Emerson Micro Motion D Série Notice D'installation page 15

After process piping has been installed and properly supported, refer to
Figure 8 and follow these guidelines when installing the sensor:
• Install the sensor with user-supplied mounting legs, bolts, and lock
washers (six 1/4 inch-20 UNC for a DL65 or DL100 sensor; two 1/4
inch-20 UNC and four 3/8 inch-16 UNC for a DL200 sensor).
• Use appropriate user-supplied gaskets between process fittings on the
sensor and process piping.
Figure 8. Self-draining DL sensor installations for sanitary
applications
4" (101mm)
minimum
Mounted to
4" (101mm)
minimum
Mounted to floor
Level
ceiling
Level
Level
Mounted to
wall
Level
11
4" (101mm)
minimum