Fluke 5520A - To 110 Mf Capacitance Verification; Capacitance Measurement

Calibration and Verification
Performance Verification Tests
3
3-47
Table 3-28. Verification Tests for Capacitance (cont)
Range Output
Test Frequency or
Current
Lower Limit Upper Limit
1.09999 µF 0.70000 µF 100 Hz 0.69767 µF 0.70233 µF
1.09999 µF 1.09000 µF 100 Hz 1.08693 µF 1.09307 µF
3.29999 µF 2.00000 µF 100 Hz 1.99320 µF 2.00680 µF
3.29999 µF 3.00000 µF 100 Hz 2.99130 µF 3.00870 µF
10.9999 µF 7.0000 µF 100 Hz 6.9767 µF 7.0233 µF
10.9999 µF 10.9000 µF 100 Hz 10.8693 µF 10.9307 µF
32.9999 µF 20.0000 µF 100 Hz 19.9100 µF 20.0900 µF
32.9999 µF 30.0000 µF 100 Hz 29.8800 µF 30.1200 µF
109.999 µF 70.000 µF 50 Hz 69.662 µF 70.338 µF
109.999 µF 109.000 µF 50 Hz 108.529 µF 109.471 µF
329.999 µF 200.000 µF 54 µΑ dc 199.020 µF 200.980 µF
329.999 µF 300.000 µF 80 µΑ dc 298.680 µF 301.320 µF
1.09999 mF 0.33000 mF 90 µΑ dc 0.32788 mF 0.33212 mF
1.09999 mF 0.70000 mF 180 µΑ dc 0.69662 mF 0.70338 mF
1.09999 mF 1.09000 mF 270 µΑ dc 1.08529 mF 1.09471 mF
3.2999 mF 1.1000 mF 270 µΑ dc 1.0933 mF 1.1067 mF
3.2999 mF 2.0000 mF 540 µΑ dc 1.9902 mF 2.0098 mF
3.2999 mF 3.0000 mF 800 µΑ dc 2.9868 mF 3.0132 mF
10.9999 mF 3.3000 mF 900 µΑ dc 3.2788 mF 3.3212 mF
10.9999 mF 10.9000 mF 2.7 mA dc 10.8529 mF 10.9471 mF
32.9999 mF 20.0000 mF 5.4 mA dc 19.8300 mF 20.1700 mF
32.9999 mF 30.0000 mF 8.0 mA dc 29.7600 mF 30.2400 mF
110.000 mF 33.000 mF 9.0 mA dc 32.570 mF 33.430 mF
110.000 mF 110.000 mF 27.0 mA dc 108.800 mF 111.200 mF
3-27. 200 µ F to 110 mF Capacitance Verification
The 5520A calibrator can source capacitance values much larger than what most RCL
meters can measure. The method described below uses a dc current from a precision
current source and a high speed sampling digital multimeter to verify the 5520A
capacitance outputs from 200 µF to 110 mF.
3-28. Capacitance Measurement
By definition, capacitance is the product of an applied current and the ratio of the
charging time to the charging voltage:
v
t
IC
∆
∆
= *