Issue with resistance input range on Cerbo GX – sensor reads above 300 Ohm

DIY
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1

I’m experiencing an issue with my Cerbo GX device. After connecting a float level sensor, I’m unable to properly display the sensor’s state. The problem seems to be related to the resistance values provided by the sensor — the configuration in Cerbo GX allows for a maximum of 300 Ohm, but the sensor outputs up to approximately 360 Ohm at its extreme position.

Is there any way to increase or extend the supported resistance range beyond 300 Ohm in the configuration, so that the sensor readings can be interpreted correctly?

Thank you in advance for your assistance.

2

In a word - No.
The reason for this is that the design max for the Cerbo is 300 ohm, above this to 360 ohm, the input will still work, but may saturate or become non-linear above 300 ohm.
The solution to this is to shunt your sensor with an 1800 ohm resistor, which will bring the high value down to 300 ohms.