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◆应用领域
环境空气、土壤、水等氡浓度及土壤、建材等氡析出率的测量,可用于地质找矿、辐射防护、核事故监测、辐射剂量评价、地震预报及教学等。
符合的标准/规程
1. GB 50325-2020《民用建筑工程室内环境污染控制标准》
2. GB/T 14582-93《环境空气中氡的标准测量方法》
3. T/CECS 569-2019《建筑室内空气中氡检测方法标准》
◆仪器特点
1. 探测器:钝化离子注入平面硅(PIPS),接触极薄,坚固,低噪声;
2. 泵吸静电收集能谱分析法;
3. α 能谱分辨率好、灵敏度高,谱图实时显示;
4. 测量响应快,恢复时间短;
5. 恒流采样,气量采样;
6. 体积小,重量轻,便于携带;
7. 功耗低,交、直流两用;
8. USB数据传输接口,测量数据蓝牙打印。
◆技术指标
1. 测量对象:Rn-222(氡)、Rn-220(钍)
2. 灵敏度:≥ 0.017 cpm/[Bq·m-3] (0.63 cpm/[pCi/L])
3. 本底值:≤ 0.03 cpm
4. 探测下限:≤ 2 Bq/m3
5. 测量范围:
(1)环境空气氡:(2~999999) Bq/ m3
(2)土 壤 氡:(300~999999) Bq/ m3
(3)水 中 氡:(0.002~999.999) Bq/L(选配)
(4)氡析出率:(0.001~33.000) Bq/[m2·s] (选配)
6. 测量不确定度:≤ 10% (K=2,氡室浓度2000 Bq/ m3,温度25℃)
7. 稳定性:相对误差 ≤ 10% (8h)
8. 操作模式:单点测量或连续监测
9. 数据存储:10000组测量结果及谱线数据
10. 取气方式:主动泵吸式
11. 电 源:锂离子充电电池/交流电,电池供电可连续工作30h
12. 显示器:LCD液晶显示
13. 工作环境
(1) 温 度:(-10 ~ +50)°C
(2) 相对湿度:≤ 90% (+40°C)
14. 外形尺寸和重量
主机:(330 × 210 × 170) mm 3.7 kg
◆仪器认证
中国计量科学研究院检定并出具检定证书
注:仪器标配为测量空气氡和土壤氡配件,氡析出率和水氡测量功能为选配功能
配置
1)仪器主机一个。
2) 电源线一根。
3)蓝牙打印机一个,打印纸2卷。
4)土壤取样器一套:含钢钎一个,取样器一个,连接软管两根,干燥塔一个。
5)仪器说明书一份。
6)证书一份。(选配)
7)析出配件一套。(选配)
8)水氡配件一套。(选配)