increased by 10% on average.
(2) Two material positions controller: This is an on/off type of
instrument
position
controller.
It
is characterized by a main
which can
simultaneously control two
material positions, the
upper material level and the lower material level.
In the course
the
of production it is sometimes not only necessary to maintain
i.e. the lower limit, materials position above a certain limit, but it is also necessary to maintain the level of materials below
it In this case certain limit, i.e. the
upper limit.
two material positions controller
a
necessary to
continous production.
(3) Continuous material
is
to allow
position
meter:
This
instrument
is
suitable
for
when use
the position
of
materials
must
be
as for example in the continuous
casting
Continuous
continously displayed,
of molten steel, or in the production of chemicals.
display can be achieved by using a rod source and a detector,
a point radiation source and a long detector or
(such as multiple sources and multiple detectors).
2.
Thickness gauge:
OI
in other ways
These are widely used to measure the thickness
the
thickness of
metal
plating,
of plates,
particularly
for
strips or
carrying out continous measurement on a production line.
of great significance for automatizing production and
This is
ensuring
quality. They can be divided into two types according to
different working pricniples:
Penetration-type thickness gauges:
(1)
according
to the
principle
of
their
These are manufactured
radiation
absorption
by
the
3
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