device and method for measuring electrostatic charge of a powder cloud is caused by

摘要

The device uses a test surface (20) with a number of separate electrically conductive measuring fields (22), inserted in the path of the powder spray (32) provided by a spray coating device (32). Each of the measuring fields is connected to a reference potential via a measuring line (36), with detection of the currents between the measuring fields and the reference potential via an evaluation device (42), for determining the charge distribution within the spray.