Front End



The FE03H unit is equipped with the necessary electronic circuitry for conditioning and the AD conversion of current and voltage signal. The RMS and active power values are obtained through digital processing of a dedicated DSP (Digital Signal Processor). The digital output data (16/32 bit) are made available externally via a galvanic isolated RS485 serial bus.

The number of FE03H connected together on the communication bus depends essentially on the power capacity of the master; if the master is a DL01/DL02 datalogger this number is limited to 16.

As each analog channel is individually calibrated with the calibration curve stored in EEPROM, every FE03H is fully interchangeable. The current probe uses a flexible coil suitable for measuring currents with up to 3000 Arms on bundles of wires or large diameter rods.

The communication bus is accessed via an high quality push-pull, each device also makes available an additional connector so to allow a daisy chain scheme with multiple devices. The instrument power supply is provided through the communication bus, there is no battery on board.


Interfacing with DL01


INT11 enables the DL01 datalogger to interface directly one or more FE03/04 devices

Once inserted in DOCK2 of DL01, through its DB9 connector, the INT11 interface provides the access to the RS485 bus through a circular connector compatible with FE03/04 devices. The connector carries the digital signals and the DC power supply enough to handle up to 16 devices simultaneously connected.

The DL02 datalogger may be provided with the INT11 interface onboard.


Example of cascade connection



General specifications


The instrument can measure currents up to 3000 A, voltages up to
600 V and active power of a value up to 1800 kW. The wide measuring range and high accuracy provided by the calibration of each individual electronic device, make FE03H a unique instrument of its kind.


Download FE03H Data Sheet