INTRODUCTION
A
simple
push
button
operation
ranges
and
calibrates
the
SEM203P
4
to
20
mA
transmitters
eliminating
the
need
for
soldering
jumpers.
The
SEM203P
in-head
transmitter
incorporates
the
latest
digital
technology
to
ensure
accurate
drift
free
linearization.
It
connects
to
any
standard
RTD
temperature
sensor
and
converts
the
output
to
a
linear
4
to
20
mA
output
signal,
providing
a
level
of
performance
at
a
cost
that
was
not
possible
with
earlier
analogue
types.
High
accuracy
and
stability
with
the
flexibility
of
reduced
stock
and
the
quick
and
easy
way
of
bench
re-ranging
makes
the
SEM203P
the
ideal
choice
for
the
majority
of
RTD
sensing
requirements.
The
SEM203P
is
linearized
to
comply
with
all
common
RTD
sensor
standards
ie
0.00385,
0.003916
etc.
without
affecting
accuracy
as
the
ZERO
&
SPAN
is
set
to
a
particular
sensor
type.
CALIBRATION
PROCEDURE:
- Connect
an
RTD
simulator/calibrator
to
the
input
and
between
8
&
30
volts
DC
to
the
output
of
the
SEM203P.
- Set
the
simulator
to
the
desired
temperature
at
4
mA.
Press
and
HOLD
the
calibration
button
until
the
LED
starts
to
blink.
- Set
the
simulator
to
the
desired
temperature
at
20
mA.
Press
the
calibration
button
and
release.
The
LED
continues
blinking
and
then
shuts
off
confirming
that
the
unit
is
calibrated.
It's
that
simple
and
that
fast.
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