Thermometer Variables

cugal(5b-6a NE Ks)January 14, 2014

When my digital heat mat thermometer is set at 75F, I'm getting peak temps of 90 - 100 F when I probe the flats inside the germinator!!!

Could my digital therm be that inaccurate?

FWIW........

Probe of digital heat mat thermometer is inside germinator in small container of damp media........

This post was edited by cugal on Tue, Jan 14, 14 at 17:00

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brandon7 TN_zone(7)

At least for me, it's hard to know without knowing more about your setup. One thing for sure, something's going wrong. If your temperature controller is adjustable, have you tried turning it down? What happened then?

    Bookmark   January 15, 2014 at 12:19PM
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albert_135(Sunset 2 or 3)

Some digital thermometers have calibration adjustments. It may rally be off, or the heater my b off.

    Bookmark   January 15, 2014 at 2:42PM
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cugal(5b-6a NE Ks)

Thanks folks! I tried placing the probe of the digital heat mat thermometer directly into one of the flats & that fixed my problem (ie, gave me an accurate reading), after I'd cooked several flats of seeds, of course...........

I've never had an issue with putting the probe in a separate plastic cup of wet growing media, in years past....... Hmmmm........

    Bookmark   January 15, 2014 at 4:53PM
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