Construction and description of measuring instrument
Page 4
HAUG
Static Meter
Ι
2
Construction and description of measuring
instrument
2.1
Basic information about electrostatics
Electrostatic discharge (ESD) causes problems at many electronic working
places, especially where sensitive micro-electronics (IC and MOSFET) are
handled.
Other industrial areas are also concerned such as telecommunication, plastic
converting and explosive areas. ESD can slow down processing speed in
manufacturing and is therefore a significant cost problem. Static electricity is
generated by personnel, their clothing, handled materials and equipment and
can exceed 10.000 volts. Static sensitive electronic devices could be
damaged at static voltage levels less than 100 volts. Static voltage exceeding
3.000 V can cause sparking, which is a danger in explosive areas.
2.2
Short description
Small hand-held electrofieldmeter with digital display designed to measure
electrostatlc voltage potentials (over pre-selected distance) according the
fieldmill influence prlnclple.
2.3
Description
The electrofieldmeter
HAUG
Static Meter
Ι
is designed to measure
electrostatic voltage potentials over the pre-selected distance (distance
between sensor head and object). The selection of the distance is menu-
driven and the following distances are available: 1 cm, 2 cm, 5 cm, 10 cm and
20 cm. The internal micro-computer considers automatically the measured
field strength (V/m) and the pre-selected distance (cm) to calculate the
voltage potential (volt) accordingly. For voltage levels exceeding 1000 V, the
digital display will show the values in kV for a better illustration.
