For Helium leak test, the acceptance criterion is as follows: (i) e- lusecs per cubic meter for over all leak testing....
what does lusecs mean? I searched the net, but I could only find the following Leak rate(lusecs)=volume(litres)x Pressure Rise in microns (10-3 Torr).
Can anyone clarrify the above..
by Robert Fogt on 06/03/05 at 04:53:39
I found the following definition for lusecs.
lusec a unit of power used to express the performance or leakage of vacuum pumps. One lusec represents a flow of one liter per second at a pressure of one micrometer (or micron) of mercury, or 1 L·µmHg/s. Since "u" is sometimes used as a symbol for the micron, the name of the unit is an acronym for liter-micron/second. One lusec is equivalent to 1.3156 atm·cm3/s or 133.3 Pa·cm3/s, which is the same as 133.3 microwatts.