Thermo Scientific RadEye B20 Manuals

Radiation Measurement & Security Instruments Thermo Fisher Scientific Messtechnik GmbH, 91056 Erlangen, Frauenauracherstr. 96, Germany, Phone +49 9131 998 0 - DK-021E110419 - Fri/Fro - DK-021E.cdr Short Operation Manual First Responder Kit FOR RADEYE B20/B20-ER 1 (2) The RadEye B20 / B20-ER should be operated at a location with low radiation background. Measurements mode should be performed at different locations for the determination of the best spot for the setup. The RadEye B20 / B20-ER should be operated at a location with low radiation background. Measurements mode should be performed at different locations for the determination of the best spot for the setup. F 1 Set the (t ) of the RadEye B20/B20-ER scaler measurement time Set the (t ) of the RadEye B20/B20-ER scaler measurement time Initial Sample Check: Recommended time t [s] = 300 Initial Sample Check: Recommended time t [s] = 300 m 3 Impact of measurement time can be seen from the formular at the bottom of this page. Extented measurement times (sample and background time) improve the detection limit. Please see the below stated simplified formula. Impact of measurement time can be seen from the formular at the bottom of this page. Extented measurement times (sample and background time) improve the detection limit. Please see the below stated simplified formula. m o Perform a with the RadEye B20 / B20-ER inside the sample holder, at least once per day. Leave the planchet or jar empty and set the RadEye’s background measurement time (t ) to (recommended) and the total counts to 9999. The derived background value must be stored (RadEye Display: Save value Yes). background measurement 1800 s  Perform a with the RadEye B20 / B20-ER inside the sample holder, at least once per day. Leave the planchet or jar empty and set the RadEye’s background measurement time (t ) to (recommended) and the total counts to 9999. The derived background value must be stored (RadEye Display: Save value Yes). background measurement 1800 s  2 Check that the operation mode of the RadEye B20/B20-ER is set to The net result [cps] will be provided directly by the RadEye B20/B20-ER if the function is active. scaler mode. Scaler netto Check that the operation mode of the RadEye B20/B20-ER is set to The net result [cps] will be provided directly by the RadEye B20/B20-ER if the function is active. scaler mode. Scaler netto 4 Simplified formula for the detection limit calculation: Simplified formula for the detection limit calculation: Detection Limit = 3.3 x x + Detection Limit = 3.3 x x + m R t R to o o o R = Background Count Rate [cps] t = Measurement Time [s] t = Background Measurement Time [s] R = Background Count Rate [cps] t = Measurement Time [s] t = Background Measurement Time [s] o m The formula allows the determination of the limit of detection. Increasing t lowers the limit of detection. m Net result [cps] X = F [ Bq / cps] Result [Bq] Perform the sample measurements according to page 2. Verify the actual background radiation level on a regular basis. Calculate the Bq result by using the below stated formula: Perform the sample measurements according to page 2. Verify the actual background radiation level on a regular basis. Calculate the Bq result by using the below stated formula: 5 The calibration factor “F” is typically 5 Bq / cps (approx. 20% Beta efficiency for Cesium and Iodine mixtures). Practical Hints: : Only beta radiation from top layer of liquid is contributing to the measurement result. Please see page 2 for a described measurement procedure with related I-131 calibration factor. Only beta radiation from the top surface facing the detector can be measured. I the sample around and measure again. Liquid samples Solid samples: f appropriate, then turn The calibration factor “F” is typically 5 Bq / cps (approx. 20% Beta efficiency for Cesium and Iodine mixtures). Practical Hints: : Only beta radiation from top layer of liquid is contributing to the measurement result. Please see page 2 for a described measurement procedure with related I-131 calibration factor. Only beta radiation from the top surface facing the detector can be measured. I the sample around and measure again. Liquid samples Solid samples: f appropriate, then turn

Operating Instructions DB-065 E RadEye B20 RadEye B20-ER Multi-Purpose Survey Meter

= Power up 1 x long Display illumination 1 x short 3 x short Radiation Measurement & Security Instruments ON/OFF Activate key lock 1 x long Deactivate key lock Power down Mean and max. count rate information 1 x short Info 1 (2) Thermo Fisher Scientific Messtechnik GmbH - 2010-10-12 - Short Manual RadEye B20 - Rev A. - Ba/Fro - SM_RadEyeB20_V1.0.CDR Function Button Press