R Lambie 1960 J. Sci. Instrum. 37 144 doi:10.1088/0950-7671/37/4/314
R Lambie
Show affiliationsA smoke density recorder is described in which high stability is achieved by the use of stabilized circuits for the light source and head amplifier. A method of calibration by means of optical-density screens standardized for the type of photocell used is given. Drift caused by deposition of smoke on the optical system was overcome by the use of hot air jets. During exterded tests on laboratory and industrial installations, stable operation with negligible drift was obtained.
Issue 4 ( 1 April 1960)
Received 23 May 1959
R Lambie 1960 J. Sci. Instrum. 37 144
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