Sheath Thermometer Construction
The element is constructed from a high purity platinum wire and is
formed and processed to produce a strain free construction. This is then
introduced into a platinum sheath which is helium filled to
approximately 1/3 atmosphere at 20°C to
reduce the response time to approximately 2 seconds.
Platinum Thermometer Application
The thermometer is suitable for use in the temperature range 13.08K
to 330K and may be used totally immersed in a liquid, provided the
liquid is a good electrical insulator.