[Geomag-operations] Temp sensor Troubleshooting Guide

[kat uchima]

Hello Ed

As per instruction I measured the voltage and it was above 18 around 18.6
and 3.1 est, did not have a writing device to document.

#4 read around 14, so as per instruction I replaced the probe, and after
checking again it was reading the same as the others, but had an occasional
flux.

Because of this I read further and found that the replacement board is not
the same, and that the current board does not have the LM 358 Op-Amps.

What I did was replace the board thinking it just need to be replaced,
voltage was all wrong so I put the original back on. Maybe the connection
was loose, but after putting the original board back on the voltage no
longer fluctuated.

Just checked the outside temp and it is reading high at around 38C.

The temperature interface board looks almost the same except that it does
not have the two LM 358 Op-Amps, and the #4 temp is gray and is slightly
different in size, and connection.



Let me know what is next.



Kat




On Wed, Sep 5, 2018 at 2:16 PM, Sauter, Edward <esauter at usgs.gov> wrote:

> Kat,
> Please find attached the procedure for troubleshooting your bad Outside
> temperature reading.
>
> I suggest printing for your use.
>
> Please reply with your questions and results.
>
> Thank you,
> Ed Sauter
> --
> Edward A. Sauter
> US Geological Survey
> Box 25046 DFC, MS 966
> Denver, CO 80226-0046 USA
> E-mail: esauter at usgs.gov
> Phone: 303-273-8471
> Fax 303-273-8506
>
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