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The Multiple Enviroscan and TriScan Sensor Bus

Sentek Enviroscan and TriScan? probes are measuring volumetric soil moisture and conductivity in multiple depths. Enviroscan or Easy-Ag? are accurate and good to install multiple depth sensors for volumetric soil moisture. They can be used in all soils. TriScan? is able to measure conductivity or salinity in sandy soils. This can be used to monitor the move of N-fertilisers in the soil of nitrogen in intensive crops in susceptible environments. The Pessl Instruments sensor bus supports the Sentek sensors with a small intelligent node which can carry two Enviroscan or TriScan? sensors with up to 10 sensors each. Due to the relative high power uptake of this systems every node has its own solar power supply. On iMETOS2 PCBs several of these nodes can be in one cable and with this it possible to many soil moisture sensors (daisy chain nodes) and transmits this data to the web server. Image
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The cabling of this sensor chain can be seen in the photographs above. The schematics below gives detailed view into the cabling of this sensors.
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Created by heiner. Last Modification: Thursday 09 of February, 2012 11:05:15 GMT by Lena.