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Portable Hot Oil Temperature Control Units Page 27
Chapter 5: Using Controls & Indicators
5-1 The Microprocessor Controller
The controller is an easy-to-operate microprocessor-based PID control device. When the
process reaches the set point, the PID control cycles the cooling valve and/or immersion
heater to maintain the proper leaving water temperature.
The controller has been fully factory tested. Set the desired process temperature set point and
the control does the rest.
Built-in range of operation on the controller is 0°F to 550°F (-18ºC to 288ºC).
5-2 Controller Display
Note: Please refer to the M2B Controller manual, part number 682.86666.00 for
complete details.
Figure 3
Typical M2B
Microprocessor Controller
Process Value Numeric LED
During normal operation, the Process Value LED on the controller displays the actual
process temperature at the To Process probe. It also lists parameter symbols during setup and
error messages if an error occurs.