Viscotherm
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Viscotherms are used to determine the viscosity of a fluid; this is done by a small pump being fitted throughout the system of the fluid of which the density is required. This small pump will then produce a constant pressure; this is then forced through a capillary, where the viscosity can be measured by taking pressure readings a certain points off the capillary.
This type of viscotherm is used heavily in the maritime industry for fuel viscosity control, as larger vessels use heavy grades of diesel fuel such as marine diesel oil (MDO) or heavy fuel oil (HFO). These fuels are very viscous and need to be heated so they do not solidify, and also need to be further heated to be used as a combustion product for the various engines on the vessel.
In 1971 the brand name Viscotherm was registered by VAF Instruments B.V. in the Netherlands, the manufacturer of the Viscotherm[1][2].
After a dramatic fire at VAF’s premises in 2009[3] the Viscotherm was declared obsolete. It was replaced by the Viscosense, a small solid and more accurate viscosity measurement system without moving parts for even vaster viscosity measurement. However, VAF made sure that an easy to install retrofit for the Viscotherm, combining an identical shaped house and the state of the art Viscosense, is available[4].
See also
References
- ^ http://www.directorytrademark.com/WO/185910.html
- ^ http://www.patentmaps.com/assignee/Vaf_Instruments_1.html
- ^ http://www.volkskrant.nl/vk/nl/2686/Binnenland/article/detail/334906/2009/05/22/Zeer-grote-brand-verwoest-bedrijfspand-Dordrecht.dhtml
- ^ http://www.vaf.nl/downloadfile/&file=/storage/files/IB_732_GB_0711_Retrofitting.pdf
External links
- [1] VAF Instruments Viscosity Measurement