ETS-Lindgren HI-1501 Microwave Oven Survey Meter - Manual (Page 27)

HI n 1501 Manual Page — 19
7.0 WHAT THE MEASUREMENT MEANS
Introduction
The FDA/CDRH (Food and Drug Administration/Center for
Devices and Radiological Health) has established the
following requirements concerning microwave oven
leakage:
The power density (leakage) emitted by a microwave
oven shall not exceed one milliwatt per square
centimeter (1 mW/cm 2 ) measured prior to acquisition
by a purchaser, and thereafter, five milliwatts per
square centimeter (5 mW/cm 2 ).
Ovens in use today often have leakage values in the 0.1
to 0.4 mW/cm 2 range, usually less than 0.6 when
received from the manufacturer.
If the oven leakage exceeds 5 mW/cm 2 , you should
contact a service agency recommended by the oven
manufacturer, or contact the manufacturer directly. This
oven must be repaired to comply with the CDRH safety
guidelines.
You may wish to write down for future reference the
leakage level, and the model number and serial number of
the meter used to make the measurement. Be sure to
note the calibration due date of the instrument; for
assurance of accurate readings, the microwave survey
meter should have been calibrated within the last 12
months.