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19GR – Nano Gamma

                                                                                                                              Courtesy of Geosyntec Consultants


The 19GR Nano Gamma is the slimmest downhole gamma probe in existence today. At only 19.05 mm (0.75 inches) in diameter, it can be used inside Geoprobe push tubes to collect lithological information in soils or other hard to reach zones. It is operated as a standalone pulse probe on the Matrix acquisition system.

The natural gamma probe measures the amount of gamma radiation occurring naturally within the formations crossed by a hole. Gamma rays are produced mainly by isotopes of potassium, thorium, and uranium. The gamma log is widely used in the groundwater and environmental industries to identify lithology and perform containment analyses.


Operating Conditions

Borehole Fluid
[X] Water
[X] Mud
[X] Dry

[X] Uncased
[X] PVC Borehole
[X] Steel

[_] Required
[X] Non-Necessary

Features & Benefits


 Specifications – Metric/English

Specification Metric Imperial
Diameter 19.05 mm 0.75 in.
Length 48.3 cm 19.00 in.
Length with weight sub 58.4 cm 23.00 in.
Weight 496 g 1.09 lbs
Weight with weight sub 743 g 1.64 lbs
Max. Temp. 50ºC 120ºF
Max. Pressure 100 bar 1450 psi
Sensor CsI(Na) Crystal 1.05 x 7.62 cm 0.415 x 3.0 in
Nominal Op. Voltage 24 VDC
Nominal Op. Current 74 mA



Data Sheet: Coming Soon!

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