TE Technology TC-36-25-RS485 - Manual (Page 23)

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2.2.2 SET TEMPERATURE
Enter the desired set temperature value in degrees Celsius. This temperature must be within both the range of the
selected input sensor and the limits of low and high set ranges from the controller configuration setup. Also, verify
that the cooler is capable of safely operating at the entered set temperature. This is particularly important if you
are heating. While you can control to +100 °C using the standard thermistor, many TE devices are only rated for at
most 70 °C.
2.2.3 CONTROL SENSOR OFFSET and INPUT 2 OFFSET
The temperature sensors on input 1 (primary CONTROL SENSOR thermistor) and input 2 (secondary thermistor)
can be given separate offsets to correct for “errors” in the sensed temperature and the real temperature.
2.2.4 EXTERNAL SET RANGE
Use the HIGH EXTERNAL SET RANGE and LOW EXTERNAL SET RANGE to define the maximum and minimum
allowable set temperature values when using an external input for setting the control temperature.
2.2.5 READ INPUT 2 AS A TEMPERATURE
Enabling this feature configures input 2 the same as input 1. That is, the controller assumes a secondary thermistor
is installed. If you do not have a secondary thermistor installed, do not enable this feature; otherwise, the
controller will assume a sensor error exists.
If you are using two thermistors with the controller, they must have the same resistance versus
temperature characteristics. Also be sure that you have selected the correct sensor type. Otherwise a
dangerous condition could exist because the actual temperature could be higher or lower than the
temperature being interpreted by the controller.
2.3
TEMPERATURE SENSOR
The controller can accept several different types of negative‐temperature coefficient thermistors. Available
options correspond to various temperature‐resistance curves for thermistors as shown in “Temperature‐Resistance
Curves” in the Appendix. Select the sensor type having the same temperature‐resistance curve as the thermistor
you intend to use with the controller: