NGT-100 Gamma Tool

NGT-100

Gamma Tool (1.0”)

208-000-000-minThe 1.0” diameter NGT-100 is CBG’s next generation small diameter gamma suited for mounting within drill-collar walls. It contains our new single-board electronics cushioned between pre-molded pads, providing enhanced shock and vibration protection. The pre-molded pads also eliminate thermal expansion of flowed potting materials around and under the electronic components. The NGT-100 also has fully enclosed electronics and thru-wires to improve reliability and isolate external noise. With a 43% higher vibration tolerance and 67% greater sensitivity than 0.75” diameter gamma tools, the NGT-100 is the perfect small diameter solution for more demanding drilling environments.

Magnetic materials are kept to an absolute minimum to limit interference with closely mounted magnetometers.

NGT-100

Gamma Tool (1.0”)

208-000-000-min

The 1.0” diameter NGT-100 is CBG’s next generation small diameter gamma suited for mounting within drill-collar walls. It contains our new single-board electronics cushioned between pre-molded pads, providing enhanced shock and vibration protection. The pre-molded pads also eliminate thermal expansion of flowed potting materials around and under the electronic components. The NGT-100 also has fully enclosed electronics and thru-wires to improve reliability and isolate external noise. With a 43% higher vibration tolerance and 67% greater sensitivity than 0.75” diameter gamma tools, the NGT-100 is the perfect small diameter solution for more demanding drilling environments.

Magnetic materials are kept to an absolute minimum to limit interference with closely mounted magnetometers.

NGT-100 Specifications

P/N 208-000-000

Detector Scintillator Crystal 0.75” X 4.2”
Photomultiplier Hamamatsu R3991A
Mechanical Diameter (OD) 1.0” w/out shrink tubing sleeve
1.04” w/shrink tubing sleeve
Length (make-up) 12.0”
Weight 14 oz.
Connectors Flying lead (PWR, GND, Signal Out)
Material Aluminum Alloy
Performance Sensitivity 1.25 CPS/API
Accuracy +/- 5% to 150°C
+/- 10% 150°C to 175°C
Environmental Temperature (Operating) -15°C to 175°C
Temperature (Survival) w/ reduced accuracy -40°C to 200°C
Temperature ramp rate 2.8°C (5°F) per minute
Vibration (3 axis) 50-1000 Hz, Random 30G (20G RMS)
Shock (3 axis) 750G, 0.5 ms, half-sine
Power Requirements Power (DC input Voltage) 10-48 VDC, 50VDC Max.
Tool Current 10mA @ 28V
Output Signal Output Signal Negative Pulse, +5V to GND, 5 usec pulse width
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