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Communications
In order to provide reliable communications anywhere in the world, MERLIN rectifier monitors use two different types of communication.
GSM SMS Communications
The MERLIN Transformer Rectifier Monitor uses GSM SMS messaging to report data from the field to a central HQ. This method has several advantages:
• Massive investment in infrastructure by GSM network providers
• Excellent coverage in virtually all urban and semi-urban locations
• Expanding coverage worldwide into remote/rural areas
• Proven reliability
• Low cost.
SMS communication enables MERLIN rectifier monitors to be set up in the field, and real-time readings to be obtained, using a cellphone as well as via CPSM3/iCPSM software.
MERLIN rectifier monitors incorporate an internal GSM antenna which, in most locations, will be quite adequate. In weak signal areas, units can be equipped with an external antenna.
The MERLIN system is independent of network provider and Abriox will work with users to secure the most advantageous communication package in their country. We can usually supply our monitors with a GSM airtime package – but we can also factory fit free-issued SIMs or supply monitors for users to fit their own SIMs.
Satellite Communications
For areas of the world where there is no GSM coverage, the MERLIN XT Transformer Rectifier Monitor offers 100% global satellite communication.
Abriox selected the Iridium system for its high performance and high integrity. Among its many advantages over other satellite systems are:
• Compact antenna
• No satellite antenna alignment concerns
• Low power consumption
• Large data packets
• Low, uniform, message latency
The last point here is very important - some satellite systems can take up to an hour to send/receive a message if the system is busy, Iridium is 20 sec to 2 minutes (maximum). This is because the Iridium meshed constellation relays data from satellite to satellite without touching ground until it is downlinked at an Iridium gateway.
This means the MERLIN XT can be very quickly installed with negligible waiting time – a huge advantage to our customers.