Automatic ionization-thermocouple vacuum gage

1997 ◽  
Vol 40 (2) ◽  
pp. 127-129 ◽  
Author(s):  
V. V. Evstifeev ◽  
N. M. Krylov ◽  
N. M. S'edin ◽  
B. L. Svistunov ◽  
P. P. Pershenkov
Keyword(s):  
Vacuum Gage

A SYSTEM FOR PROTECTING AN OIL DIFFUSION PUMP AGAINST FAILURE OF THE MECHANICAL FORE PUMP, COOLING WATER, OR ELECTRICITY

1970 ◽  
Vol 28 ◽  
pp. 344-345
Author(s):  
W. C. Bigelow ◽  
F. B. Drogosz ◽  
S. Nitschke
Keyword(s):  
High Vacuum ◽  
Cooling Water ◽  
Effective Protection ◽  
Pump Line ◽  
Diffusion Pump ◽  
System Pressure ◽  
Control Relay ◽  
Vacuum Systems ◽  
Vacuum Gage ◽  
Pressure Switch

High vacuum systems with oil diffusion pumps usually have a pressure switch to protect against Insufficient cooling water; however, If left unattended for long periods of time, failure of the mechanical fore pump can occur with equally serious results. The device shown schematically in Fig. 1 has been found to give effective protection against both these failures, yet it is inexpensive and relatively simple to build and operate.With this system, pressure in the fore pump line is measured by thermocouple vacuum gage TVG (CVC G.TC-004) whose output is monitored by meter relay MRy (Weston 1092 Sensitrol) which is set to close if the pressure rises above about 0.2 torr. This energizes control relay CRy (Potter & Brumfield KA5Y 120VAC SPDT) cutting off power to solenoid-operated fore line valve Vf (Cenco 94280-4 Norm. Closed) which closes to prevent further leakage of air into the diffusion pump

A New Vacuum Gage of Extreme Sensitiveness

1913 ◽  
Vol 75 (1949supp) ◽  
pp. 299-299 ◽  
Author(s):  
Irving Langmuir
Keyword(s):  
Vacuum Gage

scholarly journals Models of adaptation of the milking machines systems

2018 ◽  
Vol 10 ◽  
pp. 02004
Author(s):  
Vasyl Dmytriv ◽  
Ihor Dmytriv ◽  
Yurij Lavryk ◽  
Ivan Horodeckyy
Keyword(s):  
Technological Process ◽  
Pressure Oscillation ◽  
Load Factor ◽  
Cyber Physical System ◽  
Technical Equipment ◽  
Machine Milking ◽  
Gage Pressure ◽  
Biotechnical System ◽  
Milking Machine ◽  
Vacuum Gage

Two systems of milking machines were considered - biotechnical and vacuum. Methodology for estimation of efficiency of the "machine-animal" biotechnical system was worked out. The dependences of the efficiency parameters of the technical system operation were analyzed. The KMMO operator load factor of the milking machine was proposed. The factor characterizes the technological process of the machine milking. The analytical dependences were worked out for the simulation of the productivity of milking machines and oscillation of the vacuum-gage pressure. As to the simulation results, when the vacuum pipeline diameter was increased the oscillation of the vacuum-gage pressure decreased. The results of analysis and theoretical researches on technological process of the cow machine milking gave a possibility to define the requirements to the improvement of technological process and technical equipment, which will provide the increase of efficiency of the milking systems. Usage of the developed cyber-physical system of the machine milking of cows will increase the productivity of the milking machine in 1.26…1.85 times. At the vacuum gage pressure oscillation of ΔPvp = 2500 Pa the suction ability of milking machine will be E=4.093 m/s accordingly. The defined index of efficiency of the adapted systems functioning of the milking machine is KBTS2 = 55.3.

scholarly journals A NEW DIRECT READING VACUUM GAGE

1920 ◽  
Vol 20 (6) ◽  
pp. 495-498
Author(s):  
W. H. Farr
Keyword(s):  
Direct Reading ◽  
Vacuum Gage
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