Endress+Hauser Prosonic S FDU91 - Ultrasound Guide Pipe

Prosonic S FDU90/91/91F/92/93/95/96
Endress + Hauser 15
Ultrasound guide pipe In narrow shafts with strong interference echoes, we
recommend using an ultrasound guide pipe (e.g. PE
or PVC wastewater pipe) with a minimum diameter
of 100 mm (for FDU91). Make sure that the pipe is
not soiled by accumulated dirt. If necessary, clean the
pipe at regular intervals.
A: venting hole
A