Gamma Radiation Detection Wristwatch

Transcript

Gamma Radiation Detection Wristwatch The Model 1208 Electronic Wristwatch is a unique instrument designed to monitor the ambient radiation situation and personal irradiation level. These instruments can be used by professionals working in the vicinity of radiation sources and by ordinary citizens who are interested in radio-ecology. This watch was designed to provide always-on radiation detection and measurement especially for circumstances when an ordinary hand held radiation meter is not available or could arouse public concern. On the lighter side, the design and functionality of the 1208 make it a great conversation piece. The 1208 provides continuous monitoring of the ambient dose equivalent rate (DER) and ambient dose equivalent (DE), DE accumulation time, and produces an audible alarm when preset DE and DER thresholds are exceeded. Swiss-made quartz clock movement RONDA 763 ensures reliability and accuracy of the watch operation. The LCD features common electronic clock functionality including a calendar and alarm. The up-to-date design is a steel case which ensures water resistance to a depth of 100m. An electroluminescent backlight enables a user to control the instrument in the dark. The CR2032 battery ensures 1 year of continuous operation of the wristwatch. This timepiece keeps track of the current time and date and features both digital and analogue clock faces. These two timepieces function independently of each other, which is useful when traveling. Set the analogue watch to local time and leave the digital watch set to your home time zone. The instrument also has a daily alarm, which can be turned on or off. The radiation detector can be run in digital Direct Reading Dosimeter (DRD) mode or in Survey Meter mode. In DRD mode, cumulative dose is displayed in mSv. In Survey Meter mode, the current dose rate is displayed in µSv/h. Alarms can be set to indicate when a specified dose rate or cumulative dose is exceeded. In addition to the digital (numeric) display, the 1208 has LCD analogue displays which provide a visual indication of the current dose rate and cumulative dose. The full scale readings on the analogue scales are the alarm settings. Berkeley Nucleonics Corporation 2955 Kerner Blvd. San Rafael, CA 94901 415-453-9955 http://www.BerkeleyNucleonics.com Preliminary Datasheet Instrument Specifications Detector Geiger-Muller tube DER registration and indication range 0.01 - 4000 Sv/h DER threshold range Step 0.01 - 4000 Sv/h 0.01; 0.1; 1.0; 10.0; 100 DE registration and indication range (Upper limit of threshold is determined by the life time of the battery being used) 0.001 - 9999 mSv DE threshold range Step 0.001 - 9999 Sv 0.001; 0.01; 0.1; 1.0; 10.0; 100 Accuracy of DER registration (in range from 0.1 to 4000 Sv/h) ±30% Accuracy of DE registration (in range from 0.01 to 9999 mSv) ±25% Energy range 0.06-1.5MeV Power supply CR2032 Lithium battery Period of continuous operation of the indicator from one battery (CR2032) at natural radiation background, no less 12 months Quartz clock movement Ronda 763 (Switzerland) Power supply for quartz clock movement SR 621 SW Period of energy independence of the quartz clock movement (from SR 621 SW battery), no less 36 months Resistant to - excessive water pressure - water resistant Up to 10 bar Up to 100m Operating temperature range 0 ... +45°C Dimensions 50 x 45 x 20 mm Weight (with battery) 95 g Preliminary Datasheet