Installation Instructions - Endress+Hauser Flowphant T DTT31 Operating Instructions Manual

Installation
3.4

Installation instructions

3.4.1 Installation conditions
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.
NOTICE
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
Orientation
• For horizontal pipes: lateral installation.
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.
10
≥10 mm.
i
v
m
Fig. 5: Installation conditions
= 3°
Fig. 6: Correct orientation
DTT31, DTT35
%
1
L
i
A0006976
A0006977
Endress+Hauser