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BH3084个人剂量仪概述
BH3084个人剂量仪是采用单片机技术制作而成的智能型仪器,用来监测Χ射线和γ射线对人体照射的剂量当量率和剂量当量,有设置阈值和阈报警功能。该仪器主要技术指标符合标准和国际标准,广泛适用于辐照站、海关、工业无损探伤、核电站、核潜艇、同位素应用和医疗钴治疗等领域。
BH3084个人剂量仪仪器特点:
- 灵敏度高,工作稳定;
- 监测剂量当量率和剂量当量;
- 功耗低。
BH3084个人剂量仪仪器外形说明:
BH3084个人剂量仪技术指标:
- 探测器:GM计数管;
- 能量响应:<±30%(50KeV—1.3MeV);
- 剂量率响应:0—∞;
- 量程:
剂量当量率:00.01uSv/h—01.00mSv/h;
剂量当量: 00.01uSv—99.99mSv;
- 测量时间:5s;
- 相对误差:<±20%(137Cs);
- 报警阈值:可设置;
- 电池欠压指示:当电池电力不足时仪器停止工作,液晶显示缺电;
- 电源及功耗:两节5号电池,功耗<2mA;
10、温度特性:<±10%(—10℃—+40℃);
11、湿度特性:<±15%(95%RH(+40℃));
12、外形尺寸:118(长)Χ65(宽)Χ25(厚)mm;
13、重量:<100克;
五、使用方法:
打开电池盒盖,电池按正负极性装入盒内,仪器自动复位并显示00.08 uSv/h。
按模式键可切换显示剂量当量和剂量当量率。
在开机状态下按电源键数秒可关机,在关机状态下按电源键数秒可关机。
按设置键可进入设置状态,首先设置剂量率阈值,按模式键可修改各位数字,按设置键进入下一位设置。按六次设置键可设置剂量当量阈值,同设置剂量率阈值,按模式键可修改各位数字,按设置键进入下一位设置。按11次设置键可进入设置有无声状态,按模式键可选有声或无声。设置完有无声再按设置键可回到工作状态。
在自然本底条件下,每分钟响20~30次,证明仪器正常。
- 电力不足时,仪器停止工作,液晶有“缺电”字样闪烁,这时应更换电池并记录剂量值。
六、参考:
放射性职业人员剂量限值为:有效剂量5年100msv,平均每年20msv,但任何一年不能过50msv。
居民的剂量限值为:每年为5msv(如果连续五年平均值不过5msv,个别年度可以略高)。
1sv=100rem≈100R
1usv/h≈100uR/h
BH3084DOSE METER
BH3084 dose meter is a intelligent meter which is controlled by a new-style single chip. And it is principal for detecting dose and dose rate of Χ and γ radiation. It can set thresholds. It can send out alarm signal overing the alarm thresholds. It is mainly used in the fields of radiant workstation、CIQ、industry nondestructive flaw detection、nuclear power plant、isotopic application and 60Co radiological medical treatment.
FIGURATION:

CHARACTERISTICS:
1、Detector: GM counter tube;
2、Energy response: <±30%(50KeV—1.3MeV);
3、dose rate response: 0—∞;
4、Measurement range:
Dose rate: 00.01 usv/h—01.00 msv/h;
Dose: 00.01uSv—99.99mSv;
5、Measurement time: 5s;
6、Relative error: <±20%;(137Cs);
7、dose rate and dose alarm thresholds: set;
8、Battery under voltage indication: it stops working and displays low power;
9、Power supply and Power consumption: two pieces of AA batteries power consumption <2mA;
10、Temperature: <±10%(-10℃~+40℃);
11、Humidity: <±15%(95%RH +40℃);
12、Size: 118Χ65Χ25mm;
13、Weight: <100g;
OPERATION:
Battery loading and counting reset:
Open battery box cover and put 2 AA batteries in it auto rest and display 00.08usv/h.
Change work mode:
setting mode switch it displays dose rate or dose.
Turn on or turn off power:
Setting power switch turning off it turns on turning on it turns off.
Set:
Setting set switch it can set thresholds of dose and dose rate. In the mode of setting dose rate set mode switch can change every number of dose rate. In the mode of setting dose set mode switch can change every number of dose. In the mode of setting sound set mode switch can change have sound or no sound.
Self-test
Under background level condition alarm 30 times every second, it’s good to work.
Meter stops work and displays low power when it is low power. It’s time to replace the batteries and record dose.
DOSE VALUES REFERENCES
1) According to recommendations of ICRP publication 60:
The dose limination of occupational people is following Effective dose limit is 100 msv for 5 years average value for one year is 20 msv the value of 50 msv can not be over for any one year.
Annual dose limitation for residens is 5 msv.
2) Relation formula of irrediation dose and dose equivalent:
1sv=100rem≈100R
1usv/h≈100uR/h