System Components and Parts - Isotope Sources

SenTek Sealed Isotope Sources for New and Old Gauges

SenTek provides new and replacement isotope sources for beta and gamma thickness gauges. Our sources include Device Labels and Storage Cover/Shield. We currently offer two different isotopes in two different strengths each.

Sr-90 Sealed Source 300mCi / 11.1GBq

This source is normally provided as a replacement for older decayed Sr-90 beta sources.

Sr-90 Sealed Source 400mCi / 14.8GBq

This source is provided as an upgrade to older 70mCi and 300mCi Sr-90 sources, as well as a high-signal source for new beta gauge installations. The stronger source provides a better signal-to-noise ratio, resulting a 25% reduction in gauge statistical noise. The stronger signal also allows a faster measurement that can breathe new life into an old beta gauge with substantial cost savings over a complete gauge replacement.

Am-241 Sealed Source 1000mCi / 37GBq

This source is normally provided as a low-intensity source for gamma gauges used for inspection lines, slitters, and crop shears where the overall signal-to-noise and measurement speed is less critical.

Am-241 Sealed Source 3000mCi / 111GBq

The higher-intensity Am-241 source is often provided with gauges used for rolling mill gauge control. The stronger signal provides a substantially lower signal-to-noise ratio and allows a much faster measurement speed. This source is also provided as an upgrade to older 1000mCi Am-241 sources when a better signal-to-noise ratio is desired, or a faster measurement is required.

Sealed Source and Radiation Services

Along with our sealed sources, SenTek provides a wide range of radiological and radiation protection services for sealed sources and gauge devices. Click on the link below for more details: