Koehler KV3000 Guide

Operation and Instruction Manual
REV C
Koehler Instrument Company, Inc.
1595 Sycamore Avenue • Bohemia, New York 11716-1796 • USA
Toll Free: 1-800-878-9070 (US only) • Tel: [phone] • Fax: [phone]
http://www.koehlerinstrument.com • e-mail: [e-mail]
Petroleum Testing & Analysis Instrumentation • Custom Design & Manufacturing
KV3000
Kinematic Viscosity Bath

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-1-

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-2-

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-3-
CERTIFICATE OF CONFORMANCE
Constant Temperature Kinematic Viscosity Bath, KV3000
K237X0, K237X6
This certificate verifies that part numbers K237X0, K237X6, Constant Temperature
Kinematic Viscosity Bath, were manufactured in conformance with the applicable
standards set forth in this certification.
Specifications: ASTM D445
ASTM D2532
ASTM D6074
ASTM D6158
IP 71
ISO 3104
DIN 51550
FTM 791-305
NF T 60-100
This unit is tested before it leaves the factory, to ensure total functionality and
compliance to the above specifications and ASTM standards. Test and inspection
records are on file for verification.
Jesse Kelly
Application Engineer
Koehler Instrument Company

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-4-

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-5-
WEEE Directive Compliance Statement
Background
The goal of the WEEE Directive is to encourage design of environment-friendly products that increase
reuse, recycling and other forms of recovery to reduce waste streams and applies to listed Electronic and
Electrical Equipment (EEE) and Koehler's equipment falls broadly into Appendix 1A; Section 9 Monitoring
and Control Equipment: Measuring, weighing or adjusting appliances for household or as laboratory
equipment.
Any associated non-embedded equipment such as Lighting (Saybolt Color) and PCs/Printers also fall
under WEEE. If provided with an order these ancillary items must be WEEE compliant. For these and
other reasons (printer cartridges are regionalized) the equipment must be supplied through a third party
supplier in Europe.
The WEEE Directive applies to electrical and electronic equipment falling under the categories set out in
Annex IA provided that the equipment concerned is not part of another type of equipment that does not
fall within the scope of this Directive. Annex IB contains a list of products which fall under the categories
set out in Annex IA.
http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2003:037:0024:0038:en:PDF
We do not qualify for any of the 10 exemption categories.
http://www.dpa-system.dk/en/WEEE/Products/Exemptions
Professional use
For equipment defined for ’professional use’ local authorities have no role to play. Producers and
importers are basically responsible for collection of WEEE recyclables from the professional user and for
subsequent management. A separate statement is given cataloging the items that require separation
from the equipment along with basic information on subsequent processing or recycling prior to disposal
of the equipment.
http://www.dpa-system.dk/en/WEEE/Products/Private-or-professional-use
Responsibility for Registration and Annual Reporting:
Koehler will not sell directly to end users in the EU and so has no responsibility to register within each EU
state and to make annual reports. Koehler declares that this responsibility is born by the importer who is
the first level of the distribution chain and is subject to producer responsibility. We will communicate this
in writing to our distributor/importers in the EU stating they are responsible to satisfy WEEE registration
and reporting requirements in the EU states where they conduct sales activities.
It is illegal to market electrical and electronic equipment covered by producer responsibility without being
registered.
http://www.dpa-system.dk/en/WEEE/Producers/Whoissubjecttoproducerresponsibility
Product Design
Koehler's designs allow for complete disassembly to a modular level which usually allows for standard
recycling. A qualified refrigeration system technician must be consulted when disassembling and de-
commissioning any equipment with refrigeration systems.
Koehler's scientific testing equipment is robustly designed to function over a long service life and are
typically repaired many times over the course of years rather than being replaced. We believe that re-use
and refurbishment is the very best form of re-cycling.
All batteries must be readily removable not soldered in place.
Recycling instructions
In the event that replacement becomes necessary, we will include instructions, particularized to each
instrument that informs the customer of their recycling responsibilities and giving them guidance in doing

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-6-
this. All Koehler equipment has been placed on the market since 13th August 2005 and so Koehler is
defined as a "new WEEE producer". As such we must provide information on refurbishment, treatment,
and re-use.
Our instrument manual will include this compliance statement and indicate that any collection of materials
will be handled by their authorized distributor. In the event that the distributor is unreachable or is no
longer a distributor for Koehler Instrument, Co., other arrangements may be made including accepting the
materials directly.
Recycling is free of charge. Shipping is the responsibility of the end users. Whether shipping to a
distributor or to Koehler directly, safe, properly declared, and labeled packaging and shipping expenses
are the sole responsibility of the end user.
WEEE Marking
Since Koehler products are subject to the WEEE Directive we must display the WEEE symbol shown
above in accordance with European Standard EN 50419 on the equipment. It must be indelible, at least
5mm in height, and clearly legible. If the equipment is too small the mark must be in the product literature,
guarantee certificate, or on the packaging. Rules on marking are established in section 49 of the WEEE
Order.
Koehler Instrument Company, Inc.
c/o RECYCLING
1595 Sycamore, Ave.
Bohemia, NY 11716
As a minimum the following substances, preparations and components have to be removed from any
separately collected WEEE:
- Mercury containing components, such as switches or backlighting lamps (compact fluorescent lamps,
CFL),
- Batteries
- Printed circuit boards if the surface of the printed circuit board is greater than 10 square centimeters
(about 4 sq in.),
- Toner cartridges, liquid and pasty, as well as color toner,
- Chlorofluorocarbons (CFC), hydrochlorofluorocarbons (HCFC) or hydrofluorocarbons (HFC),
hydrocarbons (HC)
- Liquid crystal displays (together with their casing where appropriate) of a surface greater than 100
square centimeters and all those back-lighted with gas discharge lamps,
- External electric cables
- Components containing refractory ceramic fibers as described in Commission Directive 97/69/EC of 5
December 1997 adapting to technical progress Council Directive 67/548/EEC relating to the classification,
packaging and labeling of dangerous substances (2),
- Electrolyte capacitors containing substances of concern (height > 25 mm, diameter > 25 mm or
proportionately similar volume)
2. The following components of WEEE that is separately collected have to be treated as indicated:
- Equipment containing gases that are ozone depleting or have a global warming potential (GWP) above
15, such as those contained in foams and refrigeration circuits: the gases must be properly extracted and
properly treated. Ozone-depleting gases must be treated in accordance with Regulation (EC) No
2037/2000 of the European Parliament and of the Council of 29 June 2000 on substances that deplete
the ozone layer (4).

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-7-
Table of Contents
1Introduction....................................................................................................................9
1.1 Koehler’s Commitment to Our Customers .......................................................................9
1.2 Recommended Resources and Publications...................................................................9
1.3 Instrument Specifications...............................................................................................10
2Safety Information and Warnings ..............................................................................10
3Getting Started.............................................................................................................10
3.1 Packing List....................................................................................................................10
3.2 Unpacking......................................................................................................................10
3.3 Setup..............................................................................................................................12
4Instrument Descriptions .............................................................................................10
4.1 Instrument Controls........................................................................................................12
4.2 Accessories for Running Tests......................................................................................13
4.3 Temperature Controller Operation.................................................................................14
4.4 Recommended Accessories..........................................................................................15
5Operation......................................................................................................................15
5.1 Bath................................................................................................................................15
5.2 Power.............................................................................................................................16
6Safety Features ............................................................................................................17
6.1 Over-Temperature Protection........................................................................................17
6.2 Over-Power Protection ..................................................................................................17
7Maintenance .................................................................................................................17
7.1 Routine Maintenance.....................................................................................................17
7.2 Bath Cleaning ................................................................................................................17
7.3 Draining / Changing Bath Medium.................................................................................18
7.4 Changing Bath Lamp / Bulb...........................................................................................19
7.5 Replacement Parts ........................................................................................................19
8Wiring Diagrams ..........................................................................................................20
8.1 115 V Unit (K23700, K23706) Wiring.............................................................................20
8.2 220-240V Tray Wiring (K23790, K23796) .....................................................................21
8.3 220-240V Top Assembly Wiring (K23790, K23796)......................................................20
9Troubleshooting...........................................................................................................23
9.1 Unit does not power up..................................................................................................23
9.2 Unit is on and keeps resetting into start up routine .......................................................23
9.3 Unit is on but bath does not heat up..............................................................................23

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-8-
9.4 Bath heats up but temperature does not stabilize .........................................................23
10 Service ..........................................................................................................................23
11 Storage..........................................................................................................................23
12 Disposal........................................................................................................................23
13 Warranty .......................................................................................................................24
14 Returned Goods Policy...............................................................................................24
Notes....................................................................................................................................25

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-9-
1 Introduction
The Koehler KV3000 Kinematic Viscosity
System is for performing kinematic viscosity
tests with glass capillary viscometers according
to the ASTM D445 test method and related test
specifications.
This manual provides important information
regarding safety, technical reference, installation
requirements, operating condition specifications,
user facility resource requirements, and
operating instructions for the Kinematic Viscosity
Instrument and Data Acquisition Software. This
manual should also be used in conjunction with
applicable published laboratory procedures.
Information on these procedures is given in
section 1.2.
1.1 Koehler’s Commitment to Our
Customers
Providing quality testing instrumentation and
technical support services for research and
testing laboratories has been our specialty for
more than 50 years. At Koehler, the primary
focus of our business is providing you with the
full support of your laboratory testing needs. Our
products are backed by our staff of technically
knowledgeable, trained specialists who are
experienced in both petroleum products testing
and instrument service to better understand your
requirements and provide you with the best
solutions. You can depend on Koehler for a full
range of accurate and reliable instrumentation
as well as support for your laboratory testing
programs. Please do not hesitate to contact us
at any time with your inquiries about equipment,
tests, or technical support.
Toll Free: 1-800-878-9070 (US only)
Tel: [phone] • Fax: [phone]
Email: [e-mail] •
http://www.koehlerinstrument.com
1.2 Recommended Resources and
Publications
1. American Society for Testing and
Materials (ASTM)
100 Barr Harbor Drive
West Conshohocken, Pennsylvania
19428-2959, USA
Tel: [phone]
Fax: [phone]
http://www.astm.org
email: [e-mail]
ASTM Publication:
ASTM D445: Kinematic Viscosity of
Transparent and Opaque Liquids (and the
Calculation of Dynamic Viscosity)
ASTM D2170: Kinematic Viscosity of
Asphalts (Bitumens)
ASTM D6074: Standard Guide for
Characterizing Hydrocarbon Lubricant
Base Oils
ASTM D6158: Standard Specification for
Mineral Hydraulic Oils
2. International Organization for
Standardization (ISO)
1, rue de Varembé
Case postale 56
CH-1211 Geneva 20, Switzerland
Tel: [phone]
Fax: [phone]
http://www.iso.org
ISO Publication:
ISO 3104: Petroleum products –
Transparent and opaque liquids –
Determination of kinematic viscosity
and calculation of dynamic viscosity
3. Energy Institute (IP)
61 New Cavendish Street
London, WIM 8AR, United Kingdom
Tel: [phone]
Fax: [phone]
http://www.energyinstpubs.org.uk/
IP Publication:
IP 71: Kinematic viscosity and calculation
of dynamic viscosity
IP 319: Kinematic viscosity of bitumens
4. Deutsche International Norm (DIN)
http://www.din.de
DIN Publication:
DIN 51550: Determination of Kinematic
Viscosity and Dynamic Viscosity
5. Federal Test Method (FTM)
FTM Publication:
FTM 791-305: Kinematic Viscosity of
Petroleum Products
6. Association Française de Normalisation
(AFNOR)
http://www.afnor.fr

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-10-
AFNOR Publication:
NF T 60-100: Kinematic Viscosity of
Petroleum Products
1.3 Instrument Specifications
Models:
K23700, K23790,
K23706, K23796
Electrical
Requirements:
115V ±10% 60 Hz
220-240V ±10%
50/60 Hz
Temperature
Range:
15 -150°C (302°F)
Temperature
Control Stability:
Exceeds ASTM
Standards
Viscometer Ports:
Seven (7) Round 2”
(51mm) ports
Capacity:
Seven (7) Glass
Capillary Viscometers
Bath Medium:
Water or suitable heat
transfer fluid
Bath Medium
Capacity:
22L (5.8 gal) or 34 L
(8.9 gal)
Altitude:
Rated for use below
2000m
Environmental
Conditions:
As per section 1.4.1
of IEC 61010
2 Safety Information and Warnings
Safety Considerations. The use of this
equipment may involve hazardous materials and
operations. This manual does not purport to
address all of the safety problems associated
with the use of this equipment. It is the
responsibility of any user of this equipment to
investigate, research, and establish appropriate
safety and health practices and determine the
applicability of regulatory limitations prior to use.
Equipment Modifications and Replacement
Parts. Any modification or alteration of this
equipment from that of factory specifications is
NOT recommended and will void the
manufacturer warranty, product safety,
performance specifications, and/or certifications
whether specified or implied, and may result in
personal injury and/or property loss.
Replacement parts must be O.E.M. exact
replacement equipment.
Unit Design. This equipment is specifically
designed for use in accordance with the
applicable standard test methods listed in
section 1.2 of this manual. The use of this
equipment in accordance with any other test
procedures, or for any other purpose, is not
recommended and may be extremely
hazardous.
Over Temperature Protection. This unit is
equipped with Over Temperature Protection
(OTP) circuitry to prevent overheating. The unit
will automatically interrupt power whether
equipment malfunction or operator error causes
the temperature to exceed either 20 °C above
the set point or the maximum recommended
temperature range. The power can only then be
restored by identifying and correcting the
problem, allowing the unit to return to normal
operating temperatures, and resetting the power
to the unit.
Chemical Reagents Information. Chemicals
and reagents used in performing the test may
exhibit potential hazards. Any user must be
familiarized with the possible dangers before
use. We also recommend consulting the
Material Data and Safety Sheet (MSDS) on each
chemical reagent for additional information.
MSDS information can be easily located on the
internet at http://siri.uvm.edu or
http://www.sigma-aldrich.com.
3 Getting Started
The instructions for preparing the equipment
assume that the user is aware of the contents of
this document, which lists the warranty
conditions and important precautions.
3.1 Packing List
KV3000 Digital Constant-Temperature
Kinematic Viscosity Bath
Round Viscometer Port Cover (7)
KV3000-Manual KV3000 Kinematic
Viscosity Bath Operation and Instruction
Manual
3.2 Unpacking
1. Check Shock Watch Label on Cardboard
Box for indication of rough handling and
possible damage.

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-11-
2. Check labeling for correct orientation of
instrument. (e.g. This Side Up)
3. Carefully open top of box with box cutter and
remove packing foam.
4. Look inside bath from top of box, to verify
that the Glass Bath Jar is in tact.
5. Make two additional vertical cuts, using box
cutter, along length of two sides of the box
and remove packing foam.
6. Extract instrument and place on suitable cart
for transportation to work area / lab bench.
WARNING: Be sure two or more
individuals are available for extracting and lifting
instrument from box to cart and from cart to
bench. Individuals must lift in accordance to
proper technique. See Figure below.
7. Lift instrument from cart and place on bench.
8. Remove foam insert Borosilicate Glass Jar
as per steps 9 thru 19.
9. Using a flat head screwdriver, remove the
four (4) silver screws located at the four
corners of the back panel.
10. Remove the back panel plate and set aside.
11. A collection of wires runs from the lower
control panel up the left side, while looking
at the back of the bath. Halfway up the
wiring are three points where the wires can
be disconnected. See Figure below:
12. There are a total of three joints to
disconnect. First disconnect the single large
cluster of wires by pressing in the sides of
the lower plastic piece then pulling the top
plastic piece.
13. Then disconnect the two smaller joints. Each
side of the joint is labeled with an identical
number one (1) or number two (2). This
makes for easy connection when re-
assembling the instrument.
14. Once the wiring is completely disassembled
it is safe to remove the top assembly of the
bath.
15. Remove the six (6) screws lining the two
sides of the top assembly with a Philips
head screw driver.
16. Make sure there is sufficient space with
cleaning clothes to place the top assembly
when lifted off the bath.
17. Lift the top assembly with one hand on the
back side and one hand on the front side of
the top assembly. Place top plate assembly
on flat surface with the back side of the top
plate assembly and the heating coils on the
surface.
18. With the top plate assembly now removed
from the main instrument it is now easy to
access the bath jar to remove the protective
foam insert.
19. Re-assemble the instrument
20. Ensure that all parts listed on the packing list
are present. Inspect the unit and all
accessories for damage. If any damage is
found, keep all packing materials and
immediately report the damage to the
carrier. We will assist you with your claim, if
requested. When submitting a claim for
shipping damage, request that the carrier
inspect the shipping container and
equipment. Do not return goods to Koehler
without written authorization.

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-12-
3.3 Setup
Equipment Placement: Make sure the
instrument in placed on a firm, level table in an
area with adequate ventilation or in a hood. The
unit may be leveled by making minor turning
adjustments to the feet located at the base of
the unit. Please note that Koehler does not
supply a level with this equipment.
WARNING: Certain mechanical stresses
applied to the tempered glass front panel and
inner the inner borosilicate glass jar pose a
hazard to personnel. Impacts to these during
normal operation can shatter the glass
components releasing the bath fluid posing
thermal burn hazards and slipping hazards. For
this reason the instrument must be operated by
and accessible only to trained and authorized
personnel and located in an area where this type
of impact is likely to occur.
Environmental Conditions: The instrument
environment must comply with the following
conditions for proper setup:
No / Low Dust
No direct sunlight
Not near heating or AC ventilation ducts
No Vibrations
Clearance from other instruments
Temperature Range: 5 to 40°C
Elevation to 2000 meters
Relative Humidity: < 80%
Ventilation. A fume hood or exhaust system is
required when operating the unit. Flammable
vapors and/or steam are generated during
operation and must not be permitted to
accumulate. A canopy-style hood may be used if
the height from the top of the unit to the canopy
is 5 feet or less. The exhaust blower should
have a rating of 1000 C.F.M. or greater.
Power: Connect the line cords to properly fused
and grounded receptacles with the correct
voltage as indicated in section 1.3 or on the
back of the unit.
WARNING: For safety, disconnect the
power when performing any maintenance and/or
cleaning. Do NOT turn the power on unless the
bath is filled with the proper medium; otherwise,
damage may occur to the unit and the warranty
will be void.
4 Descriptions
4.1 Instrument Controls
Figure 1: Instrument Descriptions
1. Power Switch. This switch controls the
power to the entire unit. When the
power switch is in the ON position, the
digital temperature controller, and the
stirrer are powered on.
2. Lamp Switch. This switch controls
turning ON/OFF the lamp for illuminating
the test samples.
3. Temperature Controller. The
temperature controller regulates the
bath temperature for the test procedure.
Refer to Section 4.3 for full operational
details.
4. Temperature Regulation: The heater
coils stabilize the bath temperature to
desired setting within ± 0.02°C. Running
coolant through the cooling coils allows
bath to maintain temperatures near or
below ambient.
5. Thermometer/Thermocouple Port:
This port allows for independent
temperature measurement of the bath
temperature with a thermometer or a Pt-
100 RTD probe for precise temperature
measurements and digital temperature

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-13-
controller calibration. If the controller
needs to be calibrated, then please
contact the Koehler technical service
department.
6. Viscometer Ports: The viscometer,
once engaged into the assembly, is
placed into the bath through the
viscometer ports on top of the
instrument.
7. Bath/ Bath Stirrer: The stirrer
constantly circulates bath medium to
prevent temperature gradients and
ensures temperature stability. When
cleaning and/or servicing, please be
sure to disconnect unit power to avoid
possible injury.
8. LCD Timer Display: Displays time of
fluid flow through viscometers and is
manually controlled by the operator.
Time is recorded in seconds to one
decimal place.
9. Timer Start/Stop: Depressing this
button starts or stops the manual timer
operation.
10. Timer Reset: Depressing this button
resets timer to zero (0.0) whether the
timer is in operation or stopped.
4.2 Accessories for Running Tests
Glass Capillary Viscometer Tubes for
KV3000
Koehler offers a full selection of glass capillary
kinematic viscometers, which are ordered
separately from the KV3000 instrument, for
measuring kinematic viscosity of liquid products
as per ASTM D445 and related standard test
methods. All types of viscometers conform to
ASTM D445 and related methods for glass
capillary kinematic viscometers. All viscometers
with part numbers for the automatic test are
listed below. The constant for each individual
viscometer is written on the Certificate of
Calibration, included in the packaging.
IMPORTANT: It is recommended when using a
new viscometer for the first time to run a test
with suitable standard. Different locations may
result in a slightly different constant.
Cannon®-Fenske Routine Viscometers
The Cannon®-Fenske Routine viscometer is a
rugged and inexpensive viscometer that works
well if the sample is transparent or translucent.
For kinematic viscosity of transparent liquids
up to 20,000cSt.
Requires a sample of approximately 7mL.
Cannon®-Fenske Opaque Reverse Flow
Viscometers
The reverse flow viscometers are designed for
testing opaque liquids. These viscometers wet
the timing section of the viscometer capillary
only during the actual measurement and must
be cleaned, dried and refilled before a repeat
measurement can be made. By contrast, other
viscometer types commonly used to measure
transparent liquids allow the sample to be
repeatedly drawn up into the capillary, permitting
duplicate measurements.
For measurement of transparent and dark
liquids having kinematic viscosities of up to
20,000cSt
Requires a sample of approx 12mL.
Can be used for viscosities of asphalts by
ASTM D2170 method.
Catalog No.
Size
Approximate
Constant,
cSt/s
Kinematic Viscosity
Range, cSt
378-025-C02
25
0.002
0.4 to 2
378-050-C02
50
0.004
0.8 to 4
378-075-C02
75
0.008
1.6 to 8
378-100-C02
100
0.015
3 to 15
378-150-C02
150
0.035
7 to 35
378-200-C02
200
0.1
20 to 100
Catalog No.
Size
Approximate
Constant,
cSt/s
Kinematic Viscosity
Range, cSt
378-025-C01
25
0.002
0.5 to 2
378-050-C01
50
0.004
0.8 to 4
378-075-C01
75
0.008
1.6 to 8
378-100-C01
100
0.015
3 to 15
378-150-C01
150
0.035
7 to 35
378-200-C01
200
0.1
20 to 100
378-300-C01
300
0.25
50 to 250
378-350-C01
350
0.5
100 to 500
378-400-C01
400
1.2
240 to 1,200
378-450-C01
450
2.5
500 to 2,500
378-500-C01
500
8
1,600 to 8,000
378-600-C01
600
20
4,000 to 20,000
378-650-C01
650
45
9,000 to 45,000
378-700-C01
700
100
20,000 to 100,000

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-14-
378-300-C02
300
0.25
50 to 250
378-350-C02
350
0.5
100 to 500
378-400-C02
400
1.2
240 to 1,200
378-450-C02
450
2.5
500 to 2,500
378-500-C02
500
8
1,600 to 8,000
378-600-C02
600
20
4,000 to 20,000
378-650-C02
650
45
9,000 to 45,000
378-700-C02
700
100
20,000 to 100,000
Ubbelohde
Ubbelohde viscometers measure transparent
liquids, and unlike the Cannon®-Fenske Routine
viscometers, they maintain the same viscometer
constant at all temperatures. This is
advantageous when samples are to be
measured at different temperatures.
Suspended-level type viscometers are for
transparent liquids of up to 100,000cSt
Requires a sample volume of approx 11mL.
Catalog No.
Size
Approximate
Constant,
cSt/s
Kinematic Viscosity
Range, cSt
378-000-C03
0
0.001
0.3 to 1
378-00C-C03
0C
0.003
0.6 to 3
378-00B-C03
0B
0.005
1 to 5
378-001-C03
1
0.01
2 to 10
378-01C-C03
1C
0.03
6 to 30
378-01B-C03
1B
0.05
10 to 50
378-002-C03
2
0.1
20 to 100
378-02C-C03
2C
0.3
60 to 300
378-02B-C03
2B
0.5
100 to 500
378-003-C03
3
1
200 to 1,000
378-03C-C03
3C
3
600 to 3,000
378-03B-C03
3B
5
1,000 to 5,000
378-004-C03
4
10
2,000 to 10,000
378-04C-C03
4C
30
6,000 to 30,000
378-04B-C03
4B
50
10,000 to 50,000
378-005-C03
5
100
20,000 to 100,000
Viscometer Holders
Koehler offers viscometer holders for use with
the KV3000. The correct holder must be used
with the corresponding viscometer tube for
proper operation. Corresponding Viscometer
Tube holders are listed below.
Viscometer Tube Type
Corresponding
Holder
Cannon®-Fenske Routine
K23381
Cannon®-Fenske Opaque
Reverse Flow
K23381
Ubbelohde
K23382
4.3 Temperature Controller Operation
Figure 4. Temperature Controller
1. Process Temperature Display. The
upper red LED display shows the
process temperature as read from the
RTD probe.
2. Set Point Temperature Display. The
lower green LED display shows the set
point temperature of the controller.
3. Programming Key. Permits scrolling
through controller menu parameters.
One Level Forward
4. Down Key. Used to decrease the set
point temperature and to decrease or
change parameter values when
programming the temperature controller.
5. Up Key. Used to increase the set point
temperature and to increase or change
parameter values when programming
the temperature controller.
6. Exit / Function Key. This key is used to
exit or leave a level. One level backward
IMPORTANT NOTE: The digital
temperature controller for the unit
comes pre-programmed from the

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-15-
Koehler factory. Please do NOT attempt
to re-program the digital temperature
controller as this will void the product
warranty. If assistance is required,
please do not hesitate to contact the
Koehler technical service department.
Setting the Temperature. Set the desired
operating temperature by adjusting the set
point with the up and down keys. The set
point will be displayed in the lower green Set
Point LED display and the actual
temperature will be displayed in the upper
red Process LED display. Please allow the
instrument to fully equilibrate before
proceeding with any testing.
Temperature Calibration. This routine allows
the digital temperature controller to be
calibrated to a certified thermometer. In the
calibration mode, the display will always give
2 decimal places.
a. Use a certified calibrated measuring
device to acquire the temperature.
Calculate the difference between the
measuring device and the Process
value displayed on the controller.
b. Press the program key two times until
PCt is displayed in the lower green LED
display. Press the DOWN key. CAL will
display on the lower green display. If
there is a value observed in the upper
red LED display, add it to the calculated
difference obtained in the previous step.
This is the offset value.
c. Press the Program Key. The lower
green display will flash. Use the up or
down keys to adjust to the new
calibration offset value on the upper red
display calculated in the previous step.
When the value has been entered, the
controller will automatically store the
value. The lower green display will stop
flashing. If further adjustments are
necessary, press the Program Key
again. Resume regular operations by
pressing the Exit / Function key two
times. Verify if the new calibration is
correct by observing the upper red
display and comparing the value with
the calibrated reference device.
Auto Tune. This routine allows the digital
temperature control to learn the heating
parameters needed for any particular set
point temperature. This operation should be
done when installing a new unit, after
replacing or changing the bath medium type,
or utilizing a different temperature set point
20% different from the previously used set
point temperature.
a. Set the operating temperature to the
desired setting.
b. Press the up and down arrow buttons
simultaneously for about 5 seconds.
When Auto Tune is active, the lower
green LED display will blink TUNE. Auto
Tune will automatically toggle off when
the set point temperature is reached.
Auto tune can be terminated by pressing
the up & down buttons simultaneously
again.
4.4 Recommended Accessories
Withdrawal Bulb. Use to pull sample into
viscometer tube.
Part number: K22090
Rubber Stopper. Use to hold sample in
viscometer tube.
Part number: K23311
Operation near or below ambient
temperatures. A water supply or external
chiller may be used to maintain the
temperature of the bath for cooler
temperature. Hose-barb connections for
water or refrigerated coolant are located at
the top of the bath. There are two
connections: inlet and outlet. The hose
connections can be secured with copper
wire to prevent the tubing from disengaging
from the connection.
5 Operation
5.1 Bath
Fill the bath with the appropriate heat transfer
fluid based upon the testing temperature. Fill the
bath with the medium from the top through one
of the seven port openings using a wide neck
funnel with a 500mL griffin beaker adding about
½ L at a time to 2" (5 cm) from the top of the
bath to allow room for fluid expansion. This will
provide the proper depth for immersing the
viscometers and allow for thermal expansion.

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-16-
NOTE: Do not attempt moving the bath
when filled with fluid medium. Drain all fluid
before moving or relocating the instrument. See
section 7.2 of this document. Sudden starting
and stopping could result in hot bath fluid being
forcefully ejected from the bath. It could also
result in overbalancing and tipping over the
instrument.
NOTE: Do not drain the bath until the fluid is at
ambient temperature.
Testing
Temperature
Recommended Fluid
15 - 50°C*
Distilled water will be suitable.
50 - 95°C
Koehler supplies highly
refined white technical oil
(part # 355-001-001) that
contains an oxidation inhibitor
to limit clouding at higher
temperatures.
CAS# 8042-47-5
Minimum Flash Point: 120°C
(248°F)
Fire Point: 202°C (395°F)
95 - 150°C
Koehler supplies a clear
silicone heat transfer fluid
(part # 355-001-002) with high
oxidation resistance and low
volatility. CAS # 63148-62-9.
Minimum Flash Point: 200°C
(392°F).
NOTE: Do not use bath fluids that will
decompose or volatilize producing flammable
vapors below the maximum instrument operating
temperature +25°C.
NOTE: Coloration of the Mineral or Silicon Bath
Oil is an indication that the Medium must be
changed. See Draining instructions in section
7.3 of this document. When a decision is made
to discard this material, dispose of this material
and its container to a hazardous of special
waste collection point. Country, State, or local
laws may impose additional regulatory
requirements regarding disposal. Dispose in
accordance to all applicable regulations.
WARNING: Bath oils contaminated with
light ends can pose a flammability hazard.
5.2 Power
Turn on the main power switch to the unit.
WARNING: Do NOT turn the power on
unless the bath is filled with the proper medium;
otherwise, damage may occur to the unit and
the warranty would be void.
5.3 Starting a Test
Before running a test, make sure the unit is
level. Otherwise, the results will be affected.
1. Insert the Pt-100 RTD probe into the holder
provided at the top of the bath. Insert the
RTD connector into the receptacle located
on the rear panel
2. Install the appropriate ASTM thermometer in
the cover plate of the bath using the holder
provided.
3. Set the desired operation temperature using
the temperature control (See Section 4.3).
4. Install viscometer into its viscometer holder.
Carefully slide the holder onto the top of the
tube:
Figure 3
Charge the viscometer with sample and
carefully lower into the bath through the
viscometer ports.
WARNING: Do not test or run materials
that boil or exhibit high vapor pressure at the
bath test temperature.

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-17-
IMPORTANT: Allow the bath AND the sample
enough time to reach the temperature before
starting measurements. Allow 10-15 minutes
for the bath to equilibrate. Do not add medium
to the bath while a test is being performed.
Additional medium will disrupt the temperature
equilibrium of the bath and cause erroneous
test results.
6 Safety Features
The Koehler KV3000 Kinematic Viscosity
System is equipped with several safety and
protection features, which are described in the
following sections.
WARNING: The bath is NOT Explosion
Proof.
6.1 Over-Temperature Protection
The Koehler KV3000 Kinematic Viscosity
System is equipped with Over-temperature
Protection (OTP) circuitry, which prevents the
unit from exceeding unsafe operating
temperatures. If the unit cannot maintain the set
point temperature and begins to decline, the
OTP circuitry may have been activated. Please
follow these steps.
1. Turn off the unit power switch and
disconnect the line cord.
2. Determine the source of the problem and
correct the situation.
3. Restart the unit. Monitor the operations to
ensure that the unit is operating properly. If
you are still experiencing trouble, please
contact Koehler technical service for
assistance.
6.2 Over-Power Protection
The Koehler KV3000 Kinematic Viscosity
System is equipped with Over-power Protection
circuitry, which prevents the unit from unsafe
electrical conditions. If power to the unit is lost,
then turn off the main power and turn it back on
again. The main power switch also functions as
a circuit breaker.
7 Maintenance
WARNING: Disconnect power to the unit
before servicing and accessing any internal
portion of the instrument to avoid exposure to
high voltages and/or temperatures which may
result in personal injury or death. If you have any
questions about maintaining your equipment,
then please do not hesitate to contact the
Koehler technical service department.
7.1 Routine Maintenance
The KV3000 Kinematic Viscosity System
requires little routine maintenance to provide
many years of continuous service. However,
over the course of time, some instrument parts
may need to be replaced. When ordering
replacement part(s), please provide the model
number, serial number, and product shipment
date of your equipment so that we can ensure
you will receive the proper replacement part(s).
7.2 Bath Cleaning
To clean the instrument’s exterior, which
includes all painted surfaces and glass,
either a solution of soap and water or
laboratory grade detergent may be used.
Apply cleaner to clean wipe or cloth, not to
the instrument directly. Wipe surface clean.
Do Not clean bath exterior with organic
chemicals such as Acetone, Toluene,
Hexane, etc.
For more difficult cleaning of finished
surfaces, a dilute solution or isopropanol in
water may be used.
It is not recommended that more aggressive
solvents be used on painted surfaces since
paint color will tarnish or be stripped from
the instrument.
Stainless Steel surfaces, such as on the top
plate, may be cleaned using a more
aggressive solvent such as a stainless steel
cleaner.
Glass surfaces may be cleaned using a
more aggressive solvent such as acetone, if
necessary.
SHOCK AND BURN HAZARD: Only
clean inside the bath when equipment is de-
energized and unplugged from the mains power
supply. Allow adequate time for heating coils to
completely cool before cleaning.

KV3000 Kinematic Viscosity Bath
Operation and Instruction Manual
KV3000-Manual
-18-
7.3 Draining / Changing Bath Medium
WARNING: Do not begin draining the bath
medium until it has reached ambient
temperature.
NOTE: When a decision is made to discard this
material, dispose of this material and its
container to a hazardous of special waste
collection point. Country, State, or local laws
may impose additional regulatory requirements
regarding disposal. Dispose in accordance to all
applicable regulations.
1. Remove one of the seven port covers from
the top plate of the bath.
2. Insert a siphoning tube into the port opening
and lower tube to bottom of glass bath jar.
3. Apply a reduced pressure to the opposite
end of the tube with a pump or withdrawal
bulb.
NOTE: Be sure the discharging end of the
tube is below the surface of the bath
reservoir.
4. Remove the withdrawal bulb or suction
pump from the end of the tube and allow the
bath medium to drain into a lower reservoir
or receptacle.
5. Once the bath fluid is drained from the bath,
it is time to remove the complete top
assembly of the bath.
6. Using a flat head screwdriver, remove the
four (4) silver screws located at the four
corners of the back panel.
7. Remove the back panel plate and set aside.
8. A collection of wires runs from the lower
control panel up the left side, while looking
at the back of the bath. Halfway up the
wiring are three points where the wires can
be disconnected. See Figure 4 below:
Figure 4. Wiring Disconnection Point
9. There are a total of three joints to
disconnect. First disconnect the single large
cluster of wires by pressing in the sides of
the lower plastic piece then pulling the top
plastic piece.
10. Then disconnect the two smaller joints. Each
side of the joint is labeled with an identical
number one (1) or number two (2). This
makes for easy connection when re-
assembling the instrument.
11. Once the wiring is completely disassembled
it is safe to remove the top assembly of the
bath.
12. Remove the six screws lining the two sides
of the top assembly with a Philips head
screw driver.
13. Make sure there is sufficient space with
cleaning clothes to place the top assembly
when lifted off the bath.
14. Lift the top assembly with one hand on the
back side and one hand on the front side of
the top assembly. Place top plate assembly
on flat surface with the back side of the top
plate assembly and the heating coils on the
surface.
15. With the top plate assembly now removed
from the main instrument it is now easy to
access the inside of the bath jar for further
cleaning.
16. With the top assembly resting on its back, it
is now possible to clean the heating coils,
stirrer blade and rod and other components
that have been in contact with the bath
medium during operation.