillary

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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Operation
Oil is introduced into the cells via the syringe-like
charge cylinder(s) (see photo). The oil sample is
filtered through a screen, then warmed to test
temperature in the viscometric cell and finally
propelled under high pressure from the cell through
a narrow exit tube. The oil sample is expelled into
a plastic container in the waste-oil receiver. A
digital timer tracks the duration of the test run.
Safety features:
Protective housing The HTHS components are protected from damage
by a sturdy metal housing. The housing also
prevents direct operator contact with the heater
block assembly.
Pressure relief The HTHS ballast tank stores pressurized gas from
the user nitrogen supply for the HTHS. If pressure
in the tank exceeds 700 psi, the internal HTHS
pressure relief rupture disc will vent gas to atmo-
sphere until the gas source is turned off or depleted.Afailed rupture disc
must be replaced prior to resuming HTHS operations. See APPENDIX B
for additional information on rupture disc replacement.
HTHS internal rear view including pressure relief rupture disc
assembly
Thermostat The HTHS Series II is equipped with a thermostat that prevents the
instrument from overheating. If temperature rises to an unacceptable
level (160°C ± 5°C), power will be removed from the HTHS and will not
be restored until the instrument has cooled to a safe state.
Charge cylinder
in Luer fitting

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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CHAPTER
2
ASSEMBLY
The CANNON®High Temperature-High Shear (HTHS) Series II Vis-
cometer is shipped with only minor assembly required. The five visco-
metric cells are shipped in place. Several accessories are included and
must be installed prior to HTHS operation.
Follow the directions below to set up the HTHS:
Unpacking/inspection
1. Remove all components from the shipping container(s).
2. Remove any and all packing materials (styrofoam, etc.) from the
components.
3. Compare and verify shipped materials by comparing equipment
items with packing/parts list(s). Report missing items to CANNON®
Instrument Company immediately.
4. Inspect each component for signs of damage. Report damages to the
shipper and to the CANNON®Instrument Company immediately.
Damaged items
Retain all packing materials until the instrument is connected and func-
tioning properly. If any component(s) must be returned to CANNON®
Instrument Company, the damaged item(s) should be packaged in the
original shipping container. Refer to the final chapter of this manual for
instructions on returning defective equipment. Customers outside the
United States should contact the local CANNON®dealer for procedures
on returning products to CANNON® .
CAUTION The HTHS is a precision instrument. Great care should be taken in
handling the equipment.
Installation procedure
1. Attach the included power cord to the connector marked MAINS on
the lower rear panel of the HTHS . Do NOT plug the power cord into
a power outlet at this time.
2. Place the 2-piece panel collar over the circular opening on top of the
HTHS housing.
3. Place the cell cover over the viscometer cells and slide it into place
inside the panel collar.

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
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Swagelok™ connections
Connecting the Syringe Hose Adapter
The Syringe Hose Adapter is an adapter plate with a hose connection
which permits introduction of both vacuum and air pressure to the
syringe-like charge cylinders. The adapter is designed to slide over the
upper aperture of the charge cylinder and provide an airtight seal when
the sponge pad on the underside of the adapter is pressed against the lip
of the charge cylinder.
The adapter is shipped with a length of clear
1/16 inch plastic tubing. Follow the proce-
dure below to connect the adapter to the
built-in Vacuum Pressure Unit of the HTHS.
1. Locate the adapter plate and the length
of clear 1/16 inch plastic tubing.
2. Slide one end of the plastic tube over
the fitting on the adapter plate.
3. Slide the other end of the plastic tube
over the hose fitting on the quick-
connect hardware.
4. Push the hardware into the connector
atop the HTHS by pushing downward.
NOTE To release the hardware, press down on the
knurled portion of the connector.
Connecting the nitrogen supply
Connect the regulated nitrogen supply to the brass intake at the back of
the HTHS unit, using the procedure below:
1. Locate the 10' length of 1/8 inch copper tubing and Swagelok®
connectors provided.
2. Secure the tubing to the brass intake at the left rear of the HTHS unit
using the Swagelok®connectors (see photo). To tighten, insert the
tubing into the fitting, tighten finger-tight and then tighten an addi-
tional 3/4 turn with a wrench. The intake is located to the left of the
MAINS power cord connector.
3. Connect the other
end of the copper
tubing to your
nitrogen supply.
CAUTION The nitrogen supply must be equipped
with a pressure regulator preventing
the release of gas at pressures above 500 psi.
Syringe Hose Adapter
installed

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
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Checking the power supply
1. Connect the power cord to an appropriateAC power source (see rear
panel label for power input requirements).
2. Twist the front panel POWER switch to the right to provide power
to the HTHS unit.
The timer and pressure displays will light up.
The exhaust fan will begin operating.
The Watlow®temperature display will indicate ambient and target
temperature.
The instrument will begin heating the block to the target temperature.
Verifying VPU operation
Check the operation of the built-in Vacuum Pressure Unit (VPU) as
follows:
1. Turn the front panel PUMP switch ON and toggle the
PRESSURE/VACUUM switch to PRESSURE. You should
hear the pump operating.
2. Place your finger over the end of the black syringe hose
adapter that is connected to the top of the unit by a clear
plastic tube. You should feel the pressure of the air flow. The
rate of flow is not adjustable.
3. Flip the PRESSURE/VACUUM switch to VACUUM and
check the adapter for a slight suction with your finger.The
VPU has been carefully adjusted at CANNON®but it may
be necessary to readjust the force of the vacuum by turning
the ADJUST dial on the front panel of the unit. The amount
of force determines the relative speed at which oil is drawn
into the charge cylinder. You may experiment with an oil
sample to fine-tune the adjustment (see Soaking the sample,
Chapter 5).
To increase the force of the vacuum, rotate the dial clock-
wise; to decrease the force of the vacuum, rotate the dial
counterclockwise.
CAUTION The flow of oil should be regulated in such a way that
the oil is not drawn into the charge cylinder too quickly. If
this happens, the oil may be drawn into the VPU via the
syringe hose adapter, possibly contaminating future
samples and damaging the unit.
4. Turn the pump OFF and press the HTHS power switch in to
turn it off.
MAINS

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CHAPTER
3
HIGH SHEAR VISCOSITHIGH SHEAR VISCOSIT
HIGH SHEAR VISCOSITHIGH SHEAR VISCOSIT
HIGH SHEAR VISCOSITYY
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Software features
The High-Shear Viscosity Calculator is a standalone software package
that calculates viscosity of a sample in mPa·s (cP) using efflux time and
pressure values obtained during testing with the CANNON®High-
Temperature High-Shear Viscometer (HTHS). The Calculator also
provides a routine for ensuring the accuracy of constants used in viscos-
ity calculation.
Designed for use in conjunction with the HTHS, the Calculator incorpo-
rates a 15-minute temperature equilibrium timer for samples heating in
the test cells. The Calculator can also recommend a Target Pressure,
based on the user’s best guess for sample viscosity, to achieve the desired
shear rate with the HTHS test—this feature may considerably reduce the
time required to achieve an acceptable shear rate with the HTHS instru-
ment.
A computer is used to run the software for the High-Temperature High-
Shear Viscometer, but is not physically attached to the instrument. The
HTHS software program is for data analysis only, and NOT for control-
ling or monitoring HTHS tests.
For more information on using the High Shear Viscosity Calculator with
your HTHS instrument, and for details on the calibration procedure, see
the High Shear Viscosity Calculator Instruction Manual.
Computer
The table below provides minimum specifications for successful opera-
tion of the High Shear Viscosity Calculator.
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letnI
®
muitneP
®
)rettebrozHM661(tnelaviuqero
swodniWSM
®
TN/0002/89/59
®
PX/
®
yromemMARsetybagem23
esuomdna)dednemmocerroloc(rotinom,draobyeK
swodniW
®
elbachtiwretnirpelbitapmoc-
ecapsksiddrahfosetybagem02
NOTE

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
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Ifacomputer wasorderedfrom CANNON®fortheHTHS, thecomputer will
meetthe minimumconfigurationrequirements.
Program Installation
Before installing the High-Shear Viscosity Calculator software, turn on
your computer and make certain that the Windows®operating system is
performing normally. Close all other software programs before beginning
the installation procedure below:
Checklist
1. Place your High-Shear Viscosity Calculator installation CD-ROM in
your computer’s CD-ROM drive (usually D:).If the installation
program is not initiated automatically, click Start/Run and click the
Browse ... button to select the SETUP program on the CD-ROM
drive from the RUN window. Click Open. Then click OK.
2. Follow the installation program prompts to complete the installation.
The default path for installation is C:\Program Files\CANNON
Instrument Company\HTHS.
The setup program will install the High-Shear Viscosity Calculator files
to the drive and directory specified. The program will also create a
shortcut icon on your Desktop.
Initial software configuration
Configuration disk Your High-Temperature High-Shear Viscometer is shipped with a Con-
figuration floppy disk with initial software calibration information
derived from HTHS factory tests.
Configuring software
Prior to recording test data with the High-Shear Viscosity Calculator
software, copy the configuration files from the floppy disk to the installa-
tion directory for the High-Shear Viscosity Calculator (the default
directory is:
C:\Program Files\Cannon Instrument Company\HTHS).
Then start (or restart) the software to load the configuration data.
For more information on configuring your software to conform to HTHS
characteristics, consult the High Shear Viscosity Calculator Instruction
Manual.

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
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CHAPTER
4
HTHS PRE-OPERATION
CHECKLIST
WARNING! The HTHS has been designed for testing of hot oil samples under high
pressure. Care should be taken to perform sample tests per the proce-
dures described in this manual.
To verify that the HTHS is functioning correctly, follow the checklist
below:
Checking nitrogen supply
1. Turn the HTHS power switch clockwise to turn it on. Ensure that the
regulated nitrogen supply is providing pressurized nitrogen gas to the
HTHS via the rear panel connection (see photo). Listen for signs of
gas leakage.
HTHS Series II nitrogen connection to internal valve system (panel
removed to provide internal detail)
Checking solenoid valves
2. If there is no audible indication of gas leakage, depress and hold the
front panel push button switch labeled INCREASE ( ). This will
actuate the solenoid valve that admits nitrogen from the regulated
nitrogen supply source to the ballast tank.As gas flows into the
ballast tank, the reading on the front panel digital pressure indicator
should steadily increase. Increase pressure to about 100 psi. To stop
the flow of gas, release the INCREASE switch. If the pressure in the
ballast tank rises above the desired level, push and hold the button
solenoid switch labeled DECREASE ( ) to vent gas from the
ballast tank to the atmosphere. Release the button when the desired
pressure has been obtained.

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
NOTE There will be a time delay after the switch is released and before the
HTHS digital pressure display stabilizes. This is normal during filling and
venting the ballast tank. You may need to practice working with the valve
settings to establish the desired pressure in a relatively short time.
CAUTION The internal valve system for the HTHS Series II includes a replaceable
rupture disc as a safety measure to prevent pressure from rising above
700 psi. HTHS pressure settings above 500 psi are not recommended.
3. Ensure that all of the plug valves at the top of the viscometric cells
are closed. When you are done, all valve handles should be in the
horizontal position.
4. Select a test cell using the Cell Selection switch. Then press the
Start/Stop button to release nitrogen gas into the selected cell. Listen
for the hiss of nitrogen gas escaping from the exit tube of the visco-
metric cell. The digital display will indicate a drop in pressure, and
the digital timer will start.
5. Press the Start/Stop button again to stop the flow of nitrogen.
6. Repeat steps 4 and 5, changing the Cell Selection switch to each of
the other four cells to ensure that the valve system is working prop-
erly. Note that the digital timer will reset for each test.
7. Check the Watlow®temperature display. The heater for the aluminum
thermostatic block is energized when the power switch is turned on. The
display indicates current and target block temperatures.After the power
has been on for a while, the temperature indicator should show that the
temperature of the block is rising.
8. Use the and buttons on the Watlow®temperature meter to
select the target temperature (normally 150°C).Allow the tempera-
ture to stabilize at that setting. The temperature can be set for any
value up to 150°C. It is necessary for the HTHS to stabilize temperature
at the desired temperature before proceeding with actual viscosity tests.
This may require more than two hours.
NOTE For temperature meter calibration and other meter options unrelated to
HTHS testing, consult the Watlow®meter Operation Manual.
9. Insert a glass charge cylinder onto each of the five Luer fittings on
the top of the viscometric cells and rotate the cylinder clockwise to
lock it in place.
NOTE The HTHS will not begin a test unless all plug valves are in the closed
(horizontal) position).

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
CHAPTER
5
STANDARD HTHS TEST
PROCEDURE
The procedure below should be followed whenever taking measurements
with the HTHS Viscometer. Before meaningful data can be obtained,
however, each of the viscometric cells must be calibrated with the
standards provided (see CALIBRATION chapter). Before calibrating the
HTHS, complete several test measurements with a readily-available oil to
become familiar with the operation of the unit. Frequency of recalibration
is at the user's discretion. Always recalibrate if changing the test tempera-
ture (usually 150°C).
Preliminary checklist
Follow the preliminary checklist below to prepare a sample run for the
HTHS:
1. Open the flow valve on your pressurized nitrogen supply to the
HTHS (an internal ballast tank provides a pressure reservoir for
efficient HTHS operation).
2. Make sure that the waste oil container is in its position at the base of
the HTHS under the viscometer cell exit tubes. Cap the HTHS exit
tubes to prevent oil leakage during the preliminary part of the test.
Satisfactory stoppers are available from CANNON®(Catalog #9726-
N98; package of 12).
CAUTION When removing and replacing stoppers, always use a protective
glove rated for protection at 150°C to prevent burns.
3. Attach the syringe tube (charge cylinder), which will contain
the oil sample, to the Luer fitting on the desired viscometer
cell holder at the top of the HTHS.
4. Turn the Cell Selection switch on the HTHS front panel to
the number of the desired test cell. Pour approximately 5 ml
of sample into the charge cylinder. This quantity of oil
sample will be used to flush any oil remaining from the
previous HTHS sample run.
5. Open the plug valve for the desired viscometer cell by
turning the green plug valve handle counterclockwise to a
vertical position.
6. Place the Syringe Hose Adapter over the top aperture of the
charge cylinder and apply pressure to seal the sponge pad
against the charge cylinder opening (see photo).
Plug valve open with Syringe
Hose Adapter installed

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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®Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
7. Locate the 2-way toggle switch for the Pressure/Vacuum pump on
the left side of the HTHS front panel and flip the toggle upward to
PRES(sure). Then turn the PUMP switch ON to force the rinse oil
sample into the viscometric cell.
8. After the oil has been forced into the cell, close the green plug valve
by moving it to the horizontal position.
NOTE DO NOT PROCEED TO THE NEXT STEP OF THE RUN PROCEDURE
IF THE PLUG VALVE FOR THE TEST CELL IS IN THE OPEN
(HANDLE VERTICAL) POSITION. The HTHS Series II test cycle will not
begin unless the plug valve is closed.
9. Remove the adapter from the charge cylinder.
10. Using the toggle switch, turn the Pressure/Vacuum pump OFF.
11. Using the DECREASE and INCREASE push buttons, adjust the
ballast tank pressure to between 100 and 150 psi.
12. Using a protective glove, carefully remove the stopper from the
HTHS exit tube for the desired cell. Then press the START/STOP
button to force the oil through the capillary. The sample will be
flushed through the cell. An audible hiss indicates that the oil has
been discharged and gas is flowing through the capillary.
13. After the test has been completed, toggle the START/STOP button
on and off for a few seconds to remove as much excess oil from the
cell as possible.
14. Using protective gloves, replace the exit tube stopper. You are now
ready to prepare the sample for HTHS testing.
Soaking the test sample
1. To integrate testing with the software analysis package, load the
High-Shear Viscosity Calculator software and select the desired test
cell by clicking the graphic representation or typing the cell number
in the appropriate field. You can also type the Cell Number in the
appropriate field.
2. Fill the charge cylinder with the test sample to approximately the 10
to 12 ml level. Verify that the Cell Selection switch is turned to the
number of the desired test cell.
3. Open the plug valve by turning the green plug valve handle counter-
clockwise to the vertical position.

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®High-Temperature High-Shear Viscometer Series II Instruction & Operation Manual
Revision 1.0d—June, 2011;
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CANNON
®Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
4. Place the Syringe Hose Adapter over the top aperture of the charge
cylinder and apply pressure to seal the sponge pad against the top of
the charge cylinder (see photo).
5. Ensure that the Pressure/Vacuum switch
on the left side of the HTHS front panel is
set to Pressure. Then turn the Pump
switch ON to introduce sample into the
viscometric cell.
6. Close the plug valve.
7. Let the HTHS oil sample soak in the heated
viscometric cell for at least 15 minutes to
achieve test temperature. You can use the
Equilibrium Timer built into the High-
Shear Viscosity Calculator. From the
interface window, just click on the Equilib-
rium Timer button to start and stop the timer. Enter initial test data
(Cell Number and Sample ID Name) in the High-Shear Viscosity
Calculator software program during this time.
8. Check the cell temperature on the front panel display and verify with
your temperature reference to ensure that the HTHS is controlling at
the desired test temperature.
9. (optional) Input the estimated sample viscosity in the field provided
by the High-Shear Viscosity Calculator. The Calculator will display
the optimum gas pressure for achieving the desired shear rate.
10. Adjust the gas pressure to the level required for test (See ASTM D
5481 sections 9 and 11 for more information). To increase the gas
pressure, press and hold the Increase button. To decrease pressure,
press and hold the Decrease button. Monitor the current gas pres-
sure reading using the HTHS digital pressure display.
NOTE Set the pressure 1.5 to 2 lbs. higher than the desired optimum test
pressure, since the pressure will fall slightly during testing.
11. Wait for the pressure reading to stabilize before proceeding to the
next steps.
Setting sample volume
Before the HTHS test can be run successfully, the volume of oil in the
viscometer tube must be precisely regulated. This is accomplished by
withdrawing excess sample from the cell immediately prior to the test
run.
1. Before adjusting the volume of oil in the cell, recheck the pressure to
ensure that it is still at the desired value. If necessary, adjust the
pressure before proceeding to the next step.
2. Verify that the Cell Selection switch is turned to the number of the
desired test cell. Then open the plug valve for the desired cell by
turning the green plug valve handle to its vertical position.
Introducing sample