Detection unit BDZA-100B is intended for measuring the contamination level of extensive surfaces polluted by alpha- active substances.
Output signal is a sequence of normalized, statistically distributed pulses, it contains measurable data about density value of the flow of alpha radiation where the block is located.
It should be used to control palms pollution.
| Area of detector sensitive surface, cm2 |
300,0 |
| Sensitivity* |
(0,96±0,24) imp s-1 on 1 min-1∙sm-2 |
| Registration efficiency (2π)*, % |
20,0 |
| Type of the detector |
ZnS(Ag) on the base layer made of organic glass |
| Upper limit of the measured density of alpha-emission flow*, min-1·sm-2 |
2,0·103; |
| Own background when PED of background gamma radiation is <100 nSv / h, c-1 |
No more than 1,0 |
| Radiation resistance of (MED background gamma radiation) mZv h-1 |
1,0 |
| Unevenness of the sensitivity of the detector surface comparatively to the sensitivity in the center of the detector, % |
No more than 35 |
| Overall dimensions, mm |
Ø230 х 290 |
| Mass, kg |
4,0 |
| Connecting cable length, m |
20,0 (may be increased up to 200 m) |
| Functionality monitoring | Present. A single impulse is formed. |
| Note* – emission of 239Pu radionuclide | |
ELECTRICAL CHARACTERISTICS
Power supply- DC voltage from 5,0 to 12,6 V. The consumed current is not more than 30 mA.
Designation of the joint contacts (plug RS -10) of the block
 |
Contact |
Designation of the signal |
Commentaries |
|
1 |
+Uп | DC voltage from 5,0 to 12,6 v | |
|
3 |
Checking |
When applying a low-level external device a single pulse is formed at the output of the block. |
|
|
4 |
Output |
Output: positive square-wave pulses with an amplitude of about +5, 0 V, duration (5…15) mks; |
|
| 9 | ┴ | Screen is connected to contact 10 | |
| 10 | ┴ | General is connected to contact 9 |
