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.

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