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The LB 350 Neutron Moisture meter
is designed to provide a high quality, repeatable measurement
for a variety of moisture measurements. The LB 350 can be
used in bunkers, hoppers and conveyors.
There are two distinct and
separate models. One uses an Insertion arrangement and the
second uses a Surface Mounted arrangement.
Insertion Probe System
The probe is installed in the outlet section of
a bunker or a continuous flow tank so that the built in neutron
source is sufficiently surrounded by material in accordance with
the effective volume. The probe is mounted in a dip pipe, closed
at the bottom end, which is installed into the tank at an angle
of approx. 30 - 45° to the horizontal. Ideally, the wall
thickness of the dip pipe should be between 3 to 5 mm to minimize
signal attenuation at the detector. (The signal is reduced by
about 5% per each 1 mm of steel.) We recommend using a hardened
dip pipe, or a dip pipe with ceramic jacket, to ensure a long
lifetime even when working with abrasive products.
A significant benefit of using this model is
that the probe is much closer to the product being measured.
Since the signal is not reduced due to container wall thickness,
a more accurate measurement can be made.
Surface Mount System
The Surface
moisture measurement system should be used when:
the
dip pipe for the bunker probe is subject to high level of
abrasion from falling product
the
product may fall directly onto the dip pipe
interferences
in the material flow due to a dip pipe are likely to occur
the
bunker has to be accessed for revision purposes
The Surface moisture probe is mounted directly
on the vessel. The steel wall of the vessel should not be
thicker than 20mm so that measurement sensitivity is sufficient.
Mounting frame
A mounting frame is sometimes recommended
because it:
-
provides
accurate measured values, since the measuring signal is not
reduced by the tank wall
-
allows fast
mounting, since the holding device for the moisture
measurement is integrated into the mounting frame
-
offers a long
service life due to a wear-resistant ceramic surface.
The mounting
frame has to be installed in a opening prepared in the tank
wall. After an operating time of several years, a broken wire in
the integrated conductor loop indicates that the ceramic surface
is worn down.
To learn more about the LB 350,
click here
for a brochure!
Click here to go
to our online Quotation Generator.
For further information, please contact
Berthold Technologies
Business Unit Manager, Mick Schwartz at
mick.schwartz@berthold.com.
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