Unscrew the cover is the first step, it should be stressed that if your tuning fork level meter is flameproof type, then be sure to open the cover to ensure that there is no explosive gas or dust in the air, and then find the lock nut on the cable connector, loosen the nut, and remove a section of insulation skin with the tool to access the cable, about 10 centimeters.

Unscrew the cover is the first step, it should be stressed that if your tuning fork level meter is flameproof type, then be sure to open the cover to ensure that there is no explosive gas or dust in the air, and then find the lock nut on the cable connector, loosen the nut, and remove a section of insulation skin with the tool to access the cable, about 10 centimeters.