HT instruments HT4016 - Manual (Page 13)

HT4014-HT4016
EN - 12
4.3.3. AC Current measurement
WARNING
• Make sure that all the test leads are disconnected from the meter's
terminals for current measurement.
• When measuring current, any strong current nears or closes to the
clamp jaws will affect the accuracy.
• The instrument is not available for non-sine wave AC signal.
Correct Incorrect
Fig. 6: Use of clamp during AC current measurement
1. Select “ ~A ” position.
2. Open the clamp and put the tested conductor in the center of the clamp jaw (see
paragraph 4.1.2.), considering the connection showed in Fig. 6.
3. The current value will be indicate on the display with automatic detection of the
appropriate range.
4. Pressing the R-H / key (HT4016 only) you can select manually the measurement
ranges the measurement ranges in cyclic order. Press the R-H / key more than 1
seconds at least to come back to AUTOMATIC range selection.
5. The "
O.L
" symbol means that the measured quantity is higher than the selected
range. Press the R-H / key to select a higher range.
6. If the reading is difficult, press the D-H key to hold the obtained value. To exit from this
function press D-H key again.
7. Press MAX/MIN key to activate the saving of Maximum and/or Minimum values of
parameters. Press MAX/MIN key more than 1 second to exit function (see chapter
4.2.5. for details).
WARNING
As the clamp has internal filter it could happen that the meter takes few
seconds to reach 0 value on the display. This is not a defect, indeed the
user can proceed with a test as the temporary displayed value will not be
added to the measured value.