Monitoring spray action of spray gun - measuring pressure in chamber and comparing with predetermined pressure threshold value

摘要

The spray gun has a chamber for the substance to be sprayed which is ejected under pressure and filled up in the pauses. A control signal for a pressure amplifier starts the spraying process. The chamber pressure is measured. When the spraying starts the pressure is compared with a predetermined pressure threshold value (7). A check is made to ascertain if the exceeding of the latter lies within a predetermined period. An indication is given if the threshold value is not attained or is exceeded during the set period. USE - Ensuring good, even spray work.