Selecting the right thickness gauge is key to maintaining quality and minimizing scrap. Two common technologies—isotope and laser—each offer unique advantages depending on your material, environment, and accuracy needs.
Isotope Thickness Gauges
Isotope gauges use a low-level radioactive source and detector to measure thickness. They’ve been a proven standard in steel processing for decades.
Best for:
- Harsh mill environments
- Oily, dirty, or scaled material
- Heavy-gauge products
- Lines with vibration or coolant spray
Benefits:
- Extremely stable and reliable
- Minimal maintenance
- Unaffected by surface conditions
Laser Thickness Gauges
Laser gauges use optical triangulation to measure the distance to the strip from above and below.
Best for:
- Thin-gauge materials
- Clean, controlled environments
- High-speed lines
Benefits:
- No radioactive source or licensing
- Very high precision
- Easy installation and setup
Which Should You Choose?
- Pick an isotope gauge if durability and stability in tough conditions are most important.
- Pick a laser gauge if you need ultra-high precision in a clean environment without handling a radioactive source.