AF4.5

SlimLine 4.5-Hz Seismometer – fixed
The AF4.5 is ASIR’s readily deployed shallow posthole and borehole 3-component 4.5-Hz seismometer for use in microearthquake detection and monitoring. The AF4.5 is designed for up to 100m depths in boreholes with tilts of up to 3°. Features the highest current performance level in sensitivity, reliability, and longevity.
Advanced Features
➤ extra slim 51 mm outer diameter (OD)
➤ passive geophone sensors
➤ for permanent or temporary installations
Application and Deployment
➤ Small, 6 to 18 station, local monitoring network in up to 100 m deep, < 3° tilted, boreholes
➤ Stations spaced 3 to 5 km apart for approximate event locations to within 200 to 400 meters
➤ Improves detection by 1 unit of magnitude over surface networks, detecting and locating all M > ~ 0.5
Dimensions
Outer diameter
Height
Weight
Power requirement
51 mm
420 mm
2.6 kg
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