Well, datasheet say that input voltage can be up to 36V but that is in voltage measuring mode. I will use it in current measuring mode for range up to 50mV by removing the shunt resistor as you suggested. However the full range of my sensor is 1V . I want it measure only first 50mV of this 1 V. Will the input sustain 1v in current measuring mode?
Here you have a shield for 80 euros with a wideband lambda sensor. See if it works for you.https://pd2022.com/Lambda-Shield-Educative-1V0/