Pulsar dBi Series, Инструкция по эксплуатации

Страница: 22 / 65

Page 14
When using a standpipe, fixed to the top of a vessel, ensure that the open
end of the standpipe is clear of any obstructions such as weld seams, gaskets
etc. in order to avoid unwanted signal returns.
If using standpipes which extend in to the vessel, beyond the blanking
distance, but not as far as the empty level, then the open end of the standpipe
should be cut to an angle of 45
o
.
When using the dBi Series Intelligent Transducer
to measure ‘aggressive,
materials such as ‘
alkaline
’ and ‘a
cids
’ it is recommended that either a
PVDF or an optional PTFE faced Flanged Transducer is used. Please
consult Pulsar for full availability of options.
Cable
The dBi Series Intelligent Transducer comes with a fitted integral cable, if
this cable is extended then the total capacitance must not exceed the limits
for the voltage applied.
Important Information
In the case of the Ex mb version the cable is fitted with an over
current protection device in the form of a fuse, please note that
under no circumstances should this fuse be removed . The fuse
must be fitted in the non-hazardous area,
Correct
standpipe
installation
Pipe should be free
of obstructions
such as weld seams
The maximum
level (100% of
Span) is inside the
Blanking Distance