Model - A/21

The A/21 high-sensitivity charge accelerometer delivers a 360pC/g output, ensuring precise vibration measurements down to 10⁻⁵g and 0.1Hz. Engineers and researchers use this sensor for low-frequency dynamic analysis in civil and marine engineering applications. Its advanced KONIC Shear® sensing element enhances performance while maintaining durability in demanding environments.

Manufacturers design the A/21 with all-welded construction, eliminating epoxies and soldered connections to improve reliability and temperature stability. The sensor maximizes the sensitivity-to-mass ratio (3pC/gm), allowing accurate data collection with minimal noise interference. Its high output and low susceptibility to strain-induced errors make it ideal for applications requiring precise, low-level vibration detection.

View this product directly on DJB Instrument’s website: DJB Model A/21

Check out the IEPE version of this accelerometer: Model A/121/V