4
3.2
Height
Sensors
Height
sensors
use
an
ultrasonic
signal
to
measure
distance
to
the
ground
or
crop
canopy.
The
number
of
height
sensors
will
vary
from
a
minimum
of
two
to
a
maximum
of
six
per
system.
Three
height
sensors
are
normally
used.
3.3
Roll
Sensors
Roll
sensors
are
important
for
measuring
boom
and
sprayer
roll
dynamics.
Two
roll
sensors
are
normally
used
for
a
UC5™
Boom
Height
Control
system.
The
mounting
position
of
the
roll
sensors
vary
from
sprayer
to
sprayer
depending
on
boom
geometry
and
suspension.
3.4
Position
Sensors
Position
sensors
are
used
to
measure
boom
suspension
position
and/or
cylinder
position.
The
function
of
position
sensors
may
be
similar
to
that
of
a
pair
of
roll
sensors.
The
mounting
position
of
the
position
sensors
vary
from
sprayer
to
sprayer
depending
on
boom
geometry
and
suspension.
3.5
Modules
Normally
there
are
three
modules
included:
a
control
module,
an
input
module,
and
a
valve
module.
Module
status
is
indicated
by
a
LED.
Shortly
after
power
‐
up,
the
module
should
present
a
solid
green
light,
indicating
the
module
is
functioning
and
ready.
