NGT-T2 Gamma (182°C)
The next generation of the NGT-T is here!
NGT-T2
Ruggedized, Gamma Tool (1.36” OD)
The NGT-T2 is the next generation Directional Drilling Gamma sensor. New patent pending electrical and mechanical designs push the operating temperature to 182°C and the vibration specification to 25 GRMS, 25% higher than competing tools. After dominating the market as the industry standard for more than 30 years, the newest version of our NGT-T continues this legacy.
Electronics
The NGT-T2 contains CBG’s new patent pending electronics designs. Encapsulated and cushioned within pre-molded high-temperature silicone pads, the printed circuit board is protected from extreme shock and vibration. A new and innovative technique for providing electronics temperature compensation ensures a more stable output signal through the full range of operating temperatures. A burst filter has been added to reduce spurious counts that can result from excessive shock and vibration, as well as external transient noise.
Mechanical
The NGT-T2 has been completely redesigned without changing the overall mechanical dimensions of the NGT-T. Included is a new patent pending approach to mounting the crystal and phototube for improved shock and vibration performance. No longer exposed to external noise or physical damage, the circuit board and thru-wires are enclosed beneath metal covers. All load bearing screws have been removed for enhanced reliability.
NGT-T2
Ruggedized, Gamma Tool (1.36” OD)
The NGT-T2 is the next generation Directional Drilling Gamma sensor. New patent pending electrical and mechanical designs push the operating temperature to 182°C and the vibration specification to 25 GRMS, 25% higher than competing tools. After dominating the market as the industry standard for more than 30 years, the newest version of our NGT-T continues this legacy.
Electronics
The NGT-T2 contains CBG’s new patent pending electronics designs. Encapsulated and cushioned within pre-molded high-temperature silicone pads, the printed circuit board is protected from extreme shock and vibration. A new and innovative technique for providing electronics temperature compensation ensures a more stable output signal through the full range of operating temperatures. A burst filter has been added to reduce spurious counts that can result from excessive shock and vibration, as well as external transient noise.
Mechanical
The NGT-T2 has been completely redesigned without changing the overall mechanical dimensions of the NGT-T. Included is a new patent pending approach to mounting the crystal and phototube for improved shock and vibration performance. No longer exposed to external noise or physical damage, the circuit board and thru-wires are enclosed beneath metal covers. All load bearing screws have been removed for enhanced reliability.
NGT-T2 Specifications
P/N 200-200-000
| Detector | Scintillator Crystal | Sodium Iodide, Na(TI) |
|---|---|---|
| Photomultiplier | R3991A (Hamamatsu) | |
| Mechanical | Diameter (OD) | 1.36” |
| Length (make-up) | 13.6” | |
| Weight | 1.7 lb. | |
| End Connectors | Micro-D Subminiature, 15-Pin | |
| Material | Aluminum Alloy | |
| Performance | Sensitivity | 1.14 CPS/API* |
| Accuracy | +/- 5% to 150°C +/- 10% to 182°C** |
|
| Environmental | Operating Temperature | -18°C to 182°C** |
| Survival Temperature (reduced accuracy) | -40°C to 200°C | |
| Heat/Cool Rate, Max. | 2.8°C (5°F) per minute | |
| Vibration (3 axis) 50-1000Hz, Random | 35G (25G RMS)** | |
| Shock (3 axis) | 1000G, 0.5ms, half-sine | |
| Burst Filter | Reduces spurious counts due to extreme shock/vibration and external system electronic noise.** | |
| Power Requirements | DC Input Voltage | 10v-50v, 60v Max** |
| Tool Current | 8-11 mA | |
| Output Signal | Negative Pulse | +5V to GND, 5 uSec width |
* Counts are collected with gamma tool mounted within a 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).
** Compare to NGT-T