NGT-CN Gamma Tool

NGT-CN

1.36″ OD Gamma Tool

The NGT-CN gamma tool is similar to the NGT-T and NGT-TX models but contains a longer scintillator crystal that significantly increases count rates and sensitivity.

NGT-CN

1.36″ OD Gamma Tool

The NGT-CN gamma tool is similar to the NGT-T and NGT-TX models but contains a longer scintillator crystal that significantly increases count rates and sensitivity.

NGT-CN Specifications

Detector  Nal(TI) Scintillator Crystal 1.0” Diameter  X 6.0” Length
Photomultiplier R3991A (Hamamatsu)
Mechanical Diameter (OD) 1.36”
Length (make-up) 13.6”
Weight 1.9 lb.
End Connectors Micro-D Subminiature, 15-Pin
Material Aluminum Alloy
Performance Sensitivity 1.59 CPS/API*
Accuracy +/- 5% to 300°F
+/- 10% to 350°F
Thin-Bed Resolution (8” hole Diameter) 10.3″
Environmental Operating Temperature 0°F to 350°F
Survival Temperature (reduced accuracy) -40°F to 400°F
Heat/Cool Rate, Max.  5°F per minute
Vibration (3 axis) 50-1000Hz, Random 20G RMS
Shock (3 axis) 1000G, 0.5ms, half-sine
Power Requirements DC Input Voltage 17-48 VDC, 50VDC Max.
Tool Current 8-11 mA
Output Signal Negative Pulse +5V to GND, 5 uSec width

* Counts are collected with gamma tool mounted within standard BeCu pressure barrel, (OD 1.875″, ID 1.500″).  API Calibration performed with AEA Technology, QSA Inc., KUTh Field Verifier #188074, S/N 255 Radionuclides: K-40(11.7%), U-238(90 ppm), Th-232(40 ppm).

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