MJK Automation Shuttle Ultrasonic Level Transmitter and Sensor - Manual (Page 50)

50 GB Shuttle Manual 100316 SW 838023
Appendix
Measuring method (application)
Shuttle
® 's high accuracy is partly obtained by controlling the
strength of the ultrasonic pulse based on the strength of the
received echo. (AP 1)
When performing level measurements on foaming surfaces,
granulate, sludge etc., the received echo is generally so
weak that it would be better to let Shuttle
® send out the
ultrasonic pulses with full strength constantly. (AP 2)
Also, when performing level measurements on surfaces with
very rapid level changes, it can be necessary to moderate
the influence of the learning function (see also page
28 ) to
prevent Shuttle ® from locking on false echos. (AP 3)
Shuttle ® reverts to normal read-out.
Select measuring method with arrow keys.
If 'AP 1' is selected, the ultrasonic pulse will be controlled in
accordance with the strength of the received echo.
'AP 1' should normally be selected for fluid applications.
If 'AP 2' is selected, Shuttle ® will transmit with full strength
constantly.
'AP 2' should normally be selected for sludge / granulate
applications.
If 'AP 3' is selected, Shuttle ® will be better to catch rapid
level changes.
'AP 3' should normally be selected for measuring in sludge
containers, grating matter or other aqueous matter.