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| Petroleum Testing |
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A whole selection of
petroleum test equipment to ASTM standards. |
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Portable Octane
analysers |
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Chlorine analysers
& Sulfur analysers |
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| Cement/Core PVT
Testing |
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Core analysis,
petrophysics & rock mechanicss |
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PVT, porrositmeters,
cement testing equipments |
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Core flood analysis
equipments |
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| Refinery analysers |
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Specialising in on-line
analytical instrumentation for oil, gasindustries s |
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| Scientific
Equipment |
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Specialising in high precision viscometers, rheometers and
other scientific instruments |
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Various specialist gas
generators |
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UV spectrophotometers/
Microwave digestion/ spectrometers |
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| Building
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Middle East agents for
bricks and paviours |
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| Publications |
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Global magazine/ periodical subscription
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| Health and
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Back supports |
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Mindex Ltd back support reduce back injury in the
workplace |
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| Petrochemicals |
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Chemical marker for petroleum based
products. |
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| We
manufacture high temperature & low temperature viscometers and our models
BS/C & BE/C are specified for viscosity measurement by ACEA and SAE J300.
The designated methods for these instruments are ASTM D 4741, CEC
L-36-A-90 and IP 370 . Many will be aware that our competitors claim to achieve
nearly 10 million reciprocal seconds shear rate. We do not believe this for
sound and cogent reasons which we are happy to discuss with you. Ravenfield
guarantee that they can achieve shear rates in excess of 2.5 million reciprocal
seconds and can prove from fundamental principles that those results are valid,
which is why the Ravenfield HTHS has the highest repeatability and
reproducibility of any available HTHS test method. |
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High Temperature High Shear Viscometers BS/C Viscometer Ravenfield HTHS
viscometers are the favoured testing equipment of European lubricant
manufacturers. Ravenfield instruments are specified in the ACEA test regime.
Model BE/C is designed solely for testing at 150°C and 1 million reciprocal
seconds while our models BS/C and BS/C+ are full research grade instruments
Models BS/C & BS/C+ The top selling Ravenfield Viscometer is the
HTHS Model BS/C. This instrument measures the High Temperature High Shear
viscosity of engine lubricants according to ASTM D 4741, CEC L-36-A-90 &
IP370 as specified by SAE J300 and ACEA. ASTM D 4741 is aligned with ASTM
methods D 4683 (TBS) and D 5481 lubricant measurement ferranti viscometers
viscosity standards standard test methods biomedical instruments metallurgical
dental alginate ravenfield services ancilliary equipment custom designs courses
This high precision tapered plug viscometer runs under computer
control with a simple to operate user interface. This semi-automatic instrument
leads the operator through the calibration and measurement procedures. By
joining the Model BS/C to the Model DR AutoSampler 18 oil samples can be tested
without further operator intervention making the sample testing procedure fully
automatic.
The standard model of BS/C is designed to measure at
temperatures from 60°C to 180°C and shear rates from 100,000 to
1,500,000 reciprocal seconds.
There is even a facility to
determine flow curves of oils automatically. It is now possible to
automatically control cell temperature and recalibrate on the fly from samples
on the carousel.
The BS/C+ is fitted with a more powerful motor which
enables it to measure at lower temperatures and higher shear rates than the
standard BS/C.
Model BE/C The Ravenfield Designs Viscometer HTHS
Model BE/C also measures HTHS viscosity of engine lubricants according to the
same standard test methods as both the BS/C and BS/C+. This manual high
precision tapered plug viscometer is the entry level HTHS viscometer suitable
for labs which only perform HTHS tests occasionally.
Model BE/C
is designed to operate only under the standard conditions of 1,000,000
reciprocal seconds at 150°C.
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