DeltaOHM HD31, Руководство по эксплуатации

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HD31
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V1.6
The probes AP472 S1 and AP472 S2 , plus auction telescoping AST.1 with swivel head, can use
a ∅ 16 mm rigid extension rod. To unscrew the handle (3) hold the probe body at the point
(1). Screw the rod top AP471S1.23.6 (4) on the screw (2). Other extension rods
AP471S1.23.6 can be added. The last element can be the handle (3) or the extension rod
AP471S1.23.7 (5).
Fig. 4.5.8: adding extensions to vane probes
Care and maintenance of vane probes:
Probe performances, especially at the lowest speed, depend widely on the very low friction
with which the propeller rotates around its own axle. So as not to jeopardize this feature, it is
recommended not to force, lock or rotate the propeller with your fingers and not to introduce it
in air flows which could soil it, as far as possible.
4.5.5 AP473S...
MODULES FOR PITOT TUBES
Pitot tube is a simple method for measuring air speed in difficult to access areas (e.g. aeration
ducts) and in the presence of high air speed and temperature. Since there is no air passage
through the Pitot tube, it is particularly indicated for measurements in harsh environments.
Fig. 4.5.9: Pitot tube measuring principle
Hole for total pressure
measurement
Hole for static pressure
measurement
Static pressure
Speed pressure
Total pressure