Variable leak gas source

Details Variable leak gas source Variable leak gas source

1974-10-04

1977-04-12

Queisser, Richard C.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73 407, G01D 2100

Patent

active

040167437

ABSTRACT:
A variable leak gas source and a method for obtaining the same which includes filling a quantity of hollow glass micro-spheres with a gas, storing said quantity in a confined chamber having a controllable outlet, heating said chamber above room temperature, and controlling the temperature of said chamber to control the quantity of gas passing out of said controllable outlet. Individual gas filled spheres may be utilized for calibration purposes by breaking a sphere having a known quantity of a known gas to calibrate a gas detection apparatus.

REFERENCES:
patent: 2797201 (1957-06-01), Veatch et al.
patent: 3002387 (1961-10-01), Micheletti
patent: 3030215 (1962-04-01), Veatch et al.
patent: 3516278 (1970-06-01), Klein et al.
O'Keeffe, A. E. et al Primary Standards for Trace Gas Analysis in Anal. Chem. 38(6): pp. 760-763, May 1966.

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