APPENDIX “A” - Application Examples
Plastics Extruder Application
Several TCU controllers are employed to control the temperature of a
plastics extruder. Each TCU controls a h eating element and a cooling water
solenoid to maintain each extruder zone at the desired temperature. The
heater current monitor of the TCU is used for early detection of heater
element failure. The linear DC output is used to retransmit the process
temperature to a control computer for d ata logging purposes.
Figure 41, Plastics Extruder Application
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