Siemens SITRANS FC410 Operating Instructions Manual page 33

3. Horizontal installation, tubes up (recommended for gas applications)
Image 4-5
Note
Hygienic applications
In 3A and EHEDG certified hygienic applications the flowmeter must be installed vertically
as shown in 1 above.
Installation in a drop line
Installation in a drop line is only recommended if a pipeline reduction or orifice with a smaller
cross-section can be installed to create back-pressure and prevent the sensor from being
partially drained while measuring.
①
②
Image 4-6
FC410 with Modbus
Operating Instructions, 02/2016, A5E33120874-AC
Horizontal orientation; tubes up
Back pressure orifice
On / off valve
Installation in drop line
Installing/Mounting
4.1 Flowmeter installation
31