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General information on electrostatics
Calibration.......................................................................................................................................................................... 14
Warning Notices .............................................................................................................................................................. 15
Ad-On facilities :
................................................................................................................................................................ 15
Audit Kit 1 - CPM ............................................................................................................................................................. 15
Additional Scope of Delivery ................................................................................................................................. 15
Audit Kit 2 - Complete ................................................................................................................................................... 16
Additional Scope of Delivery ................................................................................................................................. 16
General information on electrostatics
Nowadays ESD
1
is a problem at many workstations, because modern microelectronics
2
is easily
destroyed by the sequels of ESD. Other branches of industry like e.g. telecommunications-, plas-
tics-, and explosive material industry are also heavily affected by ESD.
ESD causes losses of time as well as high financial losses and can endanger the human health.
Charges of over 10000 Volts can emerge on people, clothes, materials and equipment. Devices
that are sensitive to electrostatics can be damaged by electrostatic discharges of less than
100 Volts. Charges of 3000 Volts and more can cause sparks. In endangered areas that can cause
explosions.
Origin of electrostatic charge
Triboelectricity
3
is caused by attrition of different materials. Electrons are transferred from one
material to the other. As electrons are charged negative the material that releases electrons is
charged positive. The material admitting electrons is charged negative. There are different ways
to avoid or to discharge electrostatic charges. But to find an effective and reasonable solution
first of all the emergence, amount and polarity of the charge have to be found. Our devices are
suitable for that purpose and for the supervision of favored charge.
Product description
The unit is housed into an EMV plastic enclosure. The influence electrode is star shaped. In front
of it in a small distance apart a rotating grounded modulation propeller with the same shape as
the electrode is located. The influence electrode is enclosed by a ring electrode system that is
used as mechanical shield for the propeller wheel and the sensor plate. A 2×12 digit alpha-
numeric LC display is located at the front of the device.
The device has an integrated micro computer with the following functions:
•
Conversion of the measured field intensity over the adjusted measurement distance to
the charge in Volts
•
one button operation
•
permanent supervision of the battery voltage with automatic shut-down
•
charge plate mode
4
•
pos. and neg. Maximum Value memory
5
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electrostatic discharge
2
integrated circuits
3
Greek: tribeia = friction
4
with optional CPS kit
