Siemens SITRANS F M MAG 1100 Operating Instructions Manual page 22

Installing/Mounting
4.3 Installation in partially filled pipes
Example:
A flow of 3 m/s (v) in a sensor with a diameter reduction from DN 100 to DN 80 (d
gives a pressure drop of 2.9 mbar.
22
SITRANS F M MAG 1100 sensor
Operating Instructions, 01/2018, A5E03433301-AC
/d = 0.8)
1 2