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Author Topic: Two wire hall effect gear sensor  (Read 1290 times)
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If it was me, I would just buy a Allegro version that uses voltage output:

That's what I would suggest or maybe the ATS627 if you need it to work below 10Hz.
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At the risk of sounding stupid, how can I tell which are current output and which are voltage?

Thanks, Mark.
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At the risk of sounding stupid, how can I tell which are current output and which are voltage?

Thanks, Mark.

By careful reading of the datasheet. But the term 'two wire' is kind of a process control world 'buzz word' for current loop devices. Most sensors used in process plants use current loop sensors because it allows for long cable runs between the sensors and the control system that won't be effected by the length of cabling causing voltage drops that would effect accuracy.

Lefty

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A quick test is if it has three or more leads, it's probably a voltage out. Otherwise you would have to take a close look ate the data sheet. Both the parts that Lefty and I suggested are voltage out.
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Great stuff, thanks! I'll try the latter one suggested. I'm attempting to sense the rotation of a carousel within a jukebox.

- Mark.
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