Koehler K34710 Guide

Operation and Instruction Manual
REV A
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
Brookfield Viscosity Liquid Bath
K34710, K34711, K34712

CERTIFICATE OF CONFORMANCE
Low Temperature Brookfield Viscosity Bath, BVS3000
K34710, K34711, K34712
This certificate verifies that part numbers K34710, K34711, K34712 Low
Temperature Brookfield Viscosity Bath, were manufactured in conformance
with the applicable standards set forth in this certification.
Specifications: ASTM D2983
IP 267 Method A
ISO 9262
CEC-L-18A
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

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Operation and Instruction Manual
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Table of Contents
1Introduction.........................................................................................2
1.1 Koehler’s Commitment to Our Customers .............................................................2
1.2 Recommended Resources and Publications.........................................................2
1.3 Instrument Specifications.......................................................................................3
2Safety Information and Warnings......................................................3
3Unpacking & Installation ....................................................................4
3.1 Packing List............................................................................................................4
3.2 Unpacking ..............................................................................................................4
3.3 Instrument Installation............................................................................................4
4Instrument Descriptions.....................................................................5
4.1 Temperature Controller Operation.........................................................................6
5Operation.............................................................................................7
5.1 Viscosity Bath.........................................................................................................7
5.2 Testing Procedure..................................................................................................7
6Safety Features ...................................................................................7
6.1 Over Power Protection...........................................................................................7
7Maintenance ........................................................................................7
7.1 Routine Maintenance.............................................................................................7
7.2 Replacement Parts.................................................................................................7
8Service .................................................................................................8
9Storage.................................................................................................8
10 Warranty...............................................................................................8
11 Returned Goods Policy.......................................................................8

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Operation and Instruction Manual
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1 Introduction
Viscosity is of primary importance in the
development and testing of a wide range of
petroleum products. The K34710 / K34711 /
K34712 Brookfield Viscosity Liquid Bath is the
latest design for performing the sample cooling
profile of the air chamber test method as
specified in section 6.8.2 of the ASTM D2983
test method for low temperature viscosity tests.
The liquid bath permits soaking and testing of
Brookfield viscosity lubricant samples in a single
bath, eliminating the need for a separate air bath
and the risk of sample temperature rise during
testing. The viscosity measurement is done
directly in the test bath after 16 hours of sample
conditioning. Measuring sample viscosity while
still in the liquid bath is specifically allowed by
section 6.8.2 of ASTM D2983.
A mechanically refrigerated cascade system
cools the test bath, and a digital PID controller
regulates the bath temperature and cooling
profiles. Multiple profiles can be stored in the
controller. The following test profiles can be
stored in the controller. The following test
profiles are programmed at the factory: -10, -12,
-17.6, -18, -20, -23.3, -25, -26, -29, -30, -34, -35,
-40°C.
This manual provides important information
regarding safety, technical reference, installation
requirements, operating condition specifications,
user facility resource requirements, and
operating instructions. In addition, this manual
should be used in conjunction with applicable
published laboratory procedures. Information on
these procedures is given below 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 D2983 (Note 1 and Appendix
X3): Low Temperature Viscosity of
Automatic Fluid Lubricants Measured by
Brookfield Viscometer
2. Energy Institute (IP)
61 New Cavendish Street
London, WIM 8AR, United Kingdom
Tel: [phone]
Fax: [phone]
http://www.energyinstpubs.org.uk/
IP Publication:
IP 267: Determination of Low
Temperature Viscosity Automotive
Fluids- Brookfield Viscometer Method
3. International Organization for
Standardization (ISO)
1, rue de Varembè
Casa postale 56
CH-1211 Geneva 20, Switzerland
Tel : [phone]
Fax: [phone]
http://www.iso.ch
Email: [email protected]
ISO Publication
ISO 2962

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1.3 Instrument Specifications
Model:
K34710
K34711
K34712
Electrical
Requirements:
115V 60Hz
220-240V 50Hz
220-240V 60Hz
Testing Capacity:
Ten (10) Samples
Port Type:
Round
Bath Medium:
Dry Denatured Ethanol
Temperature
Range:
Ambient to -55°C (-67°F)
Temperature
Control Stability:
±0.05°C (±0.09°F)
Dimensions:
(l x w x h,in.(cm))
34.25 x 27 x 26
(87 x 69 x 66)
Net Weight:
340 lbs (154 kg)
Shipping
Dimensions:
41.5 Cu. ft.
Shipping Weight
415lbs (188kg)
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, voids 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 the operator’s 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.
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.
Dry Denatured Ethanol:
WARNING:Flammable Liquid
Keep away from heat, sparks open flames
and other open sources of ignition
Do not smoke
Keep container closed
Use with proper ventilation preferably in a
hood
Irritant: may cause irritation and transient
injury; may also cause irritation to skin,
digestive system, and respiratory tact
Avoid inhalation of vapors

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3 Unpacking & Installation
The instruction for preparing this equipment
assumes that the user is aware of the contents
of this document, which lists the warranty
conditions and important precautions.
3.1 Packing List
K34710 / K34711 / K34712 BVS3000
Brookfield Viscosity Liquid Bath System
Insulating Cover
Viscometer Mounting / Leveling Assembly
Accessories (Must be purchased separately)
Brookfield Low Viscosity Rotational
Viscometer
K34750 Brookfield Digital 115V, 60Hz
K34751 Brookfield Digital 220-240V
50Hz
K34752 Brookfield Digital 220-240V,
60Hz
K34760 Brookfield Programmable 115V
60Hz
K34761 Brookfield Programmable 220-
240V 50Hz
K34763 Brookfield Programmable 220-
240V 60Hz
K34706 Insulated Spindle No. 4B2
K447-SP-L4 L4 Spindle (Non-insulated)
K2893-2 Cell Stopper (For K34706 Only)
K34707 Cell Stopper
K34779 Spindle Support Clips
K34709 Test Cell - Round Bottom (pk/12)
K34770 Test Cell - Flat Bottom (pk/12)
250-000-122C ASTM 122C/IP94C
Thermometer
Range: -45 to -35°C
250-000-123C ASTM 123C/IP95C
Thermometer
Range: 35 to -25°C
250-000-124C ASTM 124C/IP96C
Thermometer
Range: -25 to -15°C
250-000-125C ASTM 125C/IP97C
Thermometer
Range: -15 to -5°C
355-005-027 Viscosity Standard N27B
Viscosities in cP at -40, -30, -20, -15, -10
and 0°F
355-005-115 Viscosity Standard
Viscosities in cP at -20, -15, -10, 0, +10 and
+20°F
3.2 Unpacking
Carefully unpack and place the instrument and
accessories in a secure location. Use extra care
while unpacking the Borosilicate glass cylinders.
Ensure that all parts listed in the previous
section are present. Inspect the unit and all
accessories for damage. If you find any damage,
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.
3.3 Instrument Installation
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.
Equipment Placement and Ventilation: Place
that bath on a firm, level table in an area with
adequate ventilation and environmental control.
The room temperature should not exceed 25°C
(77 °F). Please allow at least 12’’ (30cm) of
open space around each side of the unit in order
for the refrigeration system to work properly.
The unit may be leveled by making minor turning
adjustments to the feet located at the base of
the unit.
Leveling: For proper operation, the unit should
be leveled. The use of a spirit level will ensure
proper adjustment. To adjust the leveling feet,
use a 13mm open end wrench to loosen the
locknut (upper nut). Adjust the leveling feet
(lower nut) with a 13 mm wrench. When level,
tighten the lock nut.
Filling the Bath: The bath should be filled with
moisture-free 200 proof ethanol. Please refer to
sections 6.1 and 6.2 for filling and operation
instructions.
Mounting the Brookfield Viscometer: Attach
the threaded support rod to the support bridge
with the supplied bolt and washer. The threads
should face the back of the unit. Loosen the
screw at the back of the rack and pinion on the
Brookfield Viscometer, and then mount the
viscometer onto the support rod. Tighten the
screw and then adjust the height of the
viscometer using the right thumb screw.

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Leveling the Brookfield Viscometer: It is
essential that the viscometer be level for proper
operation. A level is located at the top of the
viscometer. Loosening the left thumb screw
allows the viscometer to be leveled, or the use
of the leveling feet attached to the stand. Be
sure to re-tighten the left thumb screw in order to
secure the viscometer.
Power: Connect the line cords for both the
Digital Programmable Brookfield Viscosity Liquid
Bath (K34715/K34716) and the Koehler or
Brookfield Rotational Viscometer (please see
section 3.1 for part numbers) to a properly fused
and grounded receptacle with the correct
voltage as indicated in section 3 or on the
information plate at the back of the unit.
NOTE: It is important that the electrical
power supply note vary more than 10% of the
apparatus specified voltage. The unit will not
function properly and/or may be damaged.
WARNING: For user safety, please
disconnect the line cords whenever performing
any maintenance operations and/or cleaning of
the unit.
WARNING: Do NOT turn the power on
unless the bath is filled with the proper medium.
Low liquid level exposes the heater which may
ignite the vapors above the fluid of the test bath.
Damage may occur to the unit and the warranty
would be void.
4 Instrument Descriptions
Figure 1. Instrument Descriptions
1. Line Switch: This switch controls the power
to the entire unit. When the Line Switch is in
the ON position, the digital temperature
display is on and the bath back light is on.
2. Motor Switch: This switch controls the
power to the motor and can be turned on
only if the Line Switch is ON.
3. Programmable Temperature Controller:
This unit allows for full temperature and
profile control of the bath (please refer to
sections 4.1 and 4.2 below)
4. Rotational Viscometer: Mounts on
programmable liquid bath for direct
measurement of test samples in cooling
medium.
5. Height Adjustment Knob: Turn knob to
raise and lower Rotational Viscometer
between test and change positions.
6. Mounting Rod: Mounts direct to support
bridge.
7. Level Adjustment Knobs: Turn knobs to
properly level viscometer for testing.

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4.1 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
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.

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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.
5 Operation
5.1 Viscosity Bath
The viscosity bath can maintain temperatures of
ambient to -55°C (-67°F)within ±0.05°C (0.09°F).
1. Fill the bath either with moisture moisture-
free and pure ethanol ¼ to ½ ‘’ from the top
of the bath. This will provide the proper
depth for immersing the test cells
2. Turn ON the line and motor switches
3. Proceed with performing the desired
Brookfield Viscosity tests according the
following standard test methods:
ASTM D2983, IP 267, ISO 2962
5.2 Testing Procedure
Proceed with performing the desired Brookfield
viscosity tests in accordance to the desired
standard test method.
6 Safety Features
The Koehler Programmable Liquid Bath
equipped with several safety and protection
features, which are described in the following
sections.
6.1 Over Power Protection
The Koehler Programmable Liquid Bath 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 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 K34715 / K34716 series Programmable
Brookfield Viscosity Bath requries little routine
maintenance to provide many years of
continuous service. The bath medium should be
replaced if it becomes dirty or absorbs water /
moisture. If any other service problems arise,
please contact Koehler's technical service
department.
7.2 Replacement Parts
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).
Part Number
Description
091-032-001
Solid State Relay, 4-32V, 20A
275-103-015
Programmable Temperature
Controller, 100-240V
278-001-002
Fuse, 1A, Slo-Blo, 5 x 20mm
278-020-004
Fuse, 20A, Time Delay,
600VAC
278-104-002
Fuse, 0.25A, Slo-Blo, 5 x
20mm
279-115-009
Compact Fluorescent Lamp,
120V, 15W
K34700-03030
Stirrer Shaft
K34700-03035
Dewar Flask
265-400-005
PT-100 RTD Probe
103D
Motor Shaft Coupling

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8 Service
Under normal operating conditions and with
routine maintenance, the Koehler Programmable
Brookfield Viscosity Liquid Bath should not
require service. Any service problem can be
quickly resolved by contacting Koehler’s
technical service department either by letter,
phone, fax, or email. In order to assure the
fastest possible service, please provide us with
the following information.
Model Number:
Serial Number:
Date of Shipment:
9 Storage
This laboratory test instrument is equipped
with electrical components. Storage facilities
should be consistent with an indoor laboratory
environment. This testing equipment should not
be subjected to extremes of temperature and/or
moisture.
This equipment was shipped from the factory
in a corrugated cardboard container. If long term
storage is anticipated, re-packing the instrument
in a water-resistant container is recommended
to ensure equipment safety and longevity.
10 Warranty
We, at Koehler, would like to thank you for
your equipment purchase, which is protected by
the following warranty. If within one (1) year from
the date of receipt, but no longer than fifteen
(15) months from the date of shipment, Koehler
equipment fails to perform properly because of
defects in materials or workmanship, Koehler
Instrument Company, Inc. will repair or, at its
sole discretion, replace the equipment without
charge F.O.B. its plant, provided the equipment
has been properly installed, operated, and
maintained. Koehler Instrument Company must
be advised in writing of the malfunction and
authorize the return of the product to the factory.
The sole responsibility of Koehler Instrument
Company and the purchaser’s exclusive remedy
for any claim arising out of the purchase of any
product is the repair or replacement of the
product. In no event shall the cost of the
purchaser’s remedy exceed the purchase price,
nor shall Koehler Instrument Company be liable
for any special, indirect, incidental,
consequential, or exemplary damages.
KOEHLER INSTRUMENT COMPANY, INC.
DISCLAIMS ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTIES OF FITNESS FOR A
11 Returned Goods Policy
To return products for credit or replacement,
please contact Koehler Customer Service with
your purchase order number, our packing
list/invoice number, the item(s) to be returned
and the reason for the return. You will be issued
a Returned Authorization (RA) number, which
must be prominently displayed on the shipping
container when you return the material to our
plant. Shipping containers without an RA
number prominently displayed will be returned to
the sender. Goods must be returned freight
prepaid. Returns will be subject to a restocking
charge, the application of which will depend
upon the circumstances necessitating the return.
Some returns cannot be authorized, including
certain products purchased from outside
vendors for the convenience of the customer,
products manufactured on special order,
products shipped from the factory past ninety
(90) days, and products which have been used
or modified in such a way that they cannot be
returned to stock for future sale.

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Notes

K34710, K34711, K34712 Brookfield Viscosity Liquid Bath
Operation and Instruction Manual
K34715, K34716-Manual -10-
Notes