NGT-CN Gamma Tool Specifications

The CBG NGT-CN Gamma tool is the third generation version of the the industry standard NGT-T for Geosteering and MWD applications.

NGT-CN Specifications
Version	Without barrel assembly	With 24″ barrel & subs
Application	Geosteering/ MWD	Geosteering/ MWD
Mechanical
Diameter (OD)	1.36″	1.875″
Length (make up)	13.6″	34.05″
Weight	1.9 lb.	15.0 lb.
End Connectors	MDM 15-Pin	200 °C, 10-Pin GE
Material	Aluminum Alloy	BeCu
Pressure	NR	18,000 PSI
Performance
Sensitivity	3.8 Counts per API	3.2 Counts per API
Accuracy	+/- 2% to 300°F. +/- 5% to 350°F.	+/- 2% to 300°F. +/- 5% to 350°F.
Maximum API Range @ 5% error	2500 API	3000 API
Thin-Bed Resolution (In 8″ hole diameter, at 50% points)	10.3″	10.3″
Environmental
Operating Temperature	-77 to +350 °F.	-77 to +350 °F.
Survival Temperature (at reduced accuracy)	400°F.	400°F.
Max Heat/Cool rate	5°F./Minute	5°F./Minute
Vibration (3 axis) 50-300 Hz Random spectrum	30 G. RMS	30 G. RMS
Shock (Z-axis)	500 G., 0.5 mS.	500 G., 0.5 mS.
Shock (X or Y-axis)	1000 G., 0.5mS.	1000 G., 0.5mS.
Power Requirements
Input Voltage	17-48 Volts	17-48 Volts
Input Current	11-8 mA. (constant power)	11-8 mA. (constant power)
Maximum Voltage	50 Volts	50 Volts
Output Signal
Negative Pulse	+5 volts to GND 5 uS fixed	+5 volts to GND 5 uS fixed