The whole point of stabilizing the temperature -- aside from characterizing the temperature sensor performance -- is to characterize the noise performance of the transducer output. Here is a 15 minute run of unfiltered data from the transducer:
The drift and undulations are a function of the mC changes in temperature. This is not inherent to the transducer -- but inherent to the nature of the test. In its proper operation, the transducer is actually immune to temperature changes (within its specification).
The total noise is about 1.7 counts RMS. At the level shown (about 811,430 counts), this represents about 0.0002 percent of the signal amplitude.
And this is only the high end A/D. The low end A/D drops the noise down to less than 0.1 counts when it's operating within its range.
The drift and undulations are a function of the mC changes in temperature. This is not inherent to the transducer -- but inherent to the nature of the test. In its proper operation, the transducer is actually immune to temperature changes (within its specification).
The total noise is about 1.7 counts RMS. At the level shown (about 811,430 counts), this represents about 0.0002 percent of the signal amplitude.
And this is only the high end A/D. The low end A/D drops the noise down to less than 0.1 counts when it's operating within its range.