INB
INB
The MicroTesla Inclinometer Near Bit (INB) has been revised and improved, taking advantage of the latest advances in the SiFlex2 device, the associated electronic circuits, and continual upgrades to the MicroTesla proprietary Calibration System.
We can now provide inclination accuracy that closely approaches quartz accelerometers. This sensor is designed to be used with the customer’s power supply and short-hop telemetry packages.
Physical
- Length: Min 6.05”
- Diameter: 0.75”
- SiFlex2, MEMS accelerometers
- All boards are fully covered
Electrical
- Surfacemount electronics with board encapsulation
- Voltage requirement: +10V to +40V
- Input current: less than 100mA
- Digital interface: serial logic level, TTL
- Dedicated microprocessor and power supply built in
- Temperature compensated inclination output
- Raw and corrected sensor outputs, angles
Enviornmental
- All boards qualified for high-temp applications, 175°C
- SiFlex2, MEMS Accelerometers, 125°C
- All though the boards are qualified at 175°C this tools temperature rating is based on the SiFlex2 MEMS accelerometer, 125°C
Mechanical and Environmental Specifications
| Parameter | Minimum | Maximum | Units |
|---|---|---|---|
| Outside Diameter* | 0.75 1.5 | inches cm |
|
| Length* | 6.05 15.4 | inches cm |
|
| Operating Temperature | 0 + 32 | 125 257 | °C °F |
| Survival Temperature | – 40 – 40 | 175 347 | °C °F |
| Vibration, Random | 25 | g RMS, 25-500 Hz | |
| Shock | 6000 | ½ msec and ½ sine |
Instrument Accuracy Specifications
| Parameter | Minimum | Units |
|---|---|---|
| Inclination accuracy, absolute* | ± 0.15 | degrees |
| Inclination spread on axial rotation at 90° Inc | < 0.20 | degrees |
| Total face accuracy, axial rotation at 90° Inc | ± 1.0 | degrees |
| Total g field accuracy | ± 10.0 | mG |
| Continuous Inclination | ± 0.25 | degrees |
* Absolute accuracy is achieved when the instrument is tested in a controlled environment using a calibrated and certified reference position