MGL Avionics Vega EMS-1 engine monitor

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MGL Avionics Vega EMS-1 engine monitor
Our Price:  £279.00(Inc. 20% VAT)(£232.50 Exc. VAT)

Model:  V-EMS1
Brand:  MGL Avionics

The Vega EMS-1 is suitable for monitoring a very wide range of engines. 

The Vega EMS-1 is a 2 1/4” - 57mm universal engine monitor colour display instrument. The EMS-1 contains all the necessary functionality to replace several engine monitoring instruments.

Suitable for monitoring any aircraft engine, using the existing engine sensors where fitted, and/or a wide range of optional probes and senders. 

All information is displayed in an easy to read format on a high resolution wide viewing angle 1.8” 1000cd/m2 sunlight readable colour display.

The EMS-1 light weight, small size and high level of functionality makes it an excellent choice for all types of engines.

The EMS-1 can also be interfaced via the CAN bus to an optional external RDAC unit (Remote Data Acquisition Computer). This allows for easier installation as the RDAC unit is normally mounted in the engine compartment. The CAN bus data from the RDAC can be shared by multiple instruments, so ideal for dual cockpit or tandem cockpit arrangements.

Click on the FEATURES tab for more information.

And for even more information, download the manual. 

We ship worldwide. At checkout you can choose from low cost airmail options and express courier services like DHL or FedEx.

Within the UK we normally dispatch using Royal Mail or DHL. You choose the level of service at checkout.

VAT sales tax (20%) is included in the price displayed on the website. This tax applies to UK customers and EU customers. It will continue to apply to customers in the 27 EU member states from 1 January 2021. This is because we are located in Northern Ireland. The Northern Ireland Protocol, agreed by the EU to facilitate cross border trade with the Irish Republic after Brexit, also applies to the rest of the EU.  We continue to charge the UK rate of vat to customers in the 27 EU member states and there is no further tax to pay upon delivery. We can continue to zero rate the vat for EU business customers who enter their vat number at checkout. 

Customers outside the EU do not pay vat and the tax will be removed at checkout. Local import taxes may apply - check with your local authority.

Currency. All products are priced in Pound Sterling (GBP, £). Using the "Currency" tab you can change the displayed currency to either Euro (EUR, €) or US Dollar (USD, $). This is an indicative exchange rate, automatically updated daily and is based upon the prevailing bank rate. The price you see may be displayed in USD or EUR but payment processing will be conducted in GBP. This means that your card issuer will apply their usual exchange rate, which is likely to be different from our indicative rate. 


  • Large 1.8” high resolution 160x128, sunlight readable, wide viewing angle, 1000 cd/m2 TFT LCD display

  • The engine display screen is automatically configured to optimize screen space depending on what engine parameters have been selected

  • Optional External RDAC (Remote Data Acquisition Computer) interfacing via the CAN bus

  • Standard 2 1/4” aircraft enclosure (can be front or rear mounted)

  • Rotary control plus 2 independent buttons for easy menu navigation and user input

  • An external output activates when a alarm condition has been reached

  • Includes a RS232 serial output for interfacing to external equipment e.g dataloggers etc.

  • Wide input supply voltage range of 8 to 30V DC with built in voltage reversal and over voltage protection for harsh electrical environments

  • 1 year limited warranty


  • Can measure up to 4 thermocouple channels using the internal electronics or up to 12 thermocouple channels using an optional external RDAC

  • EGT/CHT Temperatures can be displayed in ºC or ºF from -100ºC to 1200ºC (-148ºF to 2192ºF)

  • High accuracy: Built in thermocouple linearisation curves and cold junction compensation

  • Includes an EGT/CHT trend graph display of each thermocouple channel

  • Records maximum EGT/CHT temperature reached for each channel

  • Includes an engine leaning feature

  • Includes an engine cruise feature

  • Special Rotax 912/914 engine monitor mode utilising the standard built in Rotax NTC CHT probes


  • Single or dual RPM measurement

  • Includes a magneto check function

  • RPM can be displayed in RPM or in percentage

  • Records maximum RPM reached for each channel

Fuel Flow (Uses RPM 2 Input) 

  •  Single fuel flow measurement 
  •  Fuel flow can be displayed in L/hr or in G/hr

Analogue Inputs

  • Can measure up to 4 Analogue channels

  • Analogue channels are universal and can be configured to measure Pressure, Temperature or Current

  • Current measurement requires a MGL Avionics magnetic field or active current shunt

  • Pressure can be measured using standard automotive resistive senders (e.g. VDO 2, 5 and 10Bar), Rotax 4-20mA senders as well as voltage output pressure senders (e.g. UMA)

  • Temperature can be measured using standard automotive resistive senders (e.g. VDO, Westach) as well as the MGL Avionics precision LM335 semiconductor sensor

  • High accuracy: Built in linearisation curves for common senders

  • Analogue channels can be programmed to a user defined curve for custom senders

  • Supports the Rotax 4-20mA pressure sender as used in the 912/914 engines

  • Temperatures can be displayed in ºC or ºF

  • Pressure can be displayed in psi or bar

  • Records minimum and maximum values reached for each channel

Manifold Pressure

  • Manifold pressure can be displayed in millibar (mB) or in inches of Mercury ("Hg”).

  • Records maximum MAP reached in permanent memory

  • MGL Avionics RDAC-XF MAP required


  • Displays both UTC (Zulu time) and local time

  • Time is maintained by an internal lithium battery which can be replaced by the user

  • Includes a settable Hobbs meter which is password protected

  • Includes an engine running and flight timer

  • Includes a programmable maintenance timer for scheduled routine engine maintenance

  • Provides a 50 entry flight log that stores the start time and duration of each of the last 50 flights. The flight timer can either be started automatically or by using a front push button


  • Can measure voltages up to 30V (compatible with both 12V and 24V aircraft supplies)

  • Contains a programmable low/high voltage alarm to automatically detect alternator failures and bad batteries

  • Records maximum and minimum Volts reached in permanent memory

Current (RDAC connection)

  • Uses the MGL Avionics magnetic field or active current shunt to measure the aircraft's current load.

  • Records maximum and minimum current reached in permanent memory

Download a pdf drawing with Vega dimensions: CLICK HERE

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  EU Customers - NO TAX or CHARGES on delivery 

We are located in Northern Ireland and will continue to export under EU Customs Rules (unlike companies in the rest of the UK). Nothing changes because of Brexit. You continue to pay the vat inclusive prices on our website and you will not pay any tax or tariffs upon delivery. Businesses in the EU can enter their vat number at checkout and we will zero rate the sale. 

And of course, there is no change for our customers throughout the United Kingdom.