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 Crystal1.0” Diameter  X 6.0” Length
PhotomultiplierR3991A (Hamamatsu)
MechanicalDiameter (OD)1.36”
Length (make-up)13.6”
Weight1.9 lb.
End ConnectorsMicro-D Subminiature, 15-Pin
MaterialAluminum Alloy
PerformanceSensitivity1.59 CPS/API*
Accuracy+/- 5% to 300°F
+/- 10% to 350°F
Thin-Bed Resolution (8” hole Diameter)10.3″
EnvironmentalOperating Temperature0°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, Random20G RMS
Shock (3 axis)1000G, 0.5ms, half-sine
Power RequirementsDC Input Voltage17-48 VDC, 50VDC Max.
Tool Current8-11 mA
Output SignalNegative 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).