多功能放射性石材檢測儀
型號：I-ALERT
便攜式多功能輻射檢測儀 、射線檢測儀、核輻射檢測儀、表面污染檢測儀、劑量率儀產(chǎn)地：美 國
I- Alert手持式α、β、γ和X多功能核輻射儀為您提供了快速、精確、便捷的輻射檢測手段。既可做輻射劑量率檢測又能用于表面污染測量，本產(chǎn)品采用GM探測方法，用以監(jiān)測放射性工作場所和表面 ,實驗室的工作臺面、地板、墻壁、手、衣服、鞋的α、β、γ和X放射性污染計數(shù)測量以及環(huán)境劑量率，是一款性價比高的輻射測量儀器。常用于：
1.檢查局部的輻射泄露和核輻射污染；
2.檢查石材等建筑材料的放射性；
3.檢查有核輻射危險的填埋地和垃圾場；
4.檢測從醫(yī)用到工業(yè)用的X射線儀器的X射線輻射強度；
5.檢查地下水鐳污染；
6.檢查地下鉆管和設(shè)備的放射性；
7.監(jiān)視核反應(yīng)堆周圍空氣和水質(zhì)的污染；
8.檢查個人的貴重財產(chǎn)和珠寶的有害輻射；
9.檢查瓷器餐具玻璃杯等的放射性；
10.精確定位輻射源；
11.家居裝飾的檢測。
技術(shù)性能與特點：
1、四位液晶顯示
2、檢測α、β、γ和X射線
3、計數(shù)測量、總計數(shù)測量和劑量率測量
4、1分-24小時定時測量
5、對Cs-137源為5.8Cps/μSv/h;
探測下限：對I-125是0.02微居;
6、效率（4π）：接觸下：對Sr-90源約38%，C-14源約5.3%；P32源約33%；Co-60源約3%
7、G-M 計數(shù)管,有效直徑45mm,云母窗密度1.5-2.0mg/Cm3;
8、精度μSv/h：≤500μSv/h；范圍時≤15%，在500-1000μSv/h范圍≤20%；
CPS：≤2500 CPS范圍時≤15% ，在2500-5000CPS范圍≤20%；
9、測量單位：該檢測儀常用單位（Mr/h或CPM）或SI單位（μSv/h或CPS）
10、測量范圍：
0.001-100mR/hr
0.01-1000μSv/ hr
0-350,000 CPM
0-5000 CPS
0-9999000 總計數(shù)
精 度：±15%
電 源：9V層疊電池
外形尺寸：150*80*30mm
重 量：323g(含電池）
產(chǎn) 地：美國
Handheld Surface Contamination Meter
The Inspector Alert measures alpha, beta, gamma and x-radiation using a 2-inch "pancake" GM detector with high sensitivity to common beta and alpha sources.
The easy-to-read digital display shows readings in your choice of mR/hr, CPM, CPS, or μS/hr. The Total/Timer feature allows timed readings from one minute to 24 hours for precise measurement of low level contamination. An audible alert sounds when the radiaiton reaches a user-adjustable level.
Quickly alerts first responders to the presence of harmful levels of nuclear radiation
Improves safety in the laboratory and in the field
Automatically compensates for GM tube dead time
Will not jam in high radiation fields
Meets CE certification requirements for Europe
Specifications:
Detector: Halogen-quenched Geiger-Mueller tube. Effective diameter 1.75" (45 mm). Mica window density 1.5-2.0 mg/cm2.
Display: 4-digit liquid crystal display with mode indicators
Operating Range: mR/hr: .001 to 100.0
CPM: 0 to 350,000
Total: 1 to 9,999,000 counts
μSv/hr: .01 to 1,000
CPS: 0 to 5,000
Gamma Sensitivity: 3500 CPM/mR/hr referenced to Cs-137
Smallest detectable level for I-125 is .02 μCi at contact
Efficiency: For 4 pi geometry at contact
Beta
C-14 (49 keV avg. 156 keV max.): 5.3%
Bi-210 (390 keV avg. 1.2 MeV max.): 32%
Sr-90 (546 keV and 2.3 MeV): 38%
P-32 (693 keV avg. 1.7 MeV max.): 33%
Alpha
Am-241 (5.5 MeV): 18%
Averaging Periods: Display updates every 3 seconds, showing the average for the past 30-second time period at normal levels. The averaging period decreases as the radiation level increases. User can select fast 3-second averaging period
Timer: Can set 1-10 minute sampling periods in one-minute increments, 10-50 minute sampling periods in 10-minute increments, and 1-24 hour sampling periods in 1-hour increments
Alert: Beeper sounds the alert
User-adjustable alert level is set using three buttons
Accuracy: ± 15% up to 50 mR/hr; ± 20% up to 100 mR/hr
Anti-Saturation: Readout holds at full scale in fields up to 100 times the maximum reading
Temperature Range: -20o to +50o C , -4o to +122o F
Power: One 9-volt alkaline battery; battery life is average 2160 hours at normal background, average 625 hours at 1 mR/hr with beeper off
Size: 150 x 80 x 30 mm (5.9" x 3.2" x 1.2")
Weight: 323 grams (11.4 oz) including battery
I/O Ports: Dual miniature jack for CMOS or TTL devices, sending counts to computer or data logger. Submini jack for electronic calibration.
Count Light: Red LED flashes with each radiation event
Audio: Beeper beeps with each radiation event; can be muted
Options: Wipe test plate
