Chapter 10 Appendix2-Insertion transducer
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10.3. Determining transducer spacing& transducer installation
The mounting space of insertion transducer is the center-to-center hole distance
between the two transducers (please refer to Menu 25). After enter the right
parameter, please check the mounting space in Menu 25. (unit: mm)
Mounting method:
1. Drilling at the measuring point, the diameter of the drilling hole is 24mm. Before
drilling, please make the hole center of transducer mounting base aim at the
drilling hole center, and then weld it on the pipe vertically.(When the flowmeter
need to be hot-tapped into the pipe under pressure without flow
interruption,please refer to the Sitelab’ operation construction of DDK electric
Hot-tapping or corresponding equipment.)
2. Close the ball valve and screw it tightly on the mounting base.
3. Twist off the locknut and loose the lock ring, pull the transducer into the joint nut,
and then screw up the joint nut on the ball valve.
4. Open the ball valve and insert the transducer, measure the dimension from the
outer surface of the pipe to the front end surface of handspike position to meet
the following formula:
H=175-d
In this formula:
H is Mounting height (mm);
175 is Transducer length (mm);
d is Pipe wall thickness(mm);
5. Attach the lock ring to the joint nut by fitting its pinhole in the locating pin, then
tighten the screw slightly and turn the orientation handle until it points at the
middle position between the two transducers and its axes matches the axes of
the pipeline. Finally, tighten the locking screw and screw the locating sleeve
onto the joint nut.
6. Connect the transducer cables to the corresponding upstream/downstream
(upstream=red, downstream=blue) terminal ends.
7. Please refer to the following installation diagram:
