TDK Corporation has expanded its micro-electro-mechanical system (MEMS) inertial sensors portfolio with the Tronics AXO315 T0, a high-temperature MEMS accelerometer with ±14 g input range and a digital interface for measurement while drilling (MWD) applications in the energy market.
Leveraging TDK’s unique closed-loop architecture that provides an unprecedented level of vibration rectification and resistance to operational shocks, AXO315T0 exhibits a bias residual error of 0.8 mg over its operating temperature range of -30° C to 150° C, enabling a precise and continuous inclination
Source: TDK Corporation measurement for directional drilling tools exposed to high temperatures.
To cope with the stringent reliability constraints required to maximize the productivity of complex drilling operations in severe environments, TDK has qualified AXO315T0 through extensive reliability testing. This includes more than 1,000 hours of powered life testing at 165° C, temperature cycling from -55° C to 165° C, as well as high temperature vibration tests (20 g RMS random vibration combined with 50 g sine sweep).
With a typical bias drift of less than 1 mg without recalibration after 1,000 hours at high temperature, AXO315T0 brings a digital and low-SWaP alternative to legacy quartz accelerometers, paving the way for a new generation of MWD tools able to operate for long periods at high temperatures with no compromise on performance.
AXO315T0 sensors and evaluation boards are available for sampling and customer evaluations. TDK will further expand its MEMS portfolio for the energy market with a new accelerometer withstanding operating temperatures up to 175° C.
Main applications
● MWD
● Logging while drilling
● Directional drilling
● Wireline
Main features and benefits
● ±14 g input range single-axis accelerometer
● Temperature range: -30° C to 150° C
● Bias residual error: 0.8 mg
● Powered lifetime: >1000 hours @ 150° C
● Vibration rejection: 20 μg/g²
● Noise density: 10 μg/√Hz
