“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”.
9.10
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-
rameters, D0 and Dg, which characterize the resistance-temperature relation-
ship of the thermistor control probe. These parameters may be adjusted to
improve the accuracy of the bath. This procedure is explained in detail in Sec-
tion 11.
The probe parameters are accessed by pressing “SET” after the name of the pa-
rameter 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.
9.10.1
D0
This probe parameter refers to the resistance of the control probe at 0°C. Nor-
mally this is set for –25.2290 ohms.
9.10.2
Dg
This probe parameter refers to the average sensitivity of the probe between 0
and 100°C. Normally this is set for 186.9740
9.11
Operating Parameters
The operating parameters menu is indicated by,
PAr
Operating parameters menu
Press “SET” to enter the menu. The operating parameters menu contains the
cutout reset mode setting.
9.11.1
Cutout Reset Mode
The cutout reset mode determines whether the cutout resets automatically when
the bath temperature drops to a safe value or must be manually reset by the
operator.
The parameter is indicated by,
7012 Calibration Bath
User’s Guide
46
