HT instruments HT4016 - Manual (Page 14)

HT4014-HT4016
EN - 13
4.3.4. DC Current measurement (HT4016 only)
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.
Correct Incorrect
Fig. 7: Use of clamp during DC current measurement (HT4016 only).
1. Select “
A ” position.
2. Check if the display shows zero in advance. If the display doesn’t show zero, press
ZERO key. If current value is over 40A press R-H / key to select 400A range before
zeroing operation.
3. Open the clamp and put the tested conductor in the center of the clamp jaw (ref.
paragraph 4.1.2.) taking care to comply with the current flow shown in the label placed
inside the Inductive clamp jaw and indicates in Fig. 7.
4. The current value will be indicate on the display with automatic detection of the
appropriate range.
5. Pressing the R-H / key you can select manually one of the following ranges. Press
the R-H / key more than 1second at least to come back to AUTOMATIC range
selection.
6. 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.
7. 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.
8. 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.
Current direction Current direction