K34710, K34711, K34712 Brookfield Viscosity Liquid Bath
Operation and Instruction Manual
K34715, K34716-Manual
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2-
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: +1 631 589 3800
Fax: +1 631 589 3815
Email: [email protected]
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
email: [email protected]
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: 44 (0)20 7467 7100
Fax: 44 (0)20 7255 1472
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 : 41 22 749 01 11
Fax: 41 22 733 34 30
http://www.iso.ch
Email:
ISO Publication
ISO 2962
