PICO TA019 Manual de usuario
AC/DC CURRENT CLAMP
OPERATOR’S MANUAL
INTRODUCTION
The AC/DC Current Clamp is an accessory which will allow
your multimeter to measure electrical current up to 600
amperes DC/AC, with a frequency response up to 400Hz.
When measuring current with this clamp, there is no need to
break a circuit or to affect the isolation.
APPLICATION PROCEDURE
1. Insert the black banana plug into the COM jack and the
red banana plug into the V-Ωjack of any multimeter with a
minimum input impedance of 10k ohms.
2. Set the power switch from “Off” to “On” position, the green
LED will be lighting to indicate that the clamp is switched
on. For current measurement below 200 amperes, set the
multimeter range to 200mVAC for AC current measurements
or 200mVDC for DC current measurements. The reading
is directly in amperes. For current measurements above
200 amperes, set the multimeter range to 2V AC or DC,
depending on whether measuring AC or DC current. The
reading is now amperes x1000.
3. Turn the zero adjustment knob on the clamp until the
multimeter reads zero.
4. Clamp the jaws around the current-carrying conductor and
interpret the reading according to Step 2 above.
APPLICATION NOTES
1. In the case of DC current, the output is positive when the
current ows from the upside to the underside of the clamp.
The red banana plug is positive.
2. In the case of DC current measurement, a hysteresis effect
can occur so that it is impossible to zero the clamp properly.
To eliminate this effect, open and close the jaws several
times and then zero again.
3. When there is a strong stray magnetic eld, it is best to zero
the clamp approximately 2 to 4 inches from the conductor to
be measured. The conductor itself will have no inuence at
this distance. Then clamp the jaws around the conductor and
measure the current.
4. A good practice for measuring low currents is to loop an
appropriate number of turns of the conductor through the
jaws. The actual current is the measured value divided by
the number of turns.
BATTERY REPLACEMENT
Remove the screw on the back side, remove the battery, and
replace with a 9-volt battery, NEDA 1604 Type.
SPECIFICATIONS
GENERAL
Captured Conductor Size: 30 mm maximum.
Low Battery Indicator: Red LED lighting.
Operating Temperature: 0°C to 50°C, 70% R.H.
Storage Temperature: -20°C +70°C, 80% R.H.
Weight: 290 gm typical
Dimensions: 178mm (H) × 70mm (W) × 33mm (D).
ELECTRICAL (At 23 ±5°C, 70% R.H. maximum)
Accuracy:
DC Current
0 to 600A, ±(2% reading + 2A)
AC Current (50Hz to 400Hz)
0 to 400A, ±(2% reading + 2A)
400A to 500A, ±(3% reading + 2A)
500A to 600A, ±(6% reading + 2A)
Load Resistance: 10kΩTypical.
Rate Output: 0 to 600mV (AC and DC) for 0 to 600A.
Battery Life: 100 hours typical with carbon-zinc.
P/N: 7000-1351A
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