The periodic verification system Model 775PVS hand-held alternative to a charged plate monitor. It consists of three components a fieldmeter, a detachable plate, and a charger-for measuring static charge and verifying ionizer performance. Used alone, the fieldmeter measures electrostatic fields on any surface. Ranging lights ensure accurate and repeatable measurements by enabling users to determine the exact distance at which the voltage reading is correct. A SAMPLE and HOLD function allows measurements in places difficult to reach with other instruments. Attach the plate and use the charger, and the Model 775PVS can be used to verify ionizer operation and check ion balance and discharge times. The unit is designed to take measurements that correspond to those made by a charged plate monitor following Ionization Standard ANSI EOS/ESD S3.1-2006 of the ESD Association. For increased accuracy, the included flexible ground cord should be used to connect to a solid ground during operation.