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Manual calibration (Less accurate)
If you don’t have the resistance/voltage curve from the manufacturer for your sender/gauge,
you will have to create you own curve watching your gauge. You will need as much calibration
points as you could to be accurate as possible.
For example, with this VDO pressure gauge (Voltage Sender):
Imagine we don’t have the voltage table from the manufacturer.
First, we will have to be in a Voltage input.
Check chapter 3.3.3 Voltage or Resistive Inputs
We could take four measurements can be taken, with the rod at 0%, rod at 25%, rod at 50% and
rod at 100%.
Rod at 0%, we press “Measured” button in AlbaCombi web interface, and we get value 1.17 volts
Then rod at 25% we get 2.87volts
Then rod at 50% we get 4 volts
Then rod at 100% we get 4.87 volts
In that way, we will introduce 1.17 in the first Measured cell, and in calibrated we know that 0%
will be 0 bar
