- Thread starter monkeymark
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An FNIRSI HRM-10 battery voltage and internal resistance tester:
Very impressed, so far. The HRM-10 doesn't need battery voltage to be present between the leads to measure resistance, and it will measure just about anything; welding leads, car jump leads, Li-ion or alkaline cells, or the resistance of a length of silver steel, for example. Also ended up getting the "round connector testing probe" cylindrical cell tester, and the double probe test leads, to go with it.
Very impressed, so far. The HRM-10 doesn't need battery voltage to be present between the leads to measure resistance, and it will measure just about anything; welding leads, car jump leads, Li-ion or alkaline cells, or the resistance of a length of silver steel, for example. Also ended up getting the "round connector testing probe" cylindrical cell tester, and the double probe test leads, to go with it.
badabec
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That's a win isn't it?That's no bad thing. The bacon ones are delicious but they chronically repeat on me, I burp bacon flavour for hours afterwards.
Kram
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Thats sort of standard, resistance is tested by outputting a precise voltage and checking the current delivered tho batteries might be done by instead drawing a load.
I was looking at one of their ossiloscope DMM's but a couple of reviews put me off, seems they can die quite rapidly.
MattF
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What manufacturer makes bullet-proof equipment. Any brand can have occasional issues/faults.
Reviews should always be taken with a pinch of salt.
It's basically the classical four terminal low resistance measurement technique. This meter seems to work by injecting current at ~1kHz, using one terminal on each side of the Kelvin clips, and measuring the voltage waveform that occurs in response, using the second terminal on each side. The resulting resistance readings are surprisingly stable, and resolution is down to 10 microOhms. It was able to pick up a slightly loose clamping screw fault in a welding lead.
