ATEX Datalogger compliant GSM/GPRS - Based Low Power RTU
A version of the popular Battery Datalogger MM3P with all the same powerful features such as long battery life and rich RTU capabilities, this version is intrinsically safe for use in
hazardous environments.
Key functionality:
- Real time monitoring - Avoiding the need for site visits to extract data.
- Intrinsically safe - The MM3PEx datalogger is certified intrinsically safe maximising its usage in hazardous environments when compared with explosion proof and other ATEX compliant solutions.
- GSM & GPRS communications - Guaranteeing delivery of data, GSM or GPRS data calls are preferred to non-deterministic SMS messaging.
- Extended battery life - MetaSphere's unique combination of battery life and regime administration extends the period between site visits. With the standard battery, a 15 minute monitoring regime and 24 hour dial in, the expected battery life is 3-5 years.
- Safest possible battery technology - Using advanced alkaline battery technology has many safety benefits over other technologies such as lithium.
- IP68 compliant - The standard enclosure is IP68 compliant down to a depth of 4 metres for 4 days.
- Easy Handling - Elegant engineering has produced a light unit (2.0 kg including battery) with outstanding functionality with a footprint of just 300mm x 130mm x 80mm.
An intrinsically safe version of the popular battery datalogger MM3P, the MM3PEx datalogger is a low cost fit-and-forget unit for use in harsh and hazardous environments in remote locations where ATEX compliance is required. The unit is completely self-contained and exploits the latest developments in low power technology, deriving all the power it needs (including sensor power, if required) from an inexpensive field-replaceable alkaline battery pack. This, together with an integral GSM/GPRS modem, ensures a long service life with low infrastructure costs.
Although advanced, the design exploits only mature mainstream technologies, thus minimising cost whilst at the same time improving overall reliability and ensuring a long product life.
HARDWARE FEATURES
• Digital inputs – 3 with counter support up to 1 KHz (1:1 mark space ratio)
• Analogue inputs – 1 external, configurable as 0-2V, 0-5V, 0-20mA or 4-20mA. 12 bit resolution (0-4095)
• Internal diagnostics – 3 internal analogue inputs to measure Battery voltage (0-10v, 10 bit resolution), Internal
temperature (-10 to +55°C, accurate to 3°C) and Loop supply voltage (0-30v, 10 bit resolution)
An optional 24V programmable loop supply derived from the internal battery can also be provided for powering plant
interfaces such as relay contacts or 4-20mA sensor loops.
The MM3PEx has 5 12Kbytes solid-state memory for local storage of trend and alert data, equivalent to approx. 200K
samples (for example, approx. 4 months storage at a sampling rate of 1 analogue value per minute).
FIRMWARE FEATURES
• Input Processing – Independently configurable processing of all input sources, including calibration and filtering of
analogue sensors, inversion and debounce of digital sensors, configurable counter behaviour, flow rate calculations etc
• Output Processing - Independently configurable processing of all outputs, including scaling, inversion,
programmable pulse widths etc
• Trending – Independently configurable periodic and event based recording of any data source in any combination.
• Alerts – Independently configurable alarm and event detection, timestamping and recording on any input source with
extensive alarm reduction functionality, including time and level deadbands.
• Dialback – Configured with up to eight phone numbers, the RTU can initiate a call out to the Data Centre in the event
of an alarm condition being detected and, if required, at pre-defined configurable intervals (i.e. every 24 hours). Includes
support for up to eight phone numbers as standard. Blacklist prevention measures minimise nuisance calls in
accordance with any regulations laid down by the appropriate Telecommunications Authority.
• Configuration – Download and non-volatile storage of static configuration data, including communications settings,
modem controls, dialback phone numbers, alarm and event thresholds, time deadbands etc
This product was added to our catalog on Saturday 31 January, 2009.
