INTRODUCTION
The SEM205P
is an encapsulated low cost 'Smart' in head
temperature transmitter that accepts PT100 temperature sensors and
converts the output to the industry standard 4 to 20 ma transmission
signal. It can be mounted directly in a connection head of
a sensor assembly, in a separate remote junction box, or on a DIN rail
using optional mounting clips.
The SEM205PX
version carries both FM and CENELEC intrinsically safe approvals when
used with the appropriate barriers.
Ranges and other parameters are easily programmed
using a "Windows™" based software package without the need
for recalibration. If range is not specified at time of
order the default settings are 0-100 ºC, adaptive filtering, Pt100 -
DIN 385, and upscale burnout.
In addition to the standard RTD inputs it is
possible to customize the input range and linearization. This is
done at the factory using the "X" input option.
The "Adaptive" filter function adjusts the
incoming signal to noise ratio in order to achieve the appropriate
level of filtration. A slowly changing signal will be heavily
filtered until there is a sudden change. The filter then quickly
reduces allowing for rapid response. Other filter settings are
off, 2 seconds and 10 seconds.
The user programmable offset along
with the sensor referencing feature allow the sensor and transmitter
to be calibrated together for the best performance.
