O P E R A T I O N
Introduction to the
Adjustments
C H A P T E R 2
The ADJUST section contains the Adjust knob for entering values, and it contains the ENBL (adjust enable) switch and indicator. In order to make any adjustment, the ENBL indicator must be lit. Pressing the ENBL switch toggles the ENBL indicator on or off.
Display
The display is used to show measurements, output set point, and parameter set points. Whenever a set point is being displayed, the VIEW SET indicator will be lit.
The DISPLAY switch is used to select the measured current (I TE), temperature, resistance, or the set point value. The set point type is determined by the MODE selection. Repeatedly pressing the DISPLAY switch will cycle the display from ITE to temperature to resistance (with thermistor sensors only) to set point and back to ITE, and so on.
When in I TE mode, the set point will be TE current.
When in R mode, the set point will be thermistor resistance in KΩ. R mode is not available if the back panel SENSOR SELECT switch is set to LM335 or AD590. R mode operation may offer improved set point resolution (over T mode), depending on the desired temperature set point.
Note: The resistance set point is NOT maintained if the control mode is changed
(e. g. from R mode to T mode). Also, if the SENSOR SELECT switch is moved from 10 ∝A to 100 ∝A while in R mode, the resistance set point will be rounded to match the display resolution.
When in T mode the set point will be temperature in oC.
When the output is off and a measurement is displayed, if the adjust knob is turned the control mode set point will be displayed for three seconds. If the set point is adjusted (by turning the adjust knob) the set point timer will be restarted. Therefore, three seconds after the set point is adjusted the display will return to the last measurement.
Parameters
The
The
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