Improvements in calibration at silver or Copper point

Isothermal Technology Limited, Pine Grove, Southport, PR9 9AG, England

^* Correspondence: info@isotech.co.uk

Received: 15 December 2009
Accepted: 5 February 2010

Abstract

The main purpose of the paper is to describe the construction and performance of a new and novel Silver and Copper point system that combines a conventional ingot of silver or copper in a graphite crucible, with a specially designed heat dewar or heat siphon to form a single entity. Furthermore, to add above this entity a heated collar to exactly compensate for heat losses upwards and the stem conduction effects of the thermometer being calibrated. The overall construction contains no glass parts, is rugged, compact and transportable. Its performance is similar to large quartz clad cells in floor standing heat pipe apparatus at a fraction of the size and cost.