Sentinel-M is a premium-quality accelerograph that is designed for strong motion and geophysical monitoring and to meet the same dynamic range of the seismic class C MEMS 90 and 110dB.
The analog channels meet the electrical MEMS specifications and are synchronously sampled up to 500 samples/second at a resolution of 24bit with a dynamic range that exceeds 120dB@100Hz.
The integrated memory bank (32 ÷ 256 GB) allows you to manage a ring-buffer for long continuous recordings as well as event data. The data format is MiniSEED.
The system implements sophisticated trigger criteria (STA/LTA and threshold) that distinguishes false events (i.e. environment vibrations) from true seismic events. The internal GNSS receiver allows you to create a network where all the instruments are synchronized with the absolute time.
The connection to the instrument can be local via network (LAN or WiFi) or, alternatively, remote using the internal 4G CAT1 modem (optional).
The instrument can be used as a stand-alone unit, or it can be used in a MASTER-SLAVE based monitoring network where multiple instruments are connected to each other; Sentinel-M is compatible with both the Triton and Atlas and this can be useful when superior dynamics are needed, for example, as a near field unit.
Thanks to the SeedLink protocol, Sentinel-M is compatible with the most popular seismic analysis software: Seiscomp3, Antelope and Earthworm.
Sentinel-M is powered by an external DC source (5 ÷ 16 Vdc) and it is equipped with its own internal battery (LiPo) which can guarantee an autonomy of 5 hours in case of a blackout. The battery is a standard 18650 and can easily be replaced. The internal 4G modem (optional) is backed up by the internal battery.
Sentinel-M comes in an anodized aluminum case which is rugged and shock-resistant and thus suitable for field applications. Sensor connectors are industry standard M8, robust easy to find on the market.