soil moisture and temperature sensor

[paulinopjc]

I need help finding a good soil moisture and temperature sensor. it needs to be able to work in wet soil conditions. Any help would be appreciated. A link or a way to build one would be very helpful or any other tips on the type of device. Need it for thesis

 

[BigH]

Contact a geotechnical or agricultural supply/manufacturing company.

 

[paulinopjc]

Ok. But i will wait for a better response, hopefully

 

[GeoPaveTraffic]

Temperature is easy, use a thermistor.

Moisture is much more difficult. I've used "soil moisture blocks" in the past. Seemed to work well at moderate moisture contents, but at best were plus or minus 2 percent.

Mike Lambert

 

[paulinopjc]

ok, thank you. will look into that.

 

[MEM1]

http://stepspro.com/product/theprofiler/

Might have a look at these systems.

 

[oldestguy]

Foundry sand moisture content has to be measured rapidly. There are several ways. However, for years a milk bottler shaped device with dial gage on the base "speedy" meter has been used with calcium carbide mixed with sand to get a pressure that is converted to moisture content.

https://video.search.yahoo.com/yhs/...07a24ea6c15a6cb3767493a1abcc244e&action=click

Here is only one meter that is out there these days.

http://www.moisttech.com/ir3000-online-moisture-transmitter/