External Gamma Probes
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External Gamma Probes
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An underwater external detector for the RDS-31™ meter for high dose rate measuring applications.

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  • Compatible with all Mirion RDS-31 survey meters
  • Remote dose rate measurements
  • Optional telescopic rod
  • Cord lengths up to 50 meters upon request
  • Casing of epoxy powder painted aluminum
  • Enclosure class IP67/IP68


The GMP-12SD/12UW units represent the new design of Mirion external probes. The casing with 35 mm diameter enables the probe recalibration with most common calibration units. This external probe enhances the detection capability of Mirion RDS-31 meter family. They have been designed to fulfill the most demanding applications in nuclear industry, HLS & civil defense and industrial use. The GMP-12SD/12UW probes are intended for gamma and X-ray radiation. The measured quantity is the H*(10) ambient dose rate equivalent.

The RDS-31 meter recognizes the probe connection and the user can select the appropriate type from the suggestion list to set the meter reading to desired measuring unit. The calibration coefficient for the GMP-12SD/12UW units is delivered with the probes. The user can download the coefficient to the RDS-31 meter with the CSW-31 configuration software.


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