The unit is capable of monitoring voltage, current and wire feed speed or temperature.

Arc Current Monitored using a Hall Effect probe. It is possible to monitor both DC and AC current waveforms. The average value is calculated from the mean (rectified) value. Arc voltage The arc voltage should be measured as close as possible to the arc. If this is not done the voltage drop across the welding leads will be recorded as well as that across the arc. However, it is standard practice to measure the arc voltage at the wire feed unit for MIG welding.

Wire feed The wire feed speed is recorded as the average value. A tachometer is mounted directly on the wire. Temperature Monitored using a k series thermocouple. This is an option and can replace the wire feed channel. Calculated values The following values are automatically calculated and presented in the weld summary: · Average welding parameters (I,V,WFS) · Heat input (no process efficiencies)