Rapid movement of large amounts of non-conductive fluids can result in a static electricity charge buildup. It's more severe when involving rapid flow through piping (like an extinguisher's discharge hose) and lots of turbulence and agitation (like at the discharge horn). But if that piping is electrically conductive then that will minimize the voltage potential and then the chance for a static electric shock is much lower.
The CO2 flowing out the hose creates a charge if there isn't a continuous conductor in the braid of the rubber hose. Yes, I've been shocked before when discharging the CO2 before a hydrotest of the cylinder.
Is having conductivity at both points "good (safe)" or "bad (risky for user)"?
Good (safe) -- it's to prevent static electric charge buildup
why is a conductivity test needed?
Rapid movement of large amounts of non-conductive fluids can result in a static electricity charge buildup. It's more severe when involving rapid flow through piping (like an extinguisher's discharge hose) and lots of turbulence and agitation (like at the discharge horn). But if that piping is electrically conductive then that will minimize the voltage potential and then the chance for a static electric shock is much lower.
@@djo9c1 your a refill technician ? well do you have any thoughts I have herd co2 strips electrons off the nozzle?
Why?
The CO2 flowing out the hose creates a charge if there isn't a continuous conductor in the braid of the rubber hose. Yes, I've been shocked before when discharging the CO2 before a hydrotest of the cylinder.