A versatile inexpensive automatic temperature controller
โ Scribed by N.H. Sze; G.T. Meaden; C.H. Chiu
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 407 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0011-2275
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โฆ Synopsis
A simple temperature controller which does not involve compficated electronic equipment is described. It provides flexible, accurate temperature control for a wide range of cryogenic systems and laboratory experiments. The controller can be operated in several different modes to achieve minimum start up time and maximum operational flexibility. Using the same principle and only slight modifications, it can also be appfied to the control of high temperature.
๐ SIMILAR VOLUMES
A simple and efficient temperature controller suitable for experiments at cryogenic temperatures is described. The controlling efficiency in the temperature range from 77 to 300 K has been found to be better than + 20 inK.
For automatic level regulation of cryogenic liquids in dewar vessels reports of devices using different kinds of level sensors such as capacitance, gas-bulb, and resistance have been published. This note describes a very simple and inexpensive cryogenic liquid level controller which utilizes the for
exhibited very large boil-offs at currents beyond 600 A. The resistance ratio of the copper, measured at 290 K and 4.2 K was 398. This corresponds to the second column of Table . The temperature distributions for the same purity copper calculated on the basis of equations 8 and 3 are displayed as cu