HT instruments HT4011 - Manual (Page 16)

HT4011
EN – 15
4.3.8. AC current measurement
CAUTION
Before attempting any measurement disconnect all the test leads from the
circuit under test and from the meter's input terminals.
Fig. 9: Use of the clamp for AC current measurement
1. Select position 40A or 400A
2. Insert the cable in the middle of the clamp jaws, in order to obtain accurate measures.
The display shows the value of AC current.
3. If the symbol “O.L” is displayed, this indicates overload status. In this case, position the
rotary switch to a higher measuring range.
4. To use the HOLD and PEAK functions, please refer to § 4.2.
CAUTION
A possible value displayed with the instrument not in measuring mode is
not to be considered a problem of the instrument and these values are
not added by the instrument while carrying out a real measurement.