MJK Automation Shuttle Ultrasonic Level Transmitter and Sensor - Manual (Page 48)

48 GB Shuttle Manual 100316 SW 838023
Appendix
Active measuring range
Shuttle
® 's measuring range is normally set automatically to
a distance corresponding to the ultrasonic sensor's distance
to zero level + 45 cm.
It may become necessary to decrease the active measuring
range so it corresponds to the highest and lowest possible
levels in the well /tank - especially if the ultrasonic sensor is
mounted above a steel grating or an opening in a well cover.
In this example, the Shuttle ® 's active measuring range are
decreased from 0,35 cm - 15 m to 1,45 - 3m measured
from the sensor - that is 3,00 m from the bottom to 10 cm
below the grating or cover.
Shuttle ® reverts to normal read-out.
0 m
3,00 m
1,45 m
0,35 m
15,00 m
0 m
Normal
measuring
range
Reduced
measuring
range
(1,35 m)
Set the start distance of the measuring range measured
from the ultrasonic sensor (i.e. the highest possible level).
Set the stop distance of the measuring range measured from the
ultrasonic sensor (i.e. the lowest possible level).