G3 - Heat Input Calculator

If you calculate heat input in the field, you already know the problem. Online calculators are awkward on a job site, spreadsheets are easy to break, and manual calculations take time you do not have during an active inspection.

G3 is a purpose-built heat input calculator for welding inspectors and quality-control professionals.

Enter the voltage, amperage and travel distance. Start the built-in arc timer when the arc strikes and stop it when the pass is complete. G3 calculates the heat input and travel speed immediately, with a live readout throughout the pass.

Built by a working inspector and designed for real field conditions.

BUILT FOR

• CSA W178.2 and CWB welding inspectors
• AWS Certified Welding Inspectors
• CSWIP welding inspectors
• API 510, 570, 653 and 1169 inspectors
• Oil and gas, pipeline and pressure-vessel inspection
• Structural fabrication and shipyard quality control
• Welding supervisors, coordinators and quality personnel

CORE FEATURES

• Built-in arc timer—start when the arc strikes and stop when the pass ends
• Live heat-input and travel-speed calculations
• Root, Hot Pass, Fill and Cap pass selection
• Record multiple passes within the same weld
• Metric and imperial calculations
• Heat input displayed in kJ/mm or J/in
• Save weld records and review previous inspection entries
• Export professional PDF heat-input reports
• Core calculator works offline in remote field locations
• No profile required to use the core calculator
• Free to use

SMARTARC INTEGRATION

Registered users can access SmartArc through the G3 Control Hub. SmartArc is designed to connect with the G3 digital bridge-cam gauge and bring measurement data directly into the inspection workflow.

A free G3 profile is required to access SmartArc, saved inspection records and connected-gauge features.

BUILT FOR THE FIELD. READY FOR WHAT COMES NEXT.

G3 is the foundation of a growing quality-control documentation platform. Planned development includes expanded job histories, welder profiles, credential-specific documentation and deeper integration with SmartArc inspection hardware.

The core heat-input calculator will remain free.

WHAT INSPECTORS ARE SAYING

“Best heat input calculator ever. After using a number of heat input calculators in the field, I stumbled across G3. What a blessing in the field—usable offline, able to add welders for future projects, and the ability to speak to the developers to make suggestions. It’s the all-in-one tool needed for the inspection realm.”

— 5-star App Store review, Canada