Datasheet

Figure 7. 2-wire RTD connection.
In the Debug ADC tab, select the "Convert 5sps" ADC Command from the pulldown menu, Figure 8.
6.1. Click the "Send" button.
6.2. Click the "Read" button in the ADC Registers group box.
The ADC Registers are read back, Figure 8.
6.3. Click the "0%" button on Fluke 724 to select -200°C.
6.4. Repeat 6.1. and 6.2. The ADC Data register should read 0x50F or something close to that value.
6.5. Click the "100%" button on Fluke 724 to select +800°C.
6.6. Repeat 6.1 and 6.2. The ADC Data register should read 0x6697 or something close to that value.
Manually adjust Self Gain and Self Offset registers until the following ADC Data is read (Table 2).
Table 2. Calibration Points for PT100
Fluke 724 RTD Source
ADC Data (hex)
-200.0°C 50F
0.0°C 1B4E
800.0°C 6697
Tip: For -200°C, start adjusting the Self Offset register until it reaches FFFFFFh value and then continue adjusting the SYS Offset register.
After that, set up 800°C and adjust the Self Gain register starting from the 3rd LSB digit until 6697 is read.
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