CIMCO 11 1411 Notice D'emploi page 40

Measuring alternating currents with 400 Hz low-pass filter
The current clamp comes with a 400 Hz software low-pass filter which can be switched on when
needed.
Follow the steps below to measure an alternating current with the low-pass filter.
- Turn on the product using the rotary switch and select the 2A , 20A
range.
- Press and hold the SELECT/V.F.C button (4) for approx. 2 seconds to enable the low-pass filter. You
will hear 3 beep tones and < UFC > will be briefly displayed on the LCD display. < VFC > (D) will
then be displayed on the LCD.
- Proceed with the measurement according to steps 3 to 5 in "Measuring alternating currents (A
- To disable the low-pass filter, press and hold the SELECT/V.F.C button for approx. 2 seconds. You
will hear a beep tone and < End > will be briefly displayed on the LCD display.
Measuring direct currents (A
- Turn on the product using the rotary switch and select the 2A , 20A
range. Briefly press the SELECT/V.F.C button (4) to switch to the DC measurement range. < DC >
and < A > appear on the display.
- Due to the high sensitivity and the ambient magnetic field (e.g. the
earth's magnetic field), a small current will always be displayed when the
current clamp is closed and in the direct current measurement range.
Manually reset the display to zero immediately before each measure-
ment or when the cable is changed.
- Set the display to zero without a conductor and when the clamp is
closed by briefly pressing the ZERO button (9). The zero reset is con-
firmed by a beep tone and < ZERO > will appear on the LCD display.
Briefly pressing the ZERO button will reset the display to zero again.
To disable this function, press and hold the ZERO button for approx. 2
seconds. The < ZERO > symbol disappears. This will take you back to
the normal measuring mode without the zero reset.
- Always ensure the correct polarity of the current clamp for direct current measurements. The
polarity symbols are located on the front and back of the current clamp. The cable from the current
source (+) must run from the front through the current clamp to the load (figure 3).
40
)
or 100A measurement
or 100A measurement
CAT II
600V
CAT III
300V
100A
Figure 3
)".
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