Elevation Correction Factors K)r E-perm(r) Radon Monitors

E-PERM(R) radon monitors are based on the principle of electret ion chambers and these are usually calibrated in a standard radon chamber located at sea level. Corrections are needed if these are used in elevations other than sea level. These were experimentally determined for three models of commercially available electret ion chambers (E-PERMS(R)) as functions of elevation above sea level. . These constitute a slowly varying minor corrections. 1 E-PERM(R) is a registered trademark of the product patented and manufactured by Rad Elec Inc., Frederick, MD 21701 USA 2 Modified version of this paper is in the process of publication in Health Physics Journal (1992).