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General Operation
8.1 Heat Transfer Fluid
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8.1.10.4 Silicone Oil
Silicone oils are available which offer a much wider operating temperature range
than mineral oil. Like most oils, silicone oils have temperature control
characteristics, which are somewhat poorer than water. The viscosity changes
significantly with temperature and thermal expansion also occurs. These oils
have very high electrical resistivity. Silicone oils are fairly safe and non-toxic, but
can be fairly expensive.
8.1.11 Fluid Characteristics CFlukes
CAUTION:
Due to the unique properties of silicone oils and their ability to
migrate and creep through seals, adequate ventilation must be
used to prevent oil vapors from creating an oily, dirty
environment. Oily, dirty environments reduce the lifetime of the
instruments electrical components.
Table 2 and Figure 4 have been created to provide help in selecting a heat
exchange fluid media for your constant temperature bath. These cFlukes provide
both a visual and numerical representation of most of the physical qualities
important in making a selection. The list is not all inclusive. There may be other
useful fluids not shown in this listing. The cFlukes include information on a variety
of fluids, which are often used as heat transfer fluid in baths. Because of the
temperature range some fluids may not be useful with your bath.
8.1.11.1 Limitations and Disclaimer
The information given in this manual regarding fluids is intended only to be used
as a general guide in choosing a fluid. Though every effort has been made to
provide correct information we cannot guarantee accuracy of data or assure
suitability of a fluid for a particular application. Specifications may change and
sources sometimes offer differing information. Fluke cannot be liable for any
personal injury or damage to equipment, product or facilities resulting from the
use of these fluids. The user of the bath is responsible for collecting correct
information, exercising proper judgment, and insuring safe operation. Operating
near the limits of certain properties such as the flash point or viscosity can
compromise safety or performance. Your company’s safety policies regarding
flash points, toxicity, and such issues must be considered. You are responsible
for reading the MSDS (material safety data sheets) and acting accordingly.
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