Short Period Seismometers are designed for monitoring earthquakes in your local region, typically within about 500km of the sensor. Earthquake detection requires High Sensitivity geophones, but when you are close to an earthquake you also need a sensor that can see high-frequency signals. With a range of 2Hz to 1600Hz, the SPS-HS is the ideal sensor for this application. Most stations in the SRC observatory network are short period (1Hz and 2Hz) sensors, and include the digital data logging version of this sensor, the Gecko Tremor.
If you need to record lower frequencies at High Resolution, the SPS-HR has can detect signals between 0.1Hz (10-second period) and 150Hz without lis than 3dB of amplitude distortion. This sensor is also available in a digital data logging version, the Gecko Switch. It is called the switch because it can be converted from a velocity sensor that clips at ±50mm/s to an acceleration sensor that clips a ±2g (±19.6mm/s²), giving you the flexibility to configure the sensor for your particular application.
We have a number of Low Frequency Accelerometers available, including the LFA-HR (a ±2g acceleration sensor with 200s-800Hz high resolution range) and the LFA-XR (a ±10g acceleration sensor with 5s-2300Hz range). The LFA-XR is available in surface or borehole form factors, and all LFA models are omnidirectional, which means they can be installed at any angle.