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Figure 2
Heater Settings
The Heater Settings group contains various methods CT398 Utilities may use to convert heater resistance to temperature.
The different methods are outlined below; only one method is required if this feature is desired by the user. Alternately, the
CT398’s Setpoint may be defined by heater resistance only (See Output Settings), meaning the entire Heater Settings group
may be ignored. Each method is accessed by the tab of the same name. The last selected tab within Heater Settings (Heater
Code, Heater Characteristics, Temperature/Resistance Data, or Equation) defines which method the program uses to convert
resistance to temperatures.
Heater Code:
A string of characters which, if provided with the heater, fully describes the heater’s characteristics. This code
must be received from Minco.
Heater Characteristics:
The heater element composition, base resistance, and optional calibration data points are used to
characterize the heater.
Temperature / Resistance Data:
A set of temperature / resistance pairs are entered and used to characterize the heater. A
minimum of two temperature / resistance pairs are required, although more increases accuracy.
Equation:
Polynomial coefficients are entered and used to characterize a heater. The equation relating heater resistance to
temperature must be known to use this method.