User manual

Making Measurements 2
Measuring Capacitance
U1190A Series User’s Guide 43
Measuring Capacitance
This measurement function is applicable for U1192A,
U1193A, and U1194A models only.
Set up your clamp meter to measure capacitance as shown
in Figure 2- 18. Probe the test points, and read the display.
Figure 2-17 Capacitance display
CAUTION
To avoid possible damage to the clamp meter or to the equipment
under test, disconnect circuit power and discharge all high-voltage
capacitors before measuring capacitance. Use the DC voltage function
to confirm that the capacitor is fully discharged.
NOTE
The clamp meter measures capacitance by charging the capacitor with a
known current for a known period of time, measuring the resulting voltage,
and then calculating the capacitance.
NOTE
For measuring capacitance values greater than 1000 F, discharge the
capacitor first, then select a suitable range for measurement. This will
speed up the measurement time and also ensure that the correct
capacitance value is obtained.
U119XA UG.book Page 43 Thursday, September 15, 2011 4:03 PM