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Description
The T723 offers a choice of
J/K/T or E/R/S input ranges
and 2 output ranges, which are
field selectable via top-accessed
DIP switches (see Tables 1-2).
The T723 provides 600 VDC input
to output isolation with outputs
of either 4-20mA or 10-50mA.
The current output is linear
to the equivalent mV thermocouple
signal and non-linear to temperature,
which is useful in data acquisition
systems that utilize linearizing
software. Upscale burnout (maximum
output with an open thermocouple)
is standard.
The
T723 has 80% zero and span adjustability
within any user selected input
ranges shown in Table 1 and
2. For example, Range K1 of
Table 1 specifies 0 to 500 C
with a minimum span of 100 C
(500 -100 = 400 , or 80%). This
80% adjustability allows the
user to field calibrate the
unit from the maximum (0 to
500 ) down to any minimum (100
C) span (e.g. 14 C to 114 C)
as long as that adjusted span
remains within the selected
0 to 500 C range. The same is
true for any user selectable
range: all spans are field adjustable
from 20% (minimum span) to 100%
of the specified range.
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Application
The T723 is useful in any application
requiring isolation of a 2-wire
loop current from a thermocouple
input. Typical applications
include energy management and
data acquisition such as moni-
toring remote boiler temperatures.
The output of the T723 can interface
with a digital meter for direct
display or interface with a
computer for monitoring and
control applications.
The
T723 is FM approved for intrinsically
safe operation in Class I, Division
1, Groups A, B, C, and D; Nonincendive
Class I Division 2, Groups A,
B, C and D, and Classes II &
III, Division 2, Group G hazardous
locations when installed per
manufacturer's drawing 790-0024-00.
Refer to model T805 for NEMA
4, FM/CSA/CENELEC approved explosion
proof, field mount housing.
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