On Electrostatic powder guns the actual high voltage output can differ from the voltage reading that appears on the control unit.
Most units have a circuit inside that measures the high voltage.
For example when your gun becomes coated with even a thin film of powder this can cause the high voltage current to dissipate towards the ground connection. On electrostatic units the actual gun output is crucial to coating efficiency. Our Static-Check STC3 is a tool that you can immediately use to monitor your actual voltage output and take control of your powder coating operation. If parts are not grounded correctly the powder will simply not stick to them whether it is sprayed with an ES or a Tribo gun.