The Exa series are microprocessor-based energy meters and energy analysers suitable for harsh environments. Equipped with an RS485 Modbus RTU port. Indication of the phase sequence, four operating time counters in addition to more than one hundred measurements.
The meters are available in versions with digital and analogue inputs – outputs and perform the functions of analyser, counter and multimeter.
The Exa D6, 96 and Exa MID are equipped with an LCD graphic display (dot matrix) with LED backlighting and 2 levels of contrast. Simultaneous reading of 4 parameters and of their symbols with high visibility mode.
The 6-key Joystick keypad (in line for the Exa 96) and the menu column on the display for configuring provide a simple and rational instrument use. In addition the initial page displayed when the instrument is turned on can be defi ned by the user.
On the front panel two red LEDs, for calibration checking, pulse with a frequency proportional to the active and reactive energy imported. Under the sine wave symbol next to the Electrex logo a red LED indicates the operation status, while 2 other LEDs (one red and one green) below the white band indicate the communication activities of the RS485 port.
Measurements in true effective value (True-RMS), obtained by continuously sampling the waveforms of voltages and currents, and the automatic off set compensation of the internal amplifiers ensure maximum precision regardless of the variability of loads over time (ex. spot welders), from the signal level and the environmental operating conditions. The 64-bit resolution also ensures a high accuracy of the energy measurement even in
the presence of small loads (e.g. equipment in stand-by).
