RAE-SAN V1.02 OBD-Bridge, Руководство по установке

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The value can be set to any of the above types as appropriate. The Average 1s should be suitable for most analogue
sensors. The other options are used when dealing with pulsed sensors or PWM outputs from ECUs.
Example Calculation of Settings
Fuel Sensor Example
Ok - lets look at a bit trickier example. Fuel sensors are notoriously inaccurate - as the tank has a wierd shape usually
- We can actually use the corrections to make the fuel gauge read more accurately.
Theres no needle to worry about for the fuel and temperature sensors so the angles don’t mean anything - but the
correction values do.
So lets assume we take the tank off the bike when its empty - and then hook a multimeter to the sensor to measure
the resistance.
We then start with an empty tank - :
 with volume empty - we measure the resistance as 100 ohm

The reading starts to change once we’ve added 1.5l
 When the level gets mostly over the tunnel in the tank - its say 6l and 60ohm
 When its getting near full and the tank starts to narrow - its 16l and 10 ohms
 When we get to 18l the resistance and is 5 ohms
 When it gets to 19l the resistance stops changing and is 3 ohms - until full at 20l
The table below shows the measumentd and the converted percentages
Volume Ohms 100-ohms %(100-ohm) %full
0 100 0 0 0
1.5 100 0 0 7.5
6 60 40 40 30
16 10 90 90 80
18 5 95 95 90
19 3 97 97 95
20 3 97 97 100
Below shows the measurements and the 100 ohms (max R) - value which represents the fuel value.
As can be seen its not perfectly straight. We can remedy some of this . we cant do anything about the less than 1.5 l
or over 18 litres ( empty and full) as the sensor doesn't respond in these regions, but we can straighten out the rest.