Hi.
Thanks for the responses .
I do need to read resistance in the range of 6.5 digits meaning 100.000 MOhms, what retrolefty wrote is correct. the half, is +- 0.5 from the last digit. DMMs are known in doing that kind of measurements.
Failure rate should be very good as I need constant measuring (R vs. time).
The range is very small, even 50cm or less will be enough.
I need to read only one sensor.
The receiver can be as sophisticated and as big as it should to stand in the above requirement, what most important is the size of the transmitter+sensor.
If you have more questions, please let me know.
Thanks.