External Gamma Probes
Favorite this Product


External Gamma Probes
Favorite this Product

Used for measuring alpha, beta, gamma and X-ray radiation with the RDS-31™ meters.

Get More Info Data Sheet


  • Remote pulse rate measurements
  • For alpha/beta/gamma surface contamination measurements
  • Converts the meter into contamination monitor
  • Sensitive for low levels of alpha, beta and gamma radiation
  • For general contamination and frisking applications
  • Cord lengths up to 15 meters upon request


The GMP-25 probe is intended for monitoring alpha, beta, gamma and X-ray radiation.

The GMP-25 is used as an external detector with the RDS-31/iTx/iTxSD multi-purpose Radiation Survey Meters especially for surface contamination monitoring and source localization applications.

The GMP-25 probe is equipped with a Binder connector and connected to the mating bulk connector interface at the bottom of RDS-31 family survey meters.

Like other Mirion external probes, also the GMP-25 unit is a ” smart” probe, having an internal high voltage generator and non-volatile memory for calibration coefficients and probe identification data. Thus the probe can be connected “on-the-fly” without the need for switching off the meter, which automatically recognizes the probe type and sets the meter reading to defined measuring unit.


5000 Highlands Parkway Suite 150
Smyrna, GA 30082

Sales Phone: 770.432.2744
Support Phone: 770.432.2744

Support and Sales for Health Physics and Radiation Monitoring Systems products in the Americas.

Africa | Asia | Europe | Middle East | Pacific
174 Route d'Eyguières
FR-13113 Lamanon, France

Sales Phone: +33 4 90 59 59 59
Support Phone: +33 4 90 59 60 60

Sales and Service for Health Physics and Radiation Monitoring Systems in Asia, Europe, the Middle East, Africa and Pacific