Effect Of Out-Of-Range Input Signals; Figure 10 2500C-8-Tc Example Of Change In Input Level; Figure 11 2500C-8-Tc Effect Of Voltage Input On Type J Thermocouple - Control Technology 2500 Series Installation And Operation Manual

The table below shows the scaling temperature ranges of each probe type.
Probe Type

Figure 10 2500C-8-TC Example of Change in Input Level

1.10 Effect of Out-of-Range Input Signals

The 2559-TC utilizes the underrange and overrange codes of 32766 and 32765,
respectively, to indicate when a channel has reached individual limits. Thermocouple inputs
exceeding the ANSI standard for the different types of thermocouples (listed on the following
pages in Figures 1.4-1.11) will cause the overrange value, 32765, to be displayed and the
maximum temperature for that thermocouple type to be returned. Open thermocouples
report temperatures that are out of the allowable range. This condition may occur due to
failure of the thermocouple or due to the thermocouple wire being cut or disconnected. The
2559-TC will report an open thermocouple condition within 200 milliseconds.
The 2559-TC uses the overrange error code, 32765, to indicate an open thermocouple. An open
thermocouple condition will report within 200 milliseconds.

Figure 11 2500C-8-TC Effect of Voltage Input on Type J Thermocouple

12
J -210 to 760
K -220 to 1320
T -230 to 400
E -240 to 700
R 0 to 1768
S 0 to 1768
N -200 to 1300
NOTE:
Temperature Range
o
C
-346 to 1400
-364 to 2408
-382 to 752
-400 to 1292
32 to 3214
32 to 3214
-328 to 2372
2500C-8-TC Installation and Operation Guide
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F