Radiation Surcey of Dielectric (RF) Heaters in Canada

Abstract
Surveys of dielectric radio-frequency heaters were conducted at Various plants throughout Canada in 1979. The heaters were used for plastic sealing and for gluing wood pieces. The devices operated at frequencies between 4 and 51 MHz and their power output ranges from 0.5 to 90 kW. The intensities of the electric and magnetic fields in the vicinity of 82 devices were measured. A significant number of the devices exposed their operators to the fields having the equivalent power density greater than 1 mW/cm2, and some greater than 10 mW/cm2.