Fluke 721-1601, Руководство по калибровке, Страница: 18 / 28

721
Calibration Manual
10
DC Current Measure Verification
To do the dc current measure verification test:
1. Push

repeatedly until mA is shown in the third row of the Product display.
2. Connect the Product red banana jack (V mA) to the Calibrator HI mA output.
3. Connect the Product black banana jack (COM) to the Calibrator LO mA
output.
4. Set the Calibrator for the current setting in Table 5, and verify the display
reading on the Product.
Table 5. DC Current Measure Verification Tests
Applied Current from the
Calibrator
Lower limit Upper Limit
4.000 mA 3.997 mA 4.003 mA
12.000 mA 11.996 mA 12.004 mA
24.000 mA 23.994 mA 24.006 mA
5. Set the Calibrator to Standby.
RTD Measure Verification
1. Push

repeatedly until RTD is shown in the third row of the Product display.
2. Connect the RTD Adapter to the Product.
3. Connect the RTD Adapter Current HI to the Calibrator HI RTD output.
4. Connect the RTD Adapter Sense HI to the Calibrator HI RTD output.
5. Connect the RTD Adapter Current LO to the Calibrator LO RTD output.
6. Connect the RTD Adapter Sense LO to the Calibrator LO RTD output.
7. Set the Calibrator to the 400
Ω
range, output the resistance setting in Table
6, and verify that the display reading on the Product is within the limits.
8. Set Calibrator to standby.
Table 6. RTD Measure Verification Tests
Applied Current from the
Calibrator
Lower limit Upper Limit
84.270
Ω
-40.10
°
C -39.90
°
C
100.000
Ω
-0.10
°
C 0.10
°
C
157.325
Ω
149.90
°
C 150.10
°
C