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EMS100

Analog engine monitoring system

Discontinued

Maretron's EMS100 connects into engine wiring harnesses and converts analog signals such as water temperature and oil pressure to the new marine digital interface (NMEA 2000®). Critical engine data is then distributed throughout the vessel over a single cable where it can be monitored by any NMEA 2000® compatible display. All the information you need is available anywhere and everywhere you need it.

For Yanmar engines an additional harness (purchased separately) simplifies the wiring by plugging directly into the Yanmar harness. (See the EMS100 Datasheet under the downloads tab for ordering information.)

The EMS100 is compatible with existing instrument panels and key switches so you don't need to remove them while upgrading to newer digital technology. For new installations, the EMS100 and a compatible NMEA 2000® display can replace the traditional analog instrument panel.

  • Tachometer
  • Engine Hours
  • Coolant Water Temperature
  • Engine Oil Pressure
  • Boost Pressure
  • Exhaust Gas Pressure
  • Charging Voltage
  • Drive Trim
  • Fuel Filter Alarm
  • Boost Alarm
  • Coolant Water Level Alarm
  • Engine Oil Pressure Alarm
  • Exhaust (Salt Water Flow) Alarm
  • Coolant Water Temperature Alarm

The EMS100 supports these engines (check back soon for additional engines)

  • Yanmar GM Series
  • Yanmar YM Series
  • Yanmar JH Series
  • Yanmar LH Series
  • Yanmar LP Series
  • Yanmar LY Series

The following accessories are available for the EMS100:

Yanmar Harness

Discontinued

Part Number: EMSYRM01

Note: Maretron monitoring sensors are updated using Maretron’s N2KAnalyzer application on a PC paired with an approved NMEA 2000® gateway.

1.4.3.1 (2013-09-27) – Current Release
  • Internal Enhancements
1.4.2.4 (2012-10-19)
  • Internal Enhancements
1.4.1 (2009-08-21)
  • Fuel rate is now transmitted as Data Not Available instead of 0.
1.4 (2009-08-19)
  • Add ability to configure transmission periods for periodic PGN’s
  • Add ability to configure flywheel teeth to a resolution of 0.1 to support alternator tachometer signals
  • Add support for labeling
  • Added Yanmar W/THRESHOLD and Yanmar/VDO W/THRESHOLD types to oil pressure and boost pressure senders. These types will read 0 pressure whenever the raw pressure reading is below 10% of full scale.  This is to prevent non-zero readings with the engine powered but not running and slightly inaccurate senders.
1.3 (2008-03-27)
  • Added support for Yanmar/VDO water temperature sensor
  • Corrected Yanmar/VDO oil pressure sender maximum from 5 bar to 10 bar
1.1.4 (2007-11-15)
  • Corrected issue with engine hours incrementing ~9% too fast
1.1.0 (2007-11-15)
  • Adds pre-programmed values for Yanmar and Yanmar/VDO gauge panels & senders
  • Added ability to calibrate internal voltage reference from external power supply voltage
  • Initial Public Release
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