RUN
CAL
Applications with Standpipes
In many solids and liquid applications, access to the vessel must be made via a
standpipe. In such cases, Milltronics can provide flange mounted transducers that will
readily mate to the standpipe (refer to Figure 4).
The maximum standpipe length that can be used without additional near blanking (P-5
not greater than 0.3 m) is 200 mm (8"). For greater standpipe lengths, up to 30" long,
near blanking must be extended to 150 mm (6") beyond the end of the pipe.
The preferred dimension when selecting a standpipe arrangement is a 100 mm (4") dia.
pipe, 300 mm (12") long. Near blanking would be set at 460 mm (18").
Example 7
Referring to Example 4, if the transducer were mounted to a 150 mm dia. flanged
standpipe 0.5 m long, instead of a 1 m dia. manhole, the following will be required:
select:
P-5 enter “.65”, near blanking
0.50 m (standpipe length)
+0.15 m (blanking past pipe)
0.65 m total blanking distance
press:
to re-enter run mode.
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PL-399 6 – 44
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