Electrostatic
field meter serve and also versatile tools for solving static issues. Static
charging problems are challenging to detect because the source of the billing
frequently goes to a different place than the observed stimulates. An electrostatic field meter
can identify places where the static cost is high. It can display the polarity
of the fee, which assists determine the resource of the charging. A field meter
also can offer a quantitative estimate for the amount of static fee. Measuring
cost and tracking the level via a process is an excellent way to find the
source of static charging.
When
making use of an electrostatic field meter
to diagnose a static charging issue or when choosing a field meter for a
certain application, three efficiency actions are very important: variety,
spatial resolution, as well as response time.
Range
While
the electric field officially is gauged in volts per meter, one volt per meter
is an extremely tiny field. Electric field meter frequently display field in
kilovolts per centimetre (kV/cm), kilovolts per inch (kV/in.), and also a few
versions present the measured field just in volts. The distance, either
centimetre or inch, is indicated.
The
electric field (E) is restricted by the breakdown strength of air. So at air
pressure, E remains in the series of 0 to ± 30 kV/cm or 0 to ± 76 kV/in. For functional
work, an affordable upper limit is 20 kV/cm or 50 kV/in. Your field meter
should have a resolution of at the very least 1 kV/cm or 2.5 kV/in. so you can
find a 1 µC/ m2 modification accountable density on your movie, which is
practically considerable.
Spatial Resolution
An electrostatic field meter
reacts to bill where the sensing unit is the closest metal item. The electric
field meter reading EMIDDLE is one of the most trustworthy as well as secure
since it reacts to fees on the film in a balanced region that is halfway
between rollers. Reviewing ENEAR likewise replies to charges in a region that
is approximately halfway between rollers. However, the dimension geometry is
not symmetrical, and reading ENEAR will certainly be a lot more variable and
much less reliable than checking out EMIDDLE. Reading EROLLER will certainly be
no due to the fact that the roller is the closest steel object to the movie.
Response Time
The
reaction time of an electric field meter establishes the size of fee variant
that can be detected. Ideally, the response time (TRESPONSE) should be quickly
sufficient to discover charge spots with the same dimension as the spatial
resolution (LRESOLUTION).
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