sagi4422:
What sort of wireless are you using?
I am open for suggestions range is 50cm
I need to read resistance in the range of 100MOhms with digits as : 100.000 +-0.5 Ohms
The size of the transmitter should be as low as it can. I am using 1V to operate the resistor.
data rate should be reading every 0.1sec (if it can be less than that, it will be great)
Accuracy and failure rate are very important.
Budget for this project is less problem.
I need to read only one resistor but may buy 2 or more setups.Thanks.
Sagi
Well the wireless link is pretty much boring, just selecting from the many types and methods available, not a big deal if you do your research. I however am somewhat interested in how you are making the resistance measurement using a one volt source to measure up to 100 megohms. At such low current I don't see how you can get accurate data without the measurement being swamped by low level noise. Any details on your actual measurement method and circuitry? A typical resistance measurement is made by feeding a constant current source through the unknown resistance and measuring the resultant voltage drop across the unknown resistance. How is your measurement made?
Lefty