Self-Contained Submersible Iridium MicroBeacon

The XMI-2.0 Subsurface Iridium Satellite Mooring Location Beacon continuously monitors for un-planned or accidental release of subsurface instrument moorings. The XMI-2.0 makes use of the bi-directional, global, real time Iridium Satellite Short Burst Data (SBD) network in combination with GPS position location.

The XMI-2.0’s tubular design allows it to be easily retrofitted into existing subsurface flotation configurations, such as syntactic foam. Inside the XMI-2.0 is a 9603 Iridium Satellite Short Burst Data radio transceiver, a specialized low power Xeos digital controller with GPS, Iridium antenna, GPS antenna and battery package. XMI-2.0 is intended for subsurface deployments and is intended for deployments up to 11,000 m below sea level. 

The optional Remote Head version, the XMI-RH, connects the battery pack to the electronics via a 6-foot, 4-Pin undersea cable for more precise weight balancing and installation of antennas on subsea platforms. The XMI-RH is suitable for deployments of up to 7500 meters below sea level.

After being activated, the XMI-2.0 can be deployed at the depths of up to 11,000 m. The internal solid-state sensor is triggered when the XMI-2.0 surfaces and immediately begins sending location messages as per the user settings. The internal battery pack provides over 1 1/2 years of subsurface deployment followed by up to 30 days of message transmissions. Operators can communicate with the XMI-2.0 once it has surfaced via Iridium using XeosOnline. Optionally, email commands can be sent directly to the XMI-2.0. Status information can be obtained, including the health of the GPS system and battery voltage. Timings can be changed, with defaults being one message every 3 hours. If you need to make a change to the settings, the XMI-2..0 will receive the command on its next Iridium message check. The XMI-2.0 will continue to send position messages based on its timings, until it is manually turned off upon retrieval or the battery pack drops below the minimum operating voltage of 7 Volts.

  • 1294g in air, 911g in water
  • Iridium Comms
  • 6 AA-cell Alkaline batteries
  • Deployment time: 547 days below the surface, 92 days at the surface (3 hour position messages)*****
  • GPS Location & transmission of data
  • Bluetooth Low Energy (BTLE)
  • All titanium with a glass dielectric antenna component
  • Submersible to 11,000m