3. Wiring
When making 4-wire half bridge measurements, the 4WPB is connected to adjacent H and L
terminals to perform a differential measurement. The sense wires from the PRT (indicated by
dashed lines in
(p. 3) are connected to a second pair of H and L terminals to perform
a differential measurement. The black excitation wire is connected to an excitation terminal. In
the following example, the 4WPB is connected to the 1H and 1L terminals, and the PRT to the 2H
and 2L terminals. The excitation wire is connected to the VX1 terminal.
FIGURE
3-1.
Wiring
for
example
program
The
terminal
spacing
of
the
GRANITE
6
and
GRANITE
analog
ue
input
module
is
different
than
other
data
loggers.
The
terminal
input
modules
are
still
compatible,
but
the
pins
must
be
gently
bent
inward
a
small
amount
to
allow
the
terminal
input
module
to
be
mounted.
It
is
still
possible
to
use
terminal
input
modules
in
adjacent
terminal
blocks
if
the
modules
are
staggered.
This
is
done
by
gently
bending
one
module
forward
and
the
next
terminal
backward
enough
to
clear
the
first
module.
Continue
to
alternate
the
modules
as
needed.
4WPB100, 4WPB1K PRT Bridge Terminal Input Modules
3
