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WELDEYE
Because of voltage drop and fluctuation in parameters, the measurement values are not
necessarily measured and displayed in WeldEye exactly as they are shown on the welding
machine, but they are still displayed in a meaningful manner and according to welding norms.
Fluctuation and averaging
Welding parameters always fluctuate during the welding. To show parameter data in a useful
format, WeldEye uses averaging to filter out extremes and to show the average graph of the
welding performance. You can adjust the averaging according to your needs in the Settings view.
Voltage drop
In MIG welding machines with long cables (from power source to wire feeder to gun), the voltage
drop can be significant due to electrical resistance. Therefore, welding machine power sources
generate a voltage ("pole voltage") that is higher than the voltage in the welding arc. Therefore,
voltage can be measured either at the poles of welding machine or at/near the arc. WeldEye
always tries to measure the effective arc voltage, but if this is not possible, WeldEye calculates it
based on cable lengths.
It is possible to define the cable length in Smart Reader to compensate for the voltage drop.
When you use WeldEye with Kemppi X8 MIG Welder and Kemppi FastMig X welding machines,
the compensation is done automatically.
Accuracy of measurements
Welding machine power sources often conform to the standard IEC 60974-1, which states that
2.5% accuracy is required when displaying amps and volts. It means that the displayed value must
be within 2.5% of the actual value, measured at the maximum power. For example, for a power
source rated capable of producing 300A, the error may be up to ±7.5A. Therefore, the power
source display may not always show the true value.
Standard IEC 60974-1 and accuracy also applies to WeldEye's Universal Adapters. Thus, there can
be quite a large difference between what the welding machine displays and what the sensors
measure. However, in practice, the error is usually much smaller than what the standard allows.
Welding machines and measurement devices must be validated every two years to ensure they
are still accurate.
3.1.4 Time-keeping
To provide an accurate picture of welding activities, Smart Reader has a built-in real-time clock.
It is used to record the time of weld run starts, stops, parameter samples, and other events. It is
automatically kept synchronized through the cloud service.
Internally, Smart Reader uses global UTC time (Coordinated Universal Time), but adjusts it to the
time zone of the user. The time zone is controlled site-wide in the WeldEye cloud service.
The time is displayed as the user's local time in the Smart Reader's display and in the WeldEye
cloud service. In the cloud service, it is possible to search for weld runs according to the time the
welding took place.
3.2 Connect Smart Reader to the welding machine
OPERATING MANUAL | EN
3.2 Connect Smart Reader to the welding machine
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©
KEMPPI | 2017-12-22
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