Amprobe ACD-51HP Power-Quality-Clamp-Ons - Manual (Page 19)

ACD-51HP - ACD-56HPQ
4.3.5. AC current measurement
WARNING
Before attempting any measurement disconnect all the test leads from the
circuit under test and from the meter's input terminals.
CORRECT INCORRECT
Fig. 9: AC current measurements
1. Select the “
A
” position.
2. Open the jaws and clamp only one cable. Pay attention to the alignment marks (see
paragraph 4.1.2. and Fig. 9). The values of current and frequency are shown on the
main and secondary displays.
3. The symbol "
O.L
" means that the measured voltage is higher than the full scale of the
instrument.
4. If the display is difficult to read, press the D-H key to hold the measured value. To
disable this function press the D-H key again.
5. If the measurement is being performed in a dark environment, press and hold the
key for 1 second to activate the backlight. It automatically turns OFF after 5 seconds.
By pressing and holding the MAX/MIN/PK key at least for 1 second, the instrument
activates the maximum (MAX), minimum (MIN), average (AVG) and peak (PK)
measurements. All of these values are continually updated even if only one of them is
displayed. With a simple MAX/MIN/PK key press the values are cyclically displayed
including frequency (except for peak measurements which maximum value’s frequency is
associated to). To escape this function press and hold the MAX/MIN/PK key at least for 1
second or turn the selector to any other position.
EN - 15