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Description
The G428 is a DIN rail mount,
thermocouple input signal condi-
tioner with 1800VDC isolation
between input, output and power.
The field configurable input
and output offer flexible, wide
ranging capability for J, K,
T, R, S, E and B type thermocouples.
The
G428 input can be configured
for over 60 thermocouple temperature
ranges (see Table 6). The output
is linear to temperature and
can be set for either 0-5V,
0-10V, 0-1mA, 0-20mA or 4-20mA.
Wide
ranging, precision zero and
span pots allow 50% adjustablity
of offset and span turn-down
within each of the ranges. For
example, the 0-1000 C range
could be offset and turned down
to provide a 4-20mA signal representing
500-1000 C. Similarly, adjustment
can be referenced to the output
range. The example above could
be used to provide a 12-20mA
signal from a 750 to 1000 C
temperature input.
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Application
Three way isolation in the G428
completely eliminates ground
loops from any source. Isolation
protects expensive SCADA systems
from ground faults and allows
the noise reduction benefits
of grounded thermocouples to
be realized.
The
G428 is equipped with cold junction
compensation (CJC) circuitry
to provide ice-point reference.
Upscale or downscale thermocouple
burnout detection is switch
selectable.
High
density DIN rail mounting offers
an extremely compact solution
to save valuable panel space.
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