Mirion Technologies GMP-12UW User Manual

GMP-12UW External Probe

Portable Survey Meters

GMP12UW

External Under Water Gamma Probe

The GMP-12UW represents the new design of Mirion exter-

nal probes. The casing with 35 mm diameter enables the

probe recalibration with most common calibration units. This

external probe enhances the detection capability of RADOS

RDS-31 meter family. It has been designed to ful ll the most

demanding applications in nuclear industry, HLS & civil

defence and industrial use. The GMP-12UW probe is intended

for gamma and X-ray radiation. The measured quantity is the

H*(10) ambient dose equivalent, both accumulated dose and

rate are monitored.

FEATURES

• compatible with all RADOS RDS-31 survey meters

• remote dose rate measurements

• optional telescopic rod

• GMP-12UW extends the measurement range of the
RDS-31

• cord lengths available up to 50 meters upon request

• casing of anodized aluminium

• enclosure class IP68

GMP-12UW is used as an external detector with the RDS-31/

iTx/iTxSD multi-purpose Radiation Survey Meters especially

for high dose rate measuring applications, like in reactor

pools.

The GMP-12UW probe is equipped with an installed IKELITE 7

connector and separate cable.

For the connection to the mating bulk connector interface at

the bottom of RDS-31 family survey meters an external probe

cable is provided. The probe can be connected “on-the- y”

without the need for switching o the meter. The RDS-31

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 coe cient

for the GMP-12UW is delivered with the probe. The user can

download the coe cient to the RDS-31 meter with the CSW-

31 con guration software.

Whenever an external detector is connected to the RDS-31,

the meter performs continuous dose rate measurements with

internal detector, even if an external probe is connected to

the meter, to ensure the safety of the user.

health physics

A Mirion Technologies Division

Featuring:

TECHNICAL SPECIFICATIONS:

Radiological Characteristics • radiation detected: gamma and x-rays,

according to ambient dose equivalent H*(10)

• energy range:
60 keV - 6 MeV for dose rate range 10 µSv/h - 10 Sv/h

• detector type:
silicone PIN diode

• dose measurement range:
1 µSv - 500 Sv

• dose linearity:
(+ 15%)...500 Sv (+ 30%)

• dose rate measurement range:
10 µSv/h - 10 Sv/h

• calibration accuracy:
5% of the reading in 3 mSv/h Cs-137 exposure at +20°C.

• energy response:

-20% … +30% over energy range 60 keV - 6 MeV

Mechanical Characterstics • enclosure class:

IP68

• connector:

- installed IKELITE 7 connector on detector body (cable not included)

• cable:
standard lenghts 10m and 50m ( other cable lengths between 10 m - 50 m
also available upon request) sold separately

• dimensions:
length 185 mm, cylinder diameter 35 mm

• weight: 400 g

GMP-12UW External Probe

Portable Survey Meters

Environmental Characteristics • temperature range:

operation -40°C to +55°C.
storage -40°C to +70°C.

NOTE: SINCE NORMS, SPECIFICATIONS AND DESIGNS ARE SUBJECT TO CHANGE,
PLEASE ASK FOR CONFIRMATION OF THE INFORMATION GIVEN IN THIS PUBLICATION

www.mirion.com

www.hp-mirion.com

20996415_GMP-12UW_EN_B

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