Forum Discussion
ktmrfs
May 27, 2019Explorer II
landyacht318 wrote:
What I love about the hall effect ammeter is that it can be put on the (+) battery cable. I used to have my HE sensor readng total alternator output, but once that cursiosity was satisfied, I moved it to the battery cable.
Should be noted that they provided a 2 meter 3 wire ribbon cable for my meter for between sensor and display, and I cut this in half and added some about 5 feet pf 22AWg wires to its center. This could be why mine bounces around 0.6 amps from actual, or perhaps it would do sao without this midification, I know not, Its not a big deal. Sometimes it does not bounce around that 0.3 amps +/- actual.
I just like seeing how much amperage the battery accepts a minute after starting the engine, and watching that decline as I drive. Well worth the 18$ I spent for it.
Glad to see there are so many other hall effect ammeters on the market now.
the reading bounce you see is likely not a result of the longer wires. (1) if you are moving, IMHO all bet's are off with a hall device sensor for stable readings, the earths magnetic field variations along with variations of anything nearby can cause the hall device output to change. and (2) even when stationary lower readings on hall devices have variations unless the design was very well done and well shielded from outside magnetic fields.
It is nice to see the hall device DC current meters on the market now at reasonable prices with reasonable accuracy. Not that long ago hall device DC meters were pretty spendy.
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