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A time controlled automatic filling device for liquid nitrogen traps

✍ Scribed by K.J. Close; E.B. Hodges; F. Atchison

Publisher
Elsevier Science
Year
1966
Tongue
English
Weight
130 KB
Volume
16
Category
Article
ISSN
0042-207X

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πŸ“œ SIMILAR VOLUMES

Research and technical notes: A system f
Research and technical notes: A system for automatically controlling the filling of nitrogen traps
✍ B.A. Ivanov πŸ“‚ Article πŸ“… 1964 πŸ› Elsevier Science 🌐 English βš– 74 KB

T s E proposed system controls nitrogen flow, providing a stable deep cooling of circulating traps for diffusion pumps. The necessary pressure is maintained in a Dewar by means of an automatic valve and a heater on the nitrogen line, and as the nitrogen reserve is exhausted a signal is switched on.

A simple automatic device for controllin
A simple automatic device for controlling levels of liquid nitrogen within two pre-set limits
✍ H.L. Chhatwal; N. Chaudhuri πŸ“‚ Article πŸ“… 1973 πŸ› Elsevier Science 🌐 English βš– 191 KB

word of caution may be in order. The ratio of the densities of the liquid to that of the gas is much lower for helium than for other fluids for equilibrium conditions at the same pressure. This might require that the quality term in the expression using mixture properties be modified or, if not, les

An automatic device for controlling leve
An automatic device for controlling level of liquid nitrogen within two pre-set limits
✍ H.L. Chhatwal; N. Chaudhuri πŸ“‚ Article πŸ“… 1972 πŸ› Elsevier Science 🌐 English βš– 179 KB

refrigeration power. Q' is linearly proportional to temperature difference AT = T o -T, where T o is the setting temperature and T is the actual temperature. For small AT, the input of the regulator Vi q is proportional to AT. IC-1 transforms Vin to (Vin + Vo)Β½ due to the square characteristic of di