Fluke 721-1601, Calibration Manual, Page: 22 / 28

721
Calibration Manual
14
Adjust RTD
Before the adjustment, make these connections:
1. Plug the RTD Adapter into the Product.
2. Connect the high side of the current output (ohms measure) jacks of the RTD
Adapter to the high side of the current input of the Resistance Standard.
3. Connect the low side of the current output (ohms measure) of the RTD
Adapter to the low side of the current input of the Resistance Standard.
4. Connect the high side of the sense jacks of the RTD Adapter to the high side
of the sense output of the Resistance Standard.
5. Connect the low side of the sense jacks of the RTD Adapter sense input to
the low side of the sense output of the Resistance Standard.
To make the adjustment:
1. After you have made your connections, send this command to put the unit in
RTD mode:
FUNC LOWER,RTD
2. Use the Resistance Standard to input 90
Ω
.
3. When the reading is stable send this command:
CAL_POINT[0][0]
4. Use the Resistance Standard to input 140
Ω
.
5. When the reading is stable, send this command:
CAL_POINT[0][1]
6. The RTD range is now calibrated. Use the Resistance Standard to verify
calibration.