Understanding Remote Amperage Control
Remote amperage control allows TIG welders to adjust welding current during the welding process without stopping or reaching for the power source. This capability is essential for many TIG welding applications where heat input must be varied to accommodate changing joint geometry, position, or heat buildup.
Starting at lower amperage prevents burn-through, then increasing current for the main weld, and tapering down at the end to fill the crater—all without breaking the arc.
Types of Remote Amperage Control
Foot Pedals
Foot pedals are the most common remote amperage control for TIG welding. The pedal works like a car accelerator—press down to increase amperage, release to decrease. Advantages: hands-free operation, intuitive control, wide range of adjustment. Best for bench welding, positioner work, pipe and tube welding.
Fingertip Controls
Fingertip controls mount on the TIG torch and allow thumb or finger adjustment of amperage. Advantages: no foot pedal needed, good for out-of-position welding, portable. Best for field welding, confined spaces.
Torch-Mounted Switches
Some torches have simple on/off or amperage selection switches. Simple and reliable but limited or no variable control.
Wireless Controls
Wireless remote controls eliminate cables between the control and power source. Advantages: no control cables, greater freedom of movement. Best for large work areas.
Selecting Remote Control Type
Bench Welding: Foot pedal is ideal—comfortable, intuitive, and precise.
Field/Construction: Fingertip control or wireless may be better—no need to position pedal.
Out-of-Position: Fingertip control—foot pedal often inaccessible or awkward.
Using Remote Control Effectively
Starting the Arc: Position tungsten, start with pedal released, initiate arc, gradually increase.
Welding: Reduce amperage as joint warms, adjust for position changes, increase for thicker sections.
Ending the Weld: Gradually release pedal to reduce current, fill crater, maintain post-flow.
Maintenance and Care
Keep pedals clean, protect cables from damage, store in dry location, periodically inspect for wear or damage.
Conclusion
Remote amperage control is a defining feature of TIG welding that enables precise heat management and high-quality results. Select the control type that matches your welding position, application needs, and budget.
