The Jewell Instruments LSM Series represents the culmination of high-precision force-balanced accelerometer technology in an exceptionally compact package—approximately one inch cube. Designed to meet the most demanding aerospace requirements, it delivers the same proven performance as the LCA Series in a smaller form factor for applications where space is at a premium.

Built on the LS Series platform, these linear accelerometers utilize solid-state, DC, closed-loop, force-balanced technology. This design achieves accuracy, stability, and reliability several orders of magnitude greater than open-loop alternatives. The operating principle employs a torque-balanced mass: linear acceleration displaces an unbalanced mass, generating an electrical signal that is amplified and fed back to a torque generator, restoring equilibrium. This closed-loop configuration ensures exceptional linearity, low hysteresis, and long-term stability.

The LSM Series offers selectable full-scale ranges from ±0.5g to ±20g, with resolution exceeding 20 µg at 10g full scale. Bandwidth extends up to 200 Hz with 0.6 damping ratio, and the fully conditioned output provides ±5.0V with ±1% accuracy. The sensor operates reliably over an extended temperature range of -55°C to 95°C, making it suitable for harsh aerospace environments.

With proven reliability in satellite applications, the LSM Series is ideally suited for:

• Satellite attitude control and nutrition sensing
• Radar leveling and stabilization systems
• Fire control systems
• Attitude heading and reference systems (AHRS)
• Train braking and banking control
• Missile orientation and guidance
• Autopilot systems

Features

• Full-scale ranges: ±0.5g to ±20g
• Resolution: >20 µg at 10g full scale
• Bandwidth: up to 200 Hz with 0.6 damping ratio
• Output: ±5.0V (±1% accuracy)
• Compact size: approximately 1 inch cube
• Operating temperature: -55°C to 95°C (-67°F to 203°F)
• Proven reliability in satellite and aerospace applications
• Solid-state, DC, closed-loop, force-balanced design