What does it mean when the blue LED is rapidly flashing and the signal output is 22 mA?
If the sensor DOES receive a valid acoustic signal return, but the level falls below the calibrated 4 mA empty set point, the blue LED will rapidly flash on and off, and the signal output will go to 22 mA until the level rises back into the span. The solution is to perform a factory reset on the sensor, re-calibrate the span and place the 4 mA empty set point lower in the tank.
