Richard Ray wrote: > On Sun, 17 Mar 2013, Jon Elson wrote: > > >> kqt4a...@gmail.com wrote: >> >>> I have a need to read dc current >>> 36 volts up to 100 amps "reasonably" accurate >>> I am looking at Tamura L03S100D15 with Arduino >>> I am sure y'all have other suggestions hopefully cheaper >>> >>> >> I used some similar tamura Hall current sensors in a project >> some years ago. You could read the output with as simple >> a setup as a hand-held DVM or a panel mount voltmeter >> like from Red Lion or similar. >> >> Beware of getting magnets near the sensor, it will be affected >> even by the earth's magnetic field, so if you pick up the >> equipment and move it, the zero will shift. >> >> > > So does that mean that since this is modiles equipment that a hall sensor > will not work > > You meant mobile? No, the zero drift is not huge, but more than a couple % of full range. Tamura supposedly has a "shielded" version of these sensors, too, which I expect would have less of this effect.
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