Тема: How to connect 2 fuel level sensors to Teltonika FMB120, FMB122

•    Interface to be used:  Voltage output, connected to the analog input of Teltonika FMB120
•    How many sensors can be connected : 2


Wiring (using the Eurosens Dominator AF 3-wire cable for Eurosens Dominator sensors):

FMB120 wiring

fmb120 fuel level sensor wiring

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Re: How to connect 2 fuel level sensors to Teltonika FMB120, FMB122

Setting up the sensors :  switch the Analog  output ON (by default it is ON).

Choose analog output range.  For 24V onboard voltage choose 1.0-9.5V, for 12V onboard voltage choose 1-7V.

Fuel level sensorsettings  FMB900

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Re: How to connect 2 fuel level sensors to Teltonika FMB120, FMB122

Setting up the GPS tracker:
1.    Connect sensor and check that analog input can detect the voltage coming from sensor.
2.    Set LOW priority and “Event only” option to “NO”



analog io FMB920 fuel sensor

3.    To smooth data increase averaging constant to 10.
FMB920 fuel level sensor smooth data

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Re: How to connect 2 fuel level sensors to Teltonika FMB120, FMB122

Setting up the GPS tracking platform ( Wialon as an example)

Sensor №1 (AIN1) – message “io_9”, in millivolts
Sensor №2 (AIN2) – message “io_6”, in millivolts

Calibrate tank according to Eurosens Dominator manual. Lets during tank calibration tank was filled from empty to full condition with 378 liters:
1.0 V (1000 millivolts)=0 liters
9.5V (9500 millivolts)=378 liters
Put these values in the sensor calibration table in Wialon (Generate from XY pairs) and click Generate. You may also limit min and max values in Lower and Upper bound fields.

Setting is complete.