ASC EQ-x211 / EQ-x215 Low-frequency capacitive MEMS accelerometer

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Key features

• Noise density below 1.2 μg/√Hz
• MEMS capacitive accelerometer sensor
• ±3 g and ±5 g measuring range
• Triaxial, biaxial or uniaxial configuration
• DC response, gas-damped
• IP65/IP68 aluminum or stainless steel housing

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Performance highlights

The ASC EQ-x211 and EQ-x215 are low-frequency capacitive MEMS accelerometers designed to detect the smallest vibrations in seismic and structural health monitoring applications. With a noise density of <1.2 μg/√Hz and a resolution under 1 μg, these sensors meet the requirements for motion class B seismic measurements. 

Usage conditions

The EQ-x211 features a lightweight aluminum housing, while the EQ-x215 offers a rugged stainless steel version. Both variants are IP65-rated, with optional IP68 when using integrated cables and PG glands. The sensors offer differential analog output (±2.7 V FSO) and operate from 5 to 40 VDC. Available in uniaxial, biaxial, and triaxial versions, they provide flexible configuration for any installation scenario.

Typical applications

• Structural health monitoring (SHM)
• Seismic vibration sensing
• Tunnel and dam monitoring
• Low-frequency noise & vibration measurement
• Infrastructure risk assessment in power plants and bridges

Advantages of choosing this product

The EQ-series is purpose-built for environments where small, long-period vibrations must be monitored continuously. These accelerometers use capacitive MEMS technology to deliver high-accuracy measurements across a DC to 700 Hz frequency range. With a built-in self-test function, temperature output, and multiple housing and cabling options, these sensors are ideal for critical monitoring tasks.

Other important features

• Fully differential analog output (±2.7 V FSO)
• High shock resistance and thermal stability
• Temperature and self-test pin included
• Detachable or fixed cable options
• TEDS support and configurable connector types

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