Re: Soil moisture sensors

[nobody@xxxxxxxxxxxx (Dave Houston)]

http://www.emesystems.com/pdfs/SMX.pdf

Davis also has wireless versions.

"Keith Rathband" <notreal@xxxxxxxxxxx> wrote:

>I'm trying to use a Watermark soil moisture sensor in the my home automation
>project. I believe this sensor cannot be read as a standard resistive sensor
>using a DC voltage across the sensor, the voltage across the sensor must be
>A/C.
>
>Also, Irrometer who make the sensor don't seem to want to giveout details of
>the sensor's response curve, and temperature correction details.
>
>So,
>
>Does anyone have, or know where i can get an interface circuit schematic
>diagram for the Watermark sensor.
>
>Does anyone have, or know where i can get details of the response curve, and
>temperature compensation details.
>
>Thanks in advance
>
>Keith.
>