BEAMEX FB150 - 5 Controller Operation; Main Screen

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Controller operation
Main Screen
5 Controller operation
This chapter discusses in detail how to operate the Field Temperature Block tem-
perature controller and/or thermometer readout using the front control panel. Using
the front panel keys and liquid crystal display (LCD) the user may monitor the well
temperature, set the temperature set-point in °C or °F, monitor the heater output
power, monitor the stability, set the cutout set-point, set the operating parameters, and
congure the communication interface. For the -R model, the user has full control of
thermometer readout functions of the instrument using the front panel keys and the
LCD. A diagram of the full menu structure can be found in Section 4, Menu Structure,
on page 23. When active, menu keys are selected using the soft keys (F1-F4).
5.1 Main Screen
The LCD on the front panel allows direct viewing of the control temperature (actual
well temperature), reference thermometer temperature (-R model only), heating or
cooling power, stability state, current set-point information, and current program in-
formation. The temperature displayed is either in °C or °F. The displayed temperature
units can easily be changed by pressing the C/F key on the front panel.
HEAT SOURCE TEMPERATURE
This is the temperature of the block as measured by the control sensor. The controller
heats or cools the block to force the control temperature equal to the set-point.
SET-POINT (SETPT)
This is the current set-point.
REFERENCE TEMPERATURE (REF) (-R model only)
This is the temperature measured by an external reference thermometer attached to the
Reference Thermometer 6-pin Smart Lemo input.
CONTROL - STAB (Stability)
This shows the stability of the block. When the stability is within the set limit this line
is at.
CONTROL - HEAT/COOL
This shows the relative heating or cooling power (duty cycle) in percent.
HEATING, COOLING, CUTOUT
This shows the status of heating or cooling or the cutout when activated. The bar graph
indicates the relative heating or cooling power.