MEASUREMENT AND TEST
2. MICROWAVE RADIATION TEST
PROCEDURE
1. Prepare M icrowave Energy Survey M eter,
600cc glass beaker, and glass therm om eter
100° C (212° F ).
2. Pour 275cc ± 15cc of tap water initially at 20 ± 5 ° C
(68 ± 9° F) in the 600 cc glass beaker with an inside
diam eter of approx. 95 m m (3.5 in.).
3. Place it at the center of the tray and set it in a cavity.
4. Close the door and operate the oven.
5. M easure the leakage by using M icrowave Energy
Survey M eter with dual ranges, set to 2450M Hz.
1) M easured radiation leakage m ust not exceed the
value prescribed below. Leakage for a fully assem bled
oven with door norm ally closed m ust be less than 4m W /cm
2
.
2) W hen m easuring the leakage, always use the 5 cm (2 in.) space cone with probe. Hold the probe perpendicular to the
cabinet and door. Place the space cone of the probe on the door, cabinet, door seem , door viewing screen, the exhaust
air vents and the suction air vents.
3) M easuring should be in a counter-clockwise direction at a rate of 1 in./sec. If the leakage of the cabinet door seem is
unknown, m ove the probe m ore slowly.
4) W hen m easuring near a corner of the door, keep the probe perpendicular to the areas m aking sure the probe end at
the base of the cone does not get closer than 2 in. from any m etal. If it does not, erroneous reading m ay result.
CAUTION
1. M ake sure to check the m icrowave leakage before and after repair of adjustm ent.
2. Always start m easuring of an unknown field to assure safety for operating personnel from m icrowave energy.
3. Do not place your hands into any suspected m icrowave radiation field unless the safe density level is known.
4. Care should be taken not to place the eyes in direct line with the source of m icrowave energy.
5. Slowly approach the unit under test until the radiom eter reads an appreciable m icrowave leakage from the unit
under the test.
