Electrical Connection; Connection Conditions - Endress+Hauser Flowphant T DTT31 Flowphant T DTT35 Operating Instructions Manual

Electrical connection

2. The Varivent® couplings enable flush-mount installation.
4.1.4 Inlet and outlet runs
NOTICE
The thermal measuring principle is sensitive to disturbed flow conditions.
‣
Install the measuring device as far away as possible from any flow disturbances. For further
information → ISO 14511.
‣
Install the sensor upstream from fittings such as valves, T-pieces, elbows etc.
‣
To attain the specified level of accuracy of the measuring device, the inlet and outlet runs
mentioned below must be maintained at the very minimum.
‣
If several flow disturbances are present, maintain the longest specified inlet run.
1
5 × DN
4
15 × DN
 6 Inlet and outlet runs
1 Reduction
2 Expansion
3 90° elbow or T-piece
4 Pump
5 Control valve
6 2x 90° elbow, 2- or 3-dimensional
5 Electrical connection
5.1

Connection conditions

5.1.1 DC voltage version with M12x1 connector
DTT35: According to the 3-A Standards electrical connecting cables must be smooth,
corrosion-resistant and easy to clean.
12
2
3 × DN
5
3 × DN
5 × DN 3 × DN
10 × DN 3 × DN
Flowphant T DTT31, DTT35
3
5 × DN 3 × DN
6
5 × DN 3 × DN
Endress+Hauser
A0023225