Products » Radiation Detection » GMP-25 - Alpha/Beta/Gamma probe for RDS-31

GMP-25 - Alpha/Beta/Gamma probe for RDS-31

Part number: 1233-279, 1233-291

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  • alpha/beta/gamma surface contamination measurements
  • converts the RDS-meter into a contamination monitor
  • sensitive for low levels of alpha, beta and gamma radiation
  • suitable for general contamination and frisking
  • cord lengths up to 15 meters upon request

The GMP-25 probe is a 'smart probe' for RDS-31-series of handheld instrument.

Available as
GMP-25 - with fixed spiral cable 30 cm - 1,5 m.
GMP-25i - without cables (order sepratly, see accessories).

Radiation detected: gamma-, beta- and alpha-rays
Energy range: gamma > 6 keV, beta > 100 keV, and alpha > 2 MeV
Detector type: GM tube 7313
Pulse rate range: 0 - 50 000 cps
Detector window active area: 15,5 cm²
Detector window thickness: 1,5 - 2 mg/cm²
Sensitivity: 2.8 cps for Sr-90/Y-90 uniform source of 0,37 Bq/cm²
Cable lenght: 2000 mm 
Temperature range: operation: -25°C to +55°C; storage: -40°C to +70°C 
Humidity: 0 - 95% relative humidity, non-condensing
Casing: durable ABS/polycarbonate
Dimensions: lenght 330 mm, width 70 mm 
Weight: 490 g
Suitable Transport Case: Peli 1470