ASC QF-1211 Low-frequency seismic vibration sensor

---

Key features

• Capacitive low-frequency seismic sensor
• Measurement ranges: ±1 g, ±2 g, ±5 g, ±10 g
• Bandwidth: 0 Hz (DC) to 200 Hz
• Noise density: 7 µg/√Hz (typical)
• Excellent bias and scale factor stability
• Shock resistance up to 5,000 g
• Rugged aluminium housing, IP67
• Operating temperature: −40 °C to +85 °C
• Custom cable lengths and connectors available

---

Performance

The ASC QF-1211 is a high-sensitivity, low-frequency seismic accelerometer based on capacitive MEMS technology. With a bandwidth from DC to 200 Hz and selectable measurement ranges from ±1 g to ±10 g, the sensor is designed for applications requiring precise low-frequency vibration and motion detection.

Thanks to its very low noise density of 7 µg/√Hz and excellent long-term bias stability, the QF-1211 is ideal for seismic monitoring, structural health monitoring, and low-frequency vibration analysis.

Usage conditions

The sensor is housed in a rugged anodized aluminium enclosure with IP67 protection, offering reliable performance in harsh environments. It operates between −40 °C and +85 °C, with shock resistance up to 5,000 g. Power supply ranges from 6 to 36 VDC, with low current consumption.

Applications

• Seismic and earthquake monitoring
• Structural health monitoring of bridges and buildings
• Low-frequency vibration analysis in civil engineering
• Condition monitoring of critical infrastructure

Advantages

The ASC QF-1211 provides high resolution, excellent stability and robust environmental protection, making it the perfect choice for engineers working in seismic monitoring, SHM, and low-frequency vibration measurement.

---