ELIS PLZE
Ň
a. s.
Design, Assembly and Service Manual
Page 14 of 44
Ultrasonic flow meter SONOELIS SE404X,
SONOELIS SE406X
ELIS PLZE
Ň
a. s., Lucni 15, P. O. BOX 126, 304
26 Plzen, Czech Republic, Phone: +420/377517711, fax: +420/377517722
Es90201K/c
Required straight piping section for a “disturbance” located at the sensor output
In the cases where, in the periods of low flow rate, the fluid level in various parts of the piping may sink, the flow
meter sensor shall be located at a bottom pocket of the piping to ensure full flooding of the sensor at all times.
Flow sensor location at the “bottom pocket” of the fluid piping
If a flow sensor is to be installed in a vertical section of the fluid piping, the fluid flow direction shall always be
upwards.
Sensor installed in a vertical section of the fluid piping
To ensure correct flow rate measurement, the internal section of the meter sensor shall always be filled with the
flowing fluid. Therefore the basic rule to follow regarding the meter sensor placement is to avoid top pockets in
the fluid piping and, in the cases where the sensor is located in a vertical section of the piping and/or near the
place where the fluid leaves the piping system, the flow direction in the sensor should not be downwards.