DTT31, DTT35
Installation
Hauser
9
3. 4 Installation instructions
3.4.1
Installation conditions
!
Note!
The sensor requires a fully developed flow profile for correct monitoring. For this reason,
steadying sections (5x DN) must be provided in the pipe after a pump, pipe bend, internal fittings
and cross-sectional changes.
"
Caution!
Do not turn the device into the process connection thread at the housing. Always install the
device at the spanner flats (Fig. 5, item 1). Use a suitable open-ended wrench for this task (see
Table
→
Chap. 3.3.1).
• The onsite display can be rotated electronically 180°,
→
Chap. 5. 1 "Onsite operation".
• The upper housing section can be rotated mechanically up to 310°.
• The sensor tip should be completely surrounded by medium.
• Position the sensor tip in the area of maximum fluid velocity (pipe
center).
• Minimum sensor immersion length: L
i
≥
10 mm.
A0006976
Fig. 5: Installation conditions
Orientation
• For horizontal pipes: lateral installation.
!
Note!
Installation from above(see Fig. 5)
only
if the pipe is completely
filled with medium during operation.
• For vertical pipes: installation in the ascending pipeline.
• Installation of DTT35 by min. 3° inclination, because of self
draining.
A0006977
Fig. 6: Correct orientation
