Current Measurements (A) - PCE Instruments F07 Bedienungsanleitung

3.6 Current measurements
1. Set the rotary switch to position "A
2. Clamp the conductor carrying the current to be measured,
check for proper closing of the jaws and for foreign bodies
in the gap.
For DC, the " " arrow engraved on the jaws must be directed
in the presumed direction of current circulation for the sign
of the displayed value to be significant.
Range switching and AC/DC selection are automatic.
Actuate the yellow key to force AC/DC or AC + DC selection
manually if necessary.
Correction of the current zero (DC zero)
To measure the low currents, perform a zero correction first.
- Press and hold the HOLD key until zero appears on the
display. The corrected value will then be memorised and
subtracted from the value of the current measured later.
Note: this correction is performed only on the DC
component of the zero. If the value measured is higher
than 6 Α , this correction is stopped and the memorised
correction value is reset to zero.
Characteristics
Display range
Measuring range (2)
Accuracy (3)
Resolution
(1) In DC, the display indicates +OL above +400 A and -OL
above -400 A (600 A in PEAK mode).
In AC and AC + DC, the display indicates OL over
400 Arms (600 A in PEAK mode).
(2) In AC, if the value of the current measured in AC is <
0.15 A, the display shows 0.00.
(3) With correction of zero in DC
- Repeatability of the measurement after several consecutive
closings of the clamp: 0.3% typical
MIN/ MAX Mode:
- Accuracy: same as previous table +0.2% L
- Capture time: 100 ms typ.
PEAK Mode:
- Accuracy: same as previous table +2% L +0.5 A
- Capture time: 500 µs typ. (2.5 ms max.)
(A)
".
40 A 400 A
0.20 to 40.0 to
39.99 A 399.9 A
1.5% L
1.5% L +2 pt
+10 pt
10 mA 100 mA
34
4000 A (1)
400 to
600 A
peak
1 A