9
6. Timing and alarm functions: maximum value of stopwatch is 19 minutes
and 59 seconds. 20 minutes for a cycle. The stopwatch will tell the time at
these time points: 15 seconds, 60 seconds and every 60 seconds. When
telling time, resistance readings hold for 3 seconds. If the measured resistance
is below the lower limit of range, the reading is invalid and the instrument will
continuously sound to give an alarm.
7. Display: three and a half bits LCD digital meter (three), respectively
show test voltage, test resistance, test time.
8. Power supply
DC: rechargeable lithium battery, DC15V power supply. With AC (50 /
60Hz) special adapter access port to charge the battery.
9. Operating Conditions:
Temperature: -20
℃
~
﹢
40
℃
.
Relative humidity: 20
～
90%.
10. Dimensions
：
315×240×180mm.
11. Weight
：
5.5kg.
IV. Working Principle
It features dual division integral digital voltmeter ohm - digital conversion,
this technology has a very high anti-interference ability, ohms reading
unchanged when test voltage fluctuation significantly under low frequency
interference.
0 ~ 5kV test voltage is excited with the feedback it generates a DC voltage
converter circuit. Test voltage is high, with a strong ability to adjust
automatically, so that the instrument also has the capability of non-interference
is generally similar instruments is reached.
