Vega EMS-1 Operating Manual
Page 48
Pressure Sender Input
Pressure Sensors
VDO Resistive Sender:
The EMS-1 supports the VDO 2, 5 and 10
Bar senders. VDO pressure senders used to measure fuel pressure require
the fuel isolation kit available from VDO.
Rotax 4-20mA Sender:
The EMS-1 supports the 4-20mA pressure
sender as used in Rotax 912/914 engines.
Voltage Output Pressure Senders:
e.g. UMA senders that output
a voltage signal. A 0.5-4.5V sender selection is also available.
UMA N/T 1EU07G(M): 7PSI (0.5Bar) for carburated engine (Rotax)
UMA N/T 1EU35G(M): 35PSI (2.4Bar) for carburated engine
(Lycoming/Continental)
UMA N/T 1EU100G(M): 100PSI (6.9Bar) for injected (Lycoming /
Continental)
(M) is MGL modified senders
The EMS-1 includes linearisation curves for the UMA N/T 1EU07, N/T
1EU35, N/T 1EU70, N/T 1EU70A, N/T 1EU100 and N/T 1EU150 pressure
senders
User defined senders:
EMS-1 has a user sender calibration feature
that can be customized for senders not listed above.
Temperature Sender Input
Temperature Sensors
VDO Resistive Senders:
VDO 120ºC and VDO 150ºC thermistor
senders supported.
MGL NTC Resistive Sender:
Echlin TS920SA (32040) automotive
temperature sender
MGL Precision LM335 semiconductor:
Based on
STMicroelectronics LM335 temperature sensor
Westach Resistive Senders:
Westach 399 thermistor series
temperature senders.
User defined senders:
The EMS-1 has a user sender calibration
feature that can be customized for senders not listed above
Fuel Level Sender Input
Fuel level input
Maximum voltage: 5V, 5mA maximum current
Fuel level senders supported
Any resistive type with common ground and capacitive probes with active
voltage outputs up to 5V level (push pull or pull up).
The analog channel dip switch should be disabled and an external 1k
resistor should be connected between the fuel level input and the +5V
sensor power
Analog channel input pull up resistor
1k5 (Can be disabled via the internal dip switches)
