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What does it mean when the blue LED is on and the signal output is 22 mA?

April 26, 2017BLUE LED ma mean output signal

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What does it mean when the blue LED is on and the signal output is 22 mA?

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If the sensor does NOT receive a valid acoustic signal return, the blue LED will turn on, and the signal output will go to 22 mA until the sensor acquires the level. This is generally caused by the presence of substantial foam, vapor and/or turbulence. Click to view ultrasonic white paper.