Borehole scintillation radiometer SRP-20 − the most advanced version of well-known logging radiometers SRP-97K and SRP-68-02/03 and their analogue in terms of functionality and application. The device is designed to conduct gamma-ray logging in wells up to 300 m depth and drillings. The borehole and hand-held (analogue of SRP-68-01, SRP-88 and SRP-97) versions are in series production.
When conducting gamma-ray logging, a continuous curve or chart is recorded, which displays the intensity of gamma radiation in nSv/h. Due to natural absorption by host rock, ionizing radiation from rocks and objects within a radius of up to 30 cm from the scintillation detector is recorded.
Why SRP-20?| 
		 Measurement range of exposure dose rate of gamma radiation  | 
	
		 0 ÷ 3 000 nSv/h  | 
| 
		 Fundamental error of measurement of exposure dose rate of gamma radiation of 226Ra radionuclide  | 
	
		 no more than ±15% (not standardized in the measurement subrange 30 nSv/h)  | 
| 
		 Measurement range of the average count rate of recorded gamma  | 
	
		 0 ÷ 10 000 s-1  | 
| 
		 Fundamental error of measurement of average count rate of recorded gamma  | 
	
		 no more than ±10%  | 
| 
		 Energy range of detecting gamma  | 
	
		 35 ÷ 3 000 keV  | 
| 
		 Variation limit of averaging window  | 
	
		 1 ÷ 20 s  | 
| 
		 Setting time of operating mode  | 
	
		 no more than 1 min  | 
| 
		 Power supply voltage  | 
	
		 12.5 ± 2 V  | 
| 
		 Average power  | 
	
		 0.9 W  | 
| 
		 Life time of power supply  | 
	
		 no less than 25 h  | 
| 
		 Operating temperature range  | 
	
		 -40 ÷ +50 ˚С  | 
| 
		 Dimensions  | 
|
| 
		 - detection unit  | 
	
		 36 × 1010 mm  | 
| 
		 - measuring console with power supply  | 
	
		 200 × 90 × 145 mm  | 
| 
		 Interfaces  | 
	
		 USB, Bluetooth  | 
| 
		 Weight  | 
|
| 
		 - detection unit  | 
	
		 2.5 kg  | 
| 
		 - measuring console with power supply  | 
	
		 2.6 kg  |