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NN-G55 AR
PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE
1. Equipment
*Electromagnatic radiation monitor
*Glass thermometer 212 ºF or 100 ºC
*Glass beaker
2. Procedure for measuring radiation leakage
Note before measuring.
(1) Do not exceed meter full scale deflection. Leakage
monitor should initially be set to the highest scale.
(2) To prevent false readings the test probe should be held
by the grip portion of the handle only and moved along
the shaded area in Figure no faster than 2,5cm/sec.
(3) Leakage with the outer panel removed less than
5mW/cm
2
.
(4) Leakage for a fully assembled oven with door normally
closed less than 2mW/cm
2
.
(5) Leakage for a fully assembled oven [Before the latch
switch (primary) is interrupted] while pulling the door less
than 2mW/cm
2
.
(A) Pour 275 ± 15ml water in a beaker and place in the center
of the oven.
(B) Set the radiation monitor to 2450MHz and use it following
the manufacturer’s recommended test procedure to
assure correct results.
(C) When measuring the leakage, always use the 5cm
spacer supplied with the probe.
(D) Tap the start pad or set the timer and with the magnetron
oscillating, measure the leakage by holding the probe
perpendicular to the surface being measured.
(1) Measurement with the outer panel removed.
Whenever you replace the magnetron, measure for
radiation leakage before the outer panel is installed and
after all necessary components are replaced or adjusted.
Special care should be taken in measur ing around the
magnetron.
(2) Measurements with a fully assembled oven.
After all components, including outer panel are fully
assembled, measure for radiation leakage around the
door periphery, the door viewing window, the exhaust
opening and air inlet openings.
MOVE PROBE ALONG SHADED AREA( )AROUND EXHAUST
OPENINGS AND AROUND AIR INLET OPENING
