Amprobe FLEX3 Current-Transducer - Manual (Page 6)

AMPROBE
FLEX3
4
2. INSTRUMENT DESCRIPTION
2.1. Introduction
Dear Customer, we thank you for your patronage. The instrument you have just purchased
will grant you accurate and reliable measurements provided that it is used according to the
present manual’s instructions.
FLEX3 is an innovative current transducer that combines easy use with measurement
accuracy.
The FLEX3 current probe is similar in purpose to current transformer used to measure
phase currents. The output is voltage signal proportional to the derivate of AC current in
the conductor. The output signal is available via a 3 pin connector (see picture 2 for output
signal pin assignment).
Pin 1 + Output
Pin 2 - Output
Pin 3 Shield
Picture 1
2.2.
Transducer’s functions
The transducer is a versatile current probe that may be wrapped around most conductors.
The transducer has a preset bend that allows the transducer to be more easily maneuvered
around the conductors (see picture 2 for FLEX3 head transducer). It's application versatility
and isolation rating clearly distinguish the FLEX3 transducer from other current measuring
methods. The measuring transducer is constructed from non-ferrous materials, minimizing
any circuit loading due to magnetic influence.
Picture 2
The frequency response of the current probe is rather wide compared to conventional CTs.
This allows the user to monitor a much wider range of line harmonic components than
conventional CTs allow. The FLEX3 transducer was designed to be very flexible, larger in
aperture and smaller in cross section than many conventional CTs. This allows
measurements in tight places as never before possible.