Owner's manual

RTD Input Equipment (T3432)
PD - 6037 Mar - 06 15
Table 1 . Temperature Data Ranges.
Out - of - Range Detection
When the RTD measures temperatures outside of the
operating range listed in Table 1 , the signal is considered to
be out - of - range. The RTD equipment will continue to provide
over - range and under - range readings up to the minimum and
maximum readings shown in the Table.
Also, many open - circuit and short - circuit wiring faults will
cause out - of - range conditions for RTD inputs. In these cases,
the temperature data value is the minimum or maximum
value shown in the Table.
When the signal is out - of - range, the NOSIG bit for the RTD
input is set. In application programming, the NOSIG contact
in ladder logic can be used to sense the RTD out - of - range
condition. For more information, see Programming, starting
on page 23 .
Installation Planning
Accuracy Considerations
Use the following guidelines to maximize overall system
accuracy: