Operating Conditions: Installation Instructions - Endress+Hauser Flowphant T DTT31 Technical Information

Long-term reliability
Switch output response time
Analog output
Installation instructions
Orientation
8
Mean time between failure (MTBF) calculated according to SN29500 (at 40 °C)
Low stress environment: <0.1G
High stress environment: >0.1G
100 ms
• Maximum measured error = switch point error and display error + 0.1%
• Rise time T : ≤ 200 ms
90
• Settling time T : ≤ 500 ms
99

Operating conditions: Installation instructions

• 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 only if the pipe is completely
filled with medium.
• For vertical pipes: installation in the ascending pipeline.
• DTT35: min. 3° inclination, because of self draining.
NOTICE
Do not install in down pipes open towards the end.
The sensor tip should never touch the pipe wall.
• Electrical rotation of display by 180°
• Housing can be rotated up to 310 ° mechanically
No restrictions, but self draining.
227 years
48 years
≥10 mm (0.4 in)
i
Installation conditions
Correct orientation
Incorrect installation!
DTT31, DTT35
%
1
v
L
m
i
A0006976
=
3°
A0006977
A0006978
Endress+Hauser