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timf

Low cost analog (4-20ma) sensors

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EMS provides low cost analog sensors useful for PLC analog inputs. For example the $25 temperature sensor (+/- 2%) is a useful and inexpensive way to monitor for an over temperature condition in a panel cabinet.

emssensors.com

AC voltage and current transmitters can be a useful way to monitor motor performance. Even the sound level sensor can be a good way to generate an alarm condition for a bearing failure.

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