Current Measurements (A) - PCE Instruments F 03 Manual De Instrucciones

3.6 Current measurements
1. Set the selector switch to the "A
2. Clamp the conductor through which the current to be
measured is passing, ensure that the jaws are properly
closed and no foreign body is caught in the space between
the jaws.
In DC measurement, the arrow " " engraved on the jaws
must be pointing in the presumed direction of the current
flow for the sign of the value displayed to be significant.
Range switching and AC/DC selection are automatic. Press
the yellow key to force manual selection of AC/DC if
necessary.
Correction of zero in current measurement (zero DC)
To measure current with a low value, first correct the zero.
- Press the HOLD key and hold down until zero is displayed.
The corrected value will then be saved and deducted from
the value of the current subsequently measured.
Note: this correction is only made to the continuous zero
component. If the value measured is over 6 A, this
correction is inhibited and the value of the correction saved
is reset to zero.
Characteristics
Display range
Measuring range (2)
Accuracy (3)
+ 10 counts
Resolution
(1) In DC, + OL is displayed over +400 A and - OL over -
400 A (600 A in PEAK mode).
In AC, OL is displayed over 400 A rms (600 A in PEAK
mode)
(2) In AC, if the value of the current measured is < 0.15 A,
the display indicates 0.00
(3) With correction of the zero in DC
- Repeatability of the measurement after closing the clamp
several times in succession: 0.3% typical
MIN/ MAX Mode:
- Accuracy: ditto preceding table + 0.2% L
- Capture time: 100 ms typ.
PEAK Mode:
- Accuracy: ditto preceding table +2% L +0.5 A
- Capture time: 500 µs typ. (2.5 ms max.)
(A)
" position
40 A 400 A 4 000 A
0.20 to 40.0 to 400 to
39.99 A 399.9 A 600 A
peak
1.5% L
1.5% L +2 counts
10 mA 100 mA 1 A
30
(1)
30