Sentinel Model 880 series source projectors are used for industrial applications of gamma radiography to inspect materials and structures in the density range of approximately 2.71 g/cm3 through 8.53 g/cm3.

SENTINELTM Model 880 Delta, 880 Elite and 880 Omega source projectors are portable, lightweight and compact industrial radiographic exposure devices. The patented device body consists of a titanium ‘S’ tube and cast depleted uranium (DU) shield contained within a 300 series stainless steel tube with stainless steel discs welded at each end forming a cylinder shaped housing. The discs are recessed to provide protection for the rear mounted locking mechanism and front mounted outlet port.

The horizontally oriented design allows the locking mechanism, source assembly connector and outlet port to be easily operated, simplifying connection of source guide tubes and remote controls.

EXPOSURE DEVICE – The exposure device body, containing the DU shield, locking mechanism, outlet port, protective covers and required labels*, comprises the radioactive material transport Type B(U) package.

REMOVABLE JACKET – An impact resistant plastic jacket surrounds the exposure device to protect labels and provide the means for carrying and placement during radiographic operations. The three models are identified by jacket color; yellow for the 880 Delta, blue for the 880 Elite and orange for the 880 Omega.


  • Length: 33.8 cm (13.33 inches).
  • Width: 19.1 cm (7.5 inches).
  • Height: 22.9 cm (9 inches).
  • Weight: 15 kgs.


Isotope: Selenium-75 Iridium-192      Cobalt-60 Ytterbium-169
Assembly Model Number:           A424-25W A424-9 A424-19 91810
Gamma Energy Range:         66-401 keV 206-612 keV 1.17-1.33 MeV 8-308 keV
Half-Life:                                120 Days 74 Days 5.27 Years 32 Days
Aproximate Steel Working Thickness:    3-29 mm 12-63 mm 50-150 mm 2-20 mm
Maximum Source Capacity: 150Ci 3.00TBq 50Ci 0.55TBq 25mCi 925MBq 20Ci 1.11MBq

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