Page 4 of 20
PTU5x
- Mechanical installation
2.3.4 Reference pipe installation
Disturbing factors that may influence the level measurement in liquids, as for example:
- foam presence on the product surface (Fig.12)
- internal structures presence in the tank (Fig.13)
- presence on the liquid surface of floating bodies (Fig.14)
can be avoided with the use of level measurement inside of pipes (by-pass pipe or calm pipe with 100mm min.
diameter for PTU50-51, or 125mm min. diameter for PTU56
)
The pipe must have a length greater or equal than the empty distance, also, must have some of vent holes
(Fig. 14-A) to allow the pipe regular filling and emptying.
In the programming menu, to the “
PRODUCT
” parameter, must select the “
LIQUID PIPE
” option (see page 7 or 11)
2.3.5 Agitators presence
The level measurement is possible thanks to the
Auto-Tuned
statistical filter.
Should rarely need to adjust the filter setting by editing 2
PTU50-51-56
sensor
programming parameters:
-
FILTER
; this parameter is present in the
Quick Setup
menu (page 8)
and in the Advanced Configuration “
SETUP
” menu (page 11);
increasing the parameter value, decreases the sensor sensitivity to the
level measurement sudden variations.
-
F-WINDOW
; this parameter is present in the Advanced Configuration
“
SERVICE
” menu (page 18); decreasing the parameter programmed
value, increases the sensor immunity to false echoes.
Fig.12
Fig.13
Fig.14
Fig.14-A
Fig.15
2.3.6 Mechanical installation accessories
Fig.16
