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Enter the excitation current for the selected probe in the Current box provided.
The excitation current can be set to any value between 0.0001 and 21.0 mA.
Enter the 3-wire offset value for the selected probe in the 3W offset box pro
-
vided. The 3-wire offset can be set to any value between 0 and 1,000,000 ohms.
Select the conversion type to use for the selected probe. The Model 1575A
Super-Thermometer readout supports the following conversion types:
•
ITS-90
•
IPTS-68
•
CVD (Callendar-Van Dusen)
•
W(T90)
•
R(T)
•
T(R)
•
Polynomial
• Ohms
• Ratio
Refer to the Report of Calibration for the selected probe for information on the
conversion type that the probe was calibrated for.
If the selected conversion type requires coefficients or other settings, the Con-
version Settings button is enabled. Otherwise, the Conversion Settings button is
disabled. Click the Conversion Settings button to display the dialog for the se-
lected conversion type. Please refer to Section 9, Conversion Settings Dialogs,
for a detailed description of the Conversion Settings dialogs.
Note: The conversion settings are not written to the thermometer readout
until the Apply or OK button is clicked on this dialog!
4.4.5 1590 Super-Thermometer II Settings dialog
The 1590 Super-Thermometer II Settings dialog displays information about the
thermometer readout including model number, identification information and
User’s Guide
148
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