Go Down

Topic: Capacitive Soil Moisture Sensor VWC reading (Read 454 times) previous topic - next topic

I tested various soil moisture sensors with a DMM, but I cannot find the Volumetric Water Content (VWC) for the SEN0193 model. All I can find is this: https://www.dfrobot.com/wiki/index.php/Capacitive_Soil_Moisture_Sensor_SKU:SEN0193
(dry < 86.7), (86.7 < wet < 173.4) and (173.4 < very wet).

[86.7*5/1023] and [173.4*5/1023]

[0.424 V] and [0.848 V]

The data is only from 1.8 - 2.4 V. So that's another issue.

Aside, this other sensor just gives the equation for the VWC:
http://manuals.decagon.com/Retired%20and%20Discontinued/Manuals/EC-20-EC-10-EC-5-Soil-Moisture-Sensor-Operators-Manual-(discontinued).pdf#page=17

wvmarle

I strongly suspect you're best off simply calibrating the sensor for your specific type of soil.
Quality of answers is related to the quality of questions. Good questions will get good answers. Useless answers are a sign of a poor question.


Go Up