Soil Thermometers

For questions, answers, advice and discussion relating to weather recording equipment and observational procedures. This will include the use of conventional equipment and electronic automatic weather stations.
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Peter Norman
Posts: 2
Joined: Sun Dec 13, 2015 7:23 pm

Soil Thermometers

Post by Peter Norman » Mon Apr 17, 2017 5:54 pm

I found my 30cm bent stem soil thermometer, that I have had since 2002, had cracked at the bend when I went to read it one morning in late December last. As one can no longer purchase mercury-in-glass thermometers nowadays, have any members got any suggestions on what I can buy to use in its place?

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Richard Griffith
Posts: 12
Joined: Sun Dec 13, 2015 7:37 pm
Location: Horsham West Sussex

Re: Soil Thermometers

Post by Richard Griffith » Mon Apr 17, 2017 7:32 pm

You could try one of Gemini Data Loggers TinyTag Plus loggers with an external sensor.
As long as you can house the datalogger in some form of shelter to protect it from the weather you could then log earth temperatures hourly.

Richard Griffith
Horsham AWS

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Michael Brown
Posts: 11
Joined: Sat Dec 12, 2015 7:52 pm

Re: Soil Thermometers

Post by Michael Brown » Sun Apr 23, 2017 11:34 am

I have used a straight thermometer encased ina metal sheath. A suitable length of plastic water pipe into the ground, and a plastic bottle top cap. Insert the thermometer into the ground, cap it off. job done. Lots of these thermometer appear on ebay so oyu should be able to get one quickly.


Richard Hunt
Posts: 33
Joined: Sat Dec 12, 2015 8:16 pm
Location: Hornsea, East Yorkshire. 10m AMSL

Re: Soil Thermometers

Post by Richard Hunt » Sun Apr 23, 2017 8:12 pm

I've used a "normal" thermometer with the bulb encased in wax to retain the temperature as its read, and (like Michael has done) used a plastic piece of pipe hammered into the ground.

The thermometer is attached to a length of string and capped off with a old bottle top.
COL Station: 25020

N 53°54'.185". W000°10'.235"

10m AMSL

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