
SV4000 Saybolt Viscosity Bath for Automatic Viscosity Timing
Operation and Instruction Manual
SV4000-Manual -2-
1. Introduction
The Koehler SV4000 Saybolt Viscosity Bath
for Automatic Viscosity Timing is the latest
design for determining viscosity using saybolt
viscometer tubes and orifices equipped with
automatic timing sensors. The bath can be set
for operating temperatures from ambient to
240°C (464°F). It is equipped with an internal
cooling coil that when connected to an external
cooling source, can be utilized for rapid cooling
of the bath medium and for operation at near-
ambient temperatures.
This instrument determines the time required
for 60mL of sample to flow through a calibrated
orifice under precisely controlled conditions.
Saybolt Universal Seconds (SUS) is the
standard measurement for lubricants, insulating
oils, and lighter fuel grades, and Saybolt Furol
Seconds (SFS) is used for heavier oils and
bitumens. The instrument conforms to the
ASTM D88 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 Saybolt Viscosity
Bath. 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 to provide 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: +1 631 589 3800
Fax: +1 631 589 3815
Email: info@koehlerinstrument.com
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: +1 610 832 9500
Fax: +1 610 832 9555
http://www.astm.org
E-mail: service@astm.org
ASTM Publication:
ASTM D88: Standard Test Method for
Saybolt Viscosity
ASTM D244: Standard Test Method for
Emulsified Asphalts
ASTM E102: Standard Test Method for
Saybolt Furol Viscosity of Bituminous
Materials at High Temperatures
2. American Association of State Highway and
Transportation Officials (AASHTO)
444 North Capitol Street N.W., Suite 249
Washington, DC 20001
Phone: +1 202 624-5800
Fax: +1 202 624-5806
E-mail: info@aashto.org
AASHTO Publication:
AASHTO T72: Standard Method of Test for
Saybolt Viscosity
3. Federal Test Method (FTM)
FTM Publication:
FTM 791-304