I REPLACED THE 9VOLT BATTERY AND IT STILL DOESNT WORK BUT WHEN THE LEADS GET HOOKED UP U CAN HEAR THEM TRYING TO WORK JUST WONDERING WHAT PURPASE DOES THE 3 VOLT BATTERY SERVE
All meters capable of resistance measurements require batteries to power the circuit under test and meter movement.
Some manufacturers prefer to use 2 different voltage sources to be applied to specific ranges offered. They use the lower voltage for low resistance ranges and higher voltages for high resistance ranges. Doing this help prevent larger currents (and wattages) from flowing in the component or circuit under test when the low resistance ranges are selected.
Higher resistance components and circuits will have significantly lower current flow (and lower wattages), so a higher voltage is supported and provides greater resolution of measured values on the meter.
I hope this helps & good luck!
How to insert batteries in megger VF2
Perhaps, your machine's battery not working properly. I must tell you that you should change it immediately. You need a battery which run in your machine properly.
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