Detection unit BDZB-100L is intended for measuring the level of pollution of surfaces polluted by beta- active substances.
Output signal is a sequence of normalized, statistically distributed pulses, contains measurable data about density value of the flow of beta radiation where the block is located.
| Area of the detector sensitive surface, cm2 |
30,0 |
| Sensitivity* |
(0,3±0,05) imp∙s-1 for 1 min-1∙sm-2 |
| Energy range of the registered beta-emission, MeV |
from 0,12 to 3,0 |
| Registration efficiency (2π)*, % |
45,0 |
| Own background, с-1 |
2,0 |
| Type of the detector |
Geiger-Muller Counter, SI-8B |
| Upper limit of the measured density of beta-emission flow*, min-1·sm-2 |
1,0·104 |
| Sensitivity to background gamma-emission, |
No more than 5,0 imp∙s-1 for 1 mk3v/h |
| Overall dimensions, mm |
Ø 88 х 80 |
| Mass, kg |
0,4 |
| Connecting cable length, m |
1,5 |
| Note* – emission of 90Sr+90Y radionuclides | |
ELECTRICAL CHARACTERISTICS
Power supply – DC voltage from 7.0 to 12,6 Vv. The consumed current is not more than 30 mA.
Designation of the joint contacts (plug RS -10) of the block.
 |
Contact |
Signal designation |
Commentaries |
| 1 | + Uп | 7,0 – 12,6 В | |
| 4 | Output | rectangular pulses with duration of (1,5±0,5) mks
00 – Negative; amplitude – 5 В 01 – Positive; amplitude – 5 В 02 – Negative; amplitude – U пит 03 – positive; amplitude – U пит. |
|
| 9 | ┴ | Screen is connected to contact 10 | |
| 10 | ┴ | General is connected to contact 9 |
