CEM MARS 6, Руководство по эксплуатации

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11. Select “OK.”
Note
: Follow the procedures outlined below to complete the power test. A description of the power test is also provided on
the instrument screen.
12. Place 1 liter of ambient temperature (18 – 22 ºC) tap water in a 1 liter Teflon® or polypropylene beaker.
13. Stir the water for at least 15 seconds.
14. Using a thermometer with 0.1 °C gradations, measure and record the initial water temperature, T
i.
Ensure that the
thermometer is immersed to its indicated immersion line prior to reading the temperature.
15. Remove the thermometer from the beaker. Carefully place the beaker to the right of the turntable lug (not on the
lug). Gently close the door to avoid spilling any of the water.
16. Select “Start.”
17. At the end of the programmed time (2 minutes), remove the beaker from the microwave cavity. Stir the water
thoroughly for 15 seconds, then measure and record the peak temperature reading. This is the final temperature,
T
f
.
The microwave power output is calculated as follows:
Power in Watts = 47 (T
f
– T
i
)
18. If the measured power is below 1600W, repeat the microwave power measurement. If the power remains less
than 1600W, the instrument is not producing adequate microwave power.
19. Repeat steps 5 through 12 to test the microwave power for the primary and secondary magnetrons.
20. The power output from the primary magnetron should be 1000W. If the measured power is below 890W, the
primary magnetron is not producing adequate microwave power.
21. The power output from the secondary magnetron should be 800W. If the measured power is below 712W, the
secondary magnetron is not producing adequate microwave power.
If one or both of the magnetrons is not producing sufficient wattage, refer to the Troubleshooting Guide in this manual.
Note:
In order to perform an IEC power test, specialized equipment is required. CEM Corporation has provided this power
test as a means of comparison between MARS 6 instruments. The above power test incorporates a factor to convert the
results of this test into an IEC wattage. Actual IEC power tests using specialized equipment are performed at CEM
Corporation headquarters.