𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A simple level controlling and automatic filling system for liquid nitrogen

✍ Scribed by R. Wäppling; A. Karlsson; L. Häggström

Publisher
Elsevier Science
Year
1970
Weight
155 KB
Volume
79
Category
Article
ISSN
0029-554X

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

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 📂 Article 📅 1973 🏛 Elsevier Science 🌐 English ⚖ 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

Research and technical notes: A system f
Research and technical notes: A system for automatically controlling the filling of nitrogen traps
✍ B.A. Ivanov 📂 Article 📅 1964 🏛 Elsevier Science 🌐 English ⚖ 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.

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 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 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)½ due to the square characteristic of di