
87-1
87.1 Introduction
For a variety of reasons, the signal that comes from the output of a sensor will usually need to be pro-
cessed, as has been explained elsewhere. is may be needed for a single sensor alone, as found in the
co
nversion
fr
om
an el
ectronic
re
sistance
te
mperature
se
nsor
in
to
th
e
eq
uivalent
di
gital
di
splay
nu
mber
.
Alternatively and increasingly so, as is now discussed, the outputs from several sensors need to be
combined into a single signal to form a mapping of those sources from “many to one.” An example of
th
is
wo
uld
be wh
en
a se
t
of se
nsors
me
asuring
ma
ny
di
erent
va
riables
is us
ed
to de
termine
if a ma
chine
tool is correct ...