Volume BSH 7:
Part 1 Survey of
On-line Moisture Measurement Methods
This part provides
a practical review of the determination of moisture, mainly
but not exclusively water, in slurries, pastes, cakes and
porous solids. It is limited to on-line methods, and does
not attempt to give any detailed description of the theory
of the techniques described, except where aspects of this
may affect applications.
The first part looks at problems
related to the type of process material. The second examines
the techniques available for moisture determination on-line.
The third describes determinations from the viewpoint of their
process locations, while the final part lists suppliers of
suitable measuring equipment.
Volume BSH 7: Part
2 Selection of On-line Measurement Methods
This part provides a selection
guide for a suitable sensor to measure on-line the moisture
content of either wet bulk granular solids or slurries. Generic
information is provided in terms of the operating principle
of each sensor category, limits of detection, accuracy and
application areas. In addition, specific commercial information
is also given, including the contact details of some manufacturers
and suppliers, and typical costs of commercial instruments.
There are approximately half-a-dozen alternative methods for
the direct measurement of moisture content in wet bulk, granular
solids. These techniques include infra-red reflectance, neutron
moderation, low resolution nuclear magnetic resonance (NMR),
microwave absorption, capacitance, and equilibrium relative
humidity. To assist in the selection process, this report
also includes advice on other factors such as whether the
system is open or closed, whether the material is flowing
or stationary, the response time required of the instrument/technique,
the accuracy required, the ease and frequency of calibration,
and the penetration depth required by the technique to provide
a representative moisture content figure.
Volume BSH 7:
Part 3 Survey of
On-line Level Measurement Methods
To be issued.
