accelerometer piezoelectric

A piezoelectric accelerometer works on a simple principle: a seismic mass loads a piezoelectric crystal, and when the sensor shakes, the crystal outputs a charge proportional to the acceleration. That charge then gets converted to a voltage either by an external charge amplifier or, in IEPE sensors, by a miniature built-in preamplifier. Kingmach supplies both configurations. The choice often comes down to field practicality—IEPE simplifies cabling with coax leads, while charge-output excels in high-temperature environments near tunnel boring machines or geothermal boreholes where electronics wouldn't survive. Our housings are machined from stainless steel and welded shut, so humidity and fine dust don't creep inside during long-term monitoring. Frequency response curves are flat across the published range of ±5%, and electrical insulation between the crystal and case keeps ground loops from ruining data when multiple sensors share a common power supply. Mounting options include stud, adhesive, and magnetic bases; for temporary setups on rotating machinery or while drilling rock anchors, we often recommend quick-release magnetic clamps. Sensitivity values generally range from 100 mV/g to 1000 mV/g. Lower sensitivities suit high-amplitude events like pile driving, while higher ones pull clean signals from ambient microtremors in slope stability studies. Kingmach also provides calibration certificates traceable to national standards, so the numbers plug directly into structural health monitoring software without guesswork. Custom cable lengths, connector types, and even branding are possible when ordered in production quantities, and lead times typically run under three weeks for standard models. Our engineers will look over your sensor mounting surface and environmental conditions to suggest the right combination of damping, isolation, and cable routing—no charge for that conversation.