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NOS CLIENTS
GRS42 & 60: Spectral Gamma
The detector assembly comprises of a 25 x 50 mm (GRS42) or 50 x 150 mm (GRS60) cylindrical NaI crystal coupled to a thermally stabilised photomultiplier tube.
According to type the probe is capable of resolving 250 or 500 discrete gamma ray energy levels over the range 60 to 3 060 keV. Count rates from all of which are transmitted to the surface during logging.
Subsequently, discrete windows centred on the characteristic K, U and Th peak levels are used to derive the concentration of these radio-elements.
Contact us to get a quote or request more information.
![GRS probe](https://static.wixstatic.com/media/cadca1_857e16fb8214487ebf2b14f6eb42d8c2~mv2.png/v1/fill/w_311,h_469,al_c,lg_1,q_85,enc_auto/grs42-illustration.png)
GRS42 SPECIFICATIONS
![Screenshot](https://static.wixstatic.com/media/cadca1_9e0ae29355e4488ba85b11849dc22b3e~mv2.png/v1/fill/w_74,h_86,al_c,q_85,usm_0.66_1.00_0.01,blur_3,enc_auto/Capture%20d%E2%80%99e%CC%81cran%202020-11-02%20a%CC%80%2014_27_41_.png)
Technical Specifications
✓ Diameter GRS 42 : 42 mm
✓ GRS 60 : 60 mm
✓ Length : 1120 mm
✓ Weight : 7 Kg
✓ T° Max. : 70°C
✓ Pressure Max : 200 bar
![Screenshot](https://static.wixstatic.com/media/cadca1_9e0ae29355e4488ba85b11849dc22b3e~mv2.png/v1/fill/w_74,h_86,al_c,q_85,usm_0.66_1.00_0.01,blur_3,enc_auto/Capture%20d%E2%80%99e%CC%81cran%202020-11-02%20a%CC%80%2014_27_41_.png)
Sensors Parameters
✓ Detector GRS 42 : 25 x 50 mm
✓ Detector GRS 60 : 50 x 150 mm
✓ Spectral energy range : 60 to 3060 keV
✓ Spectral resolution : GRS 42 : 250 channels, 12 keV per channel
✓ Spectral resolution : GRS 60 : 500 channels, 6 keV per channel
![Screenshot](https://static.wixstatic.com/media/cadca1_9e0ae29355e4488ba85b11849dc22b3e~mv2.png/v1/fill/w_74,h_86,al_c,q_85,usm_0.66_1.00_0.01,blur_3,enc_auto/Capture%20d%E2%80%99e%CC%81cran%202020-11-02%20a%CC%80%2014_27_41_.png)
Borehole Conditions
✓ Dry or fluidfilled
✓ Open-hole or through steel or PVC casing 75mm minimum
GRS42 GALLERY
![](https://static.wixstatic.com/media/cadca1_bcd9de36377b4e9c89548a66d28abec7~mv2.jpg/v1/fill/w_108,h_163,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_bcd9de36377b4e9c89548a66d28abec7~mv2.jpg)
![](https://static.wixstatic.com/media/cadca1_857e16fb8214487ebf2b14f6eb42d8c2~mv2.png/v1/fill/w_71,h_108,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_857e16fb8214487ebf2b14f6eb42d8c2~mv2.png)
![](https://static.wixstatic.com/media/cadca1_968e0558ebae43fda5932b4fd61323ba~mv2.jpg/v1/fill/w_147,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_968e0558ebae43fda5932b4fd61323ba~mv2.jpg)
![](https://static.wixstatic.com/media/cadca1_c360c6373ecf43a1a3d78e7e2e09e1be~mv2.jpg/v1/fill/w_147,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_c360c6373ecf43a1a3d78e7e2e09e1be~mv2.jpg)
![](https://static.wixstatic.com/media/cadca1_daf6de810c6e48fcbf935dfe21527767~mv2.jpg/v1/fill/w_147,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_daf6de810c6e48fcbf935dfe21527767~mv2.jpg)
![](https://static.wixstatic.com/media/cadca1_bcd9de36377b4e9c89548a66d28abec7~mv2.jpg/v1/fill/w_108,h_163,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_bcd9de36377b4e9c89548a66d28abec7~mv2.jpg)
![](https://static.wixstatic.com/media/cadca1_857e16fb8214487ebf2b14f6eb42d8c2~mv2.png/v1/fill/w_71,h_108,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_857e16fb8214487ebf2b14f6eb42d8c2~mv2.png)
![](https://static.wixstatic.com/media/cadca1_968e0558ebae43fda5932b4fd61323ba~mv2.jpg/v1/fill/w_147,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_968e0558ebae43fda5932b4fd61323ba~mv2.jpg)
![](https://static.wixstatic.com/media/cadca1_c360c6373ecf43a1a3d78e7e2e09e1be~mv2.jpg/v1/fill/w_147,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_c360c6373ecf43a1a3d78e7e2e09e1be~mv2.jpg)
![](https://static.wixstatic.com/media/cadca1_daf6de810c6e48fcbf935dfe21527767~mv2.jpg/v1/fill/w_147,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/cadca1_daf6de810c6e48fcbf935dfe21527767~mv2.jpg)