CANBERRA’s Cronos-4 and Cronos-11 Gamma Object/Tool Monitors are the latest additions to the industry standard Argos™ / GEM-5™ / Sirius™ family of contamination monitors.eal for nuclear power plants and fuel cycle facilities, the Cronos-4 and Cronos-11 monitors offer minimum detectable activities (MDAs) comparable to much smaller units, as well as a uniform efficiency response. Cronos operation is straightforward, and the same software is used as the rest of the Argos/GEM/Sirius family to simplify training. The software includes the capability for calibration versus weight and user-definable transmission correction factors for specific activity determination. Based on the robust GEM Gamma Exit Monitor technology, the Cronos-4 monitor has a large internal volume of about 129.5 L (~4.6 cu ft.), while the Cronos-11 has an internal volume two and a half times that of the Cronos-4 at 325.1 L (~11.5 cu ft.). Both monitors contain six large volume plastic detectors arranged to achieve virtual 4 pi gamma contamination monitoring of objects and/or tools placed in them when exiting a radiological zone at a nuclear facility. Cronos monitors are equipped with sturdy door hinges and handles to stand up to rigorous daily use in harsh environments. Removable lead ingot shielding, fork lift tine holes and casters with leveling feet ensure simplified transport and relocation. The monitors are also equipped with a sturdy built-in weighing scale, with removable tray for easy decontamination. A full suite of options are available to complement CANBERRA’s Cronos monitors. Optional Barcode, Proximity or Magnetic card readers may be added to record Personnel and/or Objects along with the contamination data being stored. When optional CRemote software is added, CANBERRA’s family of object and personnel contamination monitors can be networked and monitored from a central location, reducing manpower requirements and ensuring regulatory compliance. Additional information on CANBERRA’s Cronos-4 and Cronos-11 Gamma Object/Tool Monitors can be found at www.canberra.com/cronos. About CANBERRA CANBERRA, an AREVA Company, is the worldwide leader in nuclear measurements. With over 40 years of experience in this field, we bring solutions to our customers, not just products or services.  The key to our success lies in our ability toentify the right customers and understand their needs, in order to bring them value-adding and innovative solutions. In addition, we strive to meet all of the commitments that we make to our customers. For more information, contact: Joanna Lipper Phone: (203) 639-2441 Email: joanna.lipper@canberra.com