Digital Geiger Counter

POCKET SIZE DIGITAL GEIGER COUNTER 1 ) Specification  :  ITEM DESCRIPTION LCD Display 4 Digital numbers Reference Icons 4 levels of reference icon Audio On / Off switch Detector GM-tube with Ne+Halogen (SBM20) Radiation Detected Beta, Gamma Countable Pulse Resolution & Range 6 CPM - 3500 CPS Equivalent dose rate measurement rage of gamma radiation  ( CPM ) 0.06 ~ 500 uSv/h Permission error limits of gamma radiation Equivalent +-25% Gamma-radiation dose rate data collecting range 0.0595 ~ 3.0Mev Permission error limits of Cs-137 radiation Equivalent +-15% Energy range of registered beta-Particles Mev 0.5 ~ 3.0 Operating temperature From -1 to +50 degree Humidity upto 95% at 35 degree Cs-137 Source radioactive aggregate specific activity 0.025 ~ 2220Bq/g Battery life 1800Min ( Running time ) Battey (9V Alkaliine Battery) not exceeding 27x18x48mm Dimensions, Nor more than 60x26x122mm Weight, not more than 200g 2 Main Function :  1 ) Easy and quick operation 2 ) 3 modes      A ) CPM mode (uSv/h) : Gamma-Radiation dose rate Measuring for 60 sec.      It show 4 levels of radiation risk icon during CPM mode   measuring.                   B ) Bq and Bq/g mode ( Bq , Bq/g ) : measuring for 15min. It can save      value and auto  power off. 3 ) Auto power off to save battery power. 4 ) Speaker On/Off slide switch. 5 ) Quality         AION-A7 got a JQA( Japan Quality assurance ) testing certification.        It show good accurate from 0.2 ~ 300uSv/h range. 6 ) Good for JAPAN Traveler and householder.       Pocket size and standby system for 6 months. -- JAPAN ---- 1 ) ???? ????????? GM?(SBM20) ????????????????? ????????????????????????? GM ???????????????????????????????? GM ???????????????Gamma??Beta???????????????? ??????????????????????Gamma?????????????? AION-A7????????????????????????????????????????? ?????????????????????????? AION-A7????????????? 0.1 ~ 0.3uSv/h ????????Co-60??Source??? ??????0.3 ~ 500uSv/h ??????Cs-137??Source?????????? 2 ) Mode.  ??????????????????????????? ????????????????4?????????????       - CPM Mode : ???????????????????????????????????                        ?????????? ?? : uSv/h       - Bq Mode :   Background radiation???? Bq????????????                         ??????15????         - Bq/g Mode : ???????????? Bq Mode???????????                          ?????????????????????                          ????? 15????????????????????                          Bq/g???? ?? ??????                          ???????????????????                          (AION - A7? Cs &ndash 137 Source????????????) 3 ) Bq and Bq/g Mode : Bq/g ???????????????? ????????????????????????? ????????? Gamma?????? Bq/g ??????????????????? ??????????????????????Bq/g?????????? 15? ?????????????????????? ???????????????????Bq/g????????????????? ??????? Ex ) 0.164Bq/g x 1000 = 164Bq/Kg ? )  Background?????? 0.1uSv?????????????+/- 25Bq/Kg