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FPD350 Torbar
Averaging pitot tubes
6 Troubleshooting
If a malfunction is suspected:
1. Check for leakage between the head of the Torbar and the
transmitter or indicator.
Note. Compared to orifice plates and other primary flow
elements, Averaging Pitot Tubes create small differential
pressures. Therefore test all potential leak points carefully
for leaks.
2. Check for partial or total blockages by testing that
pressure is present at both outlets.
3. Using a reliable differential pressure source such as a
manometer or a calibrated differential pressure cell, check
the actual differential pressure while flow is present.
32
6 Troubleshooting
OI/FPD350–EN Rev. H
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