Weld Monitor - Introduction

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The Weld Monitor combines precision electronics with a novel technique to measure and monitor the repeatability of a spot welding process.

The unit precisely measures and captures the amount of electrical heat energy delivered to a spot welding joint and compares this to a user defined setting. If the heat energy is too high or too low, as set by the user, then the unit indicates this in a number of ways.

The weld monitor can be configured to do this using a current sensor measurement only, or using both voltage and current measurements.

The monitor operates rather like a radio tuned to a favourite station. All the user need do, is perform a few exemplary welds and set the range and level controls accordingly. Thereafter the control settings provide a numeric “program” definition for reference and the monitor remains set at monitoring and expecting repeatable process measurements. If you change your welding program, you simply change the settings.

Weld Monitoring : Current and Energy Signals

The Weld Monitor Unit captures the total electrical heat energy and compares this to the user setting.

Excessive variations in the heating energy are indicative of a process problem or problems and are indicated to the user and/or an automation system on a weld by weld basis.