Talk:PPM Meter Alt
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==Temperature Compensation== | ==Temperature Compensation== | ||
Has anyone added a temperature compensation function yet?? | Has anyone added a temperature compensation function yet?? | ||
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| + | '''Shure, why not...''' | ||
| + | |||
| + | Use the circuit below. | ||
| + | No hard to find pieces , cheap and small sensor too | ||
| + | [[Image:DiodeTempSchem.png]] | ||
| + | |||
| + | For the diode probe use a piece of shrink wrap tubing for waterproofing | ||
| + | |||
| + | The results for my probe are plotted on the next graph | ||
| + | |||
| + | [[Image:DiodeTempResult.png]] | ||
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| + | The precision is pretty good if you make a 2 or 3 point calibration like the one on the above graph | ||
| + | |||
| + | " Sorry for the mess maybe someone will arrange it a little ;0) " | ||
Revision as of 22:34, 15 May 2008
PPM Meter Discussion
This page is for:
- questions
- comments
- etc...
Temperature Compensation
Has anyone added a temperature compensation function yet??
Shure, why not...
Use the circuit below.
No hard to find pieces , cheap and small sensor too
For the diode probe use a piece of shrink wrap tubing for waterproofing
The results for my probe are plotted on the next graph
The precision is pretty good if you make a 2 or 3 point calibration like the one on the above graph
" Sorry for the mess maybe someone will arrange it a little ;0) "
