DC Accelerometer

Measurement Specialties (Hampton, VA) has introduced a rugged, triaxial DC accelerometer for steady-state, low-g vibration measurements and high-g transient shock measurements. The piezoresistive, MEMSbased Model 3803A provides triaxial measurement under harsh operating conditions. Hermetically sealed in a welded, stainless steel housing, the IP65-rated sensor is used for testing applications in harsh, high-performance installations. The unit is offered in dynamic ranges from ±2 g’s to ±2,000 g’s, and is gas-damped to provide a wide frequency response across all three axes. The unit’s MEMS sensing elements include overrange stops for protection to shock levels greater than 5,000 g.

The sensor includes integral temperature compensation to provide a stable output over the operating temperature range of -40 °C to +105 °C. It can be stud- or screw-mounted for installation in most testing environments. Optional accessories include a 3-channel DC amplifier with a low-input noise floor of less than 20 μVrms, and an auto-zero inline amplifier with five user-selectable gain settings.