172-65639M-01 (EF200) 13 Apr 2018
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3.3.5 Pipeline Heat Insulation
Caution!
When insulating, please ensure that a sufficiently large area of the housing
support is exposed. The uncovered part serves as a radiator and protects the
electronics from overheating (or undercooling).
The maximum insulation height permitted is illustrated in Figure 7 (marked
“max.” with a limiting line). These apply to both the compact version and the
sensor in the remote version, as well as all installation orientations.
3.3.6 Minimum Maintenance Space
When servicing, it is necessary to
remove the transmitter housing from the
housing support.
When installing in the piping, be sure to
secure the following cable lengths and
minimum maintenance space:
•
Minimum maintenance space in all
directions: A = 100 mm
•
Cable length required: L + 150 mm
Caution!
Removing the transmitter from the housing support is to be carried out by
qualified TLV appointed service personnel only!
3.3.7 Ensuring accurate measurements
In some cases where steam is mixed with condensate, it may not be possible
to obtain accurate flow rate measurements.
To remove these causes for concern about flow rate measurements, it is
recommended to install a separator upstream of the flowmeter.
Saturated steam
without droplets
Wet steam
with droplets
50
×
D
Figure 8
Minimum spacing for
mounting and removing
the transmitter housing
Caution!
Figure 7
Pipeline insulation
flangeless/flanged
version
Caution!
