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CO= 80C
Cut-out set-point
To change the cut-out set-point press “UP” or “DOWN”.
CO= 70C
New cut-out set-point
To accept the new cut-out set-point press “SET”.
S
Accept cut-out set-point
The next function is the configuration menu. Press “EXIT” to resume display
-
ing the well temperature.
8.11 Controller Configuration
The controller has a number of configuration and operating options and calibra
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tion parameters that are programmable via the front panel. These are accessed
from the secondary menu after the cut-out set-point function by pressing
“SET”. There are 5 sets of configuration parameters—probe parameters, oper-
ating parameters, serial interface parameters, IEEE-488 interface parameters,
and controller calibration parameters. The menus are selected using the “UP”
and “DOWN” keys and then pressing “SET”.
8.11.1 Probe Parameters
The probe parameter menu is indicated by,
PrObE
Probe parameters menu
Press “SET” to enter the menu. The probe parameters menu contains the pa
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rameters, R
0
and ALPHA, DELTA, and BETA which characterize the resis
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tance-temperature relationship of the platinum control probe. These parameters
may be adjusted to improve the accuracy of the calibrator. This procedure is ex
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plained in detail in Section 10.
The probe parameters are accessed by pressing “SET” after the name of the
parameter is displayed. The value of the parameter may be changed using the
“UP” and “DOWN” buttons. After the desired value is reached press “SET” to
set the parameter to the new value. Pressing “EXIT” will cause the parameter to
be skipped ignoring any changes that may have been made.
8.11.1.1 R
0
This probe parameter refers to the resistance of the control probe at 0°C. The
value of this parameter is set at the factory for best instrument accuracy.
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8 Controller Operation