Sensor drives accurate downhole drilling
The Tronics AXO315T1 MEMS accelerometer from TDK is designed for oil and gas downhole navigation in extreme environments. It features a ±14‑g input range and a 24‑bit digital SPI interface for measurement-while-drilling (MWD) applications exposed to temperatures up to 175°C.
Powered by a unique closed-loop architecture, this single-axis device achieves a tenfold improvement in vibration rejection compared with conventional open-loop MEMS accelerometers. It offers vibration rejection of 20 µg/g², noise density of 10 µg/√Hz, and a bias residual error of 1.7 mg over a temperature range of –30 °C to +175 °C.
The AXO315T1 provides a cost-effective, digital, and low-SWaP alternative to quartz accelerometers for inclination measurement in directional drilling tools. It is rated for more than 1000 hours of operation at 175°C and is housed in a hermetically sealed, ceramic surface-mount package.
AXO315T1 sensors and evaluation boards are available for sampling and customer trials.
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