Presentation; Description - Chauvin Arnoux E3N Mode D'emploi

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The E3N clamp is a current probe based on a Hall effect cell and intended for use with an oscilloscope;
it can be used to measure direct or alternating current without making any changes to the installation
(without opening the circuit).
It can measure currents from 50mA to 100 Apeak.
It provides 2 ranges and has 2 indicators to report:
„ correct power supply to the clamp, ON,
„ values above the range used (inducing saturation or clipping), OL.
It also has a thumbwheel with which to adjust the zero to match the measurement environment as
closely as possible.
This clamp can be connected to any measuring instrument having a BNC input and an impedance of
1MW, <100pF.
Switch
The switch has 3 positions:
„ OFF: the clamp is not powered.
„ 10mV/A range: measurement of the peak direct or alternating current on the basis of 10mV per
Ampere.
„ 100mV/A range: measurement of the peak direct or alternating current on the basis of 100mV per
Ampere. This range increases the sensitivity of the clamp and reduces the measurement range.
Battery indicator
This indicator is off when the switch is set to OFF. In normal operation, the green indicator is lit. If the
indicator is off when the switch is not set to OFF, either the battery voltage is too low or the cell is no
longer powered because of a clamp fault.
Adjustment of the "zero" of the clamp
The thumbwheel can be used to set the output voltage to zero. This makes it possible to compensate
for various errors due to thermal drift, the earth's magnetic field, the environment, and remanence.
Range exceeded indicator
This indicator, represented by the OL symbol, lights in red when the signal to be measured exceeds the
range limit. It may also indicate the presence of a pulse that exceeds the measurement capability of
the range, or indicate that the measurement made on the clamp is not valid.
Allice Messtechnik GmbH

1. PRESENTATION

2. DESCRIPTION

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