R-8470
R-8570
MICROWAVE MEASUREMENT
After the adjustment of the door latch switches, moni-
tor switch and door are completed individually or col-
lectively, the following leakage test must be performed
with a survey instrument and it must be confirmed that
the result meets the requirements of the performance
standard for microwave oven.
The safety switch must prevent microwave radiation
emission in excess of
at any point 5cm or
more from external surface of the oven.
Before beginning the actual test for leakage, proceed
as follows;
Make
test instrument is operating normally
as specified in its instruction booklet.
Important:
Survey instruments that comply with the require-
ment for instrumentations prescribed by the per-
formance standard for microwave ovens must be
used for testing.
Recommended instruments are:
NARDA 8100
NARDA 8200
HOLDADYA HI 1500
SIMPSON 3800M
2. Place the turntabel tray into the oven cavity.
3. Place the load of 275
of water initially at
20
in the centre of the oven tray. The water
container should be a low form of 600 ml beaker
with inside diameter of approx.
and made of
an electrically non-conductive material such as
glass or plastic.
The placing of this standard load in the oven is im-
portant not only to protect the oven, but also to in-
sure that ny leakage is measured accurately.
4. Close the door and turn the oven ON with the timer
set for several minutes. If the water begins to boil
before the survey is completed, replace it with
275ml of the cool water.
5. Move the probe slowly (not faster that
along the gap.
6. The microwave radiation emission should be meas-
ured at any point of 5cm or more from the external
surface of the oven.
Содержание R-8470
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