Catalyst coating weight is the single most expensive variable in CCM and GDE production. Iridium and platinum loading determines cell performance, and every gram applied beyond specification is money coated onto the web and never recovered. Yet most coating lines still rely on offline sampling, which means deviations are detected minutes or hours after they occur.

SCANTECH's Catalyst Coating Weight Measurement System measures the applied catalyst layer directly in-line, on the running web, without contact.

Key features

1. Non-contact measurement of catalyst coating weight on the moving web
2. Low-energy X-ray measuring head, below the threshold requiring radiation protection notification in Germany
3. Traversing or fixed-point configuration depending on line width and layout
4. Continuous CD and MD profile display with alarm limits
5. Interfaces to line control systems for closed-loop coating control
6. Automatic logging of coating profiles for batch documentation

Benefits

1. Reduced precious metal consumption through tighter coating tolerances
2. Immediate detection of coating deviations instead of retrospective sampling
3. Less scrap during start-up and grade changes
4. Complete measurement record per roll for quality documentation and customer audits

Suitable for catalyst coated membranes, gas diffusion electrodes and decal transfer processes in PEM fuel cell and electrolyser manufacturing.