Amprobe TX900 Microwave-Leakage-Detector - Manual (Page 6)

5
SyMboLS

Battery

Refer to the manual

Conforms to relevant
Australian standards.

Complies with EU
directives

Do not dispose of this
product as unsorted
municipal waste.

Audible tone
SAfETy INfoRMATIoN
 Warnings and Precautions
Inspect the RF detector before every use. Do not use a damaged unit. •
Do not operate the instrument in an explosive atmosphere. •
To reduce the risk of fire or electric shock, do not expose this product to •
rain or moisture.
To avoid false readings, which could lead to possible personal injury,
•
replace the batteries as soon as the low battery indicator (LoBat) appears.
CoNTENTS
1 TX900 Microwave Leakage Detector
2 500 ml Plastic Beakers
1 Spirit (alcohol) Glass Thermometer
1 9V PP3 type battery
1 Carrying case
1 Sample set of “RF Emission Labels”
1 Registration card
1 Certificate of Conformance
INTRoDUCTIoN
The TX900 is a microwave radiation detector for checking RF power leakage
in microwave cooking ovens. The TX900 has temperature compensation and
Auto-zero for the display.
oPERATIoN
 WARNING
1 mW/cm 2 Threshold: If a signal level greater than 1 mW/cm 2 is detected, a
beeper will sound and remain on until the signal level falls below 1 mW/cm 2 .
overload: If a signal level greater than 10 mW/cm 2 is detected during
testing, an “overload” condition will be indicated by the display showing
the letters “oL”.
Linear display: In the event that the signal is a high, rapidly varying value, it
may be useful to refer to the 10 point linear display to give an indication of
the average rather than the rapidly changing alpha numeric display.
Rf Power Leakage testing
Fill a beaker with 275 cc ±15cc of water and place it in the microwave 1.
oven to act as a load for the magnetron.
Point the instrument away from the potential RF source and depress the
2.
TEST button. This turns ON the instrument and sets ‘Auto Zero’ the LCD
display for ‘0.0’ mW/cm
2 .
Setup the microwave oven for full power and switch ON. 3.
The TEST button must be held down during testing. 4.
Move the tip of the instrument cone (almost touching) at about 5 cm / 5.
second around possible leakage areas - door seals, hinges, door seams,
windows, welds and rivets.
Leakage should not exceed 5 mW/cm
6. 2 at a distance of 5 cm (1.96 inches).
Many manufacturers have lower emission levels from their ovens. Consult
the microwave oven manufacturers data for specifications.
Write down the highest reading displayed during the test and location on
7.
a suitable label, which should then be affixed to the oven.