Uniaxial accelerometer 8743A series

crystalshearG-force

Overview
Type 8743A are quartz shock accelerometers for measuring impulse, impact and pyrotechnic shock. The sensing element uses a unique shear-mode four-quartz-crystal configuration with an annular preload sleeve and seismic mass, providing a high resonant frequency (≈100 kHz) for accurate measurement of high-speed events while minimizing zero shift and internal amplifier saturation. Sensors are insensitive to thermal transients and exhibit very low transverse and base-strain sensitivity. The case-isolated option provides electrical isolation using a patented technique while maintaining high resonant frequency.

Main features / advantages

• Low-impedance voltage output
• Unique quartz shear sensing element (four-crystal configuration)
• Measuring ranges: 5000 … 50000 g (higher ranges available; ITAR restricted)
• Rugged connector for repeated connections
• Wide bandwidth and high resonant frequency (≈100 kHz)
• CE conformity

Variants available

• 8743A5 — Shock accelerometer K-Shear, 5000 g (on request)
• 8743A10 — Shock accelerometer K-Shear, 10000 g (on request)
• 8743A20 — Shock accelerometer K-Shear, 20000 g (on request)
• 8743A50 — Shock accelerometer K-Shear, 50000 g (on request)
• 8743A100 — Shock accelerometer K-Shear, 100000 g (on request; ITAR restrictions may apply)

Applications and design notes

• Designed for measurement of impulses, impacts and pyrotechnic shocks in industrial testing (e.g., aerospace, automotive, component qualification)
• Optimized to minimize zero shift and prevent amplifier saturation during high-speed events
• Case-isolated option for installations requiring electrical isolation without sacrificing resonant performance

Technical characteristics / specifications

• Sensing element: shear mode, four quartz crystal configuration with annular preload sleeve and seismic mass
• Resonant frequency: high, approximately 100 kHz
• Output mode: low-impedance, voltage output
• Measuring ranges: typical variants from 5,000 g to 100,000 g (higher ranges ITAR restricted)
• Performance: accurate measurement of high-speed events with minimal zero shift and low risk of internal amplifier saturation
• Environmental sensitivity: insensitive to thermal transients; very low transverse and base-strain sensitivity
• Material: quartz sensing element does not depolarize under high shock
• Options: case-isolated version providing electrical isolation (patented technique)
• Connector: rugged connector suitable for repeated connections
• Compliance: CE
• Downloads: data sheet (English, PDF), manual (English, PDF; access may require login)