Re: SCADA and soil moisture sensors

[Marty Grogan]

Marty Grogan writes 

What is the input voltage range?  Are the electrical interfaces protected from
spikes and surges?

>
> Aquaflex Soil Moisture Sensors will interface with most S.C.A.D.A systems.
>
> Aquaflex has been designed to overcome the traditional problems associated
> with measuring the soil moisture content at one point only, and in a
> relatively small volume of soil. Aquaflex measures average soil moisture
> over a 3 meter length and in a cylindrical volume of 6 litres of soil.
>
> The following are common outputs available, all suitable for connecting to a
> wide range of irrigation controllers, weather stations, data loggers,
> industrial controllers etc:
>
> a)  4-20mA output
> b)  Frequency/pulse output, suitable for driving a 5 volt logic input
> c)  Frequency/pulse output - contact closure, suitable for driving a clean
> contact input
>
> Custom outputs are available on request.
>
> Feel free to contact our Australian Distributor for further information:
>
> Soil Moisture Monitoring Services
> VIC, Australia
> Mr Adrian Orloff
> Tel  03 - 5865 5350
> E-mail adrian@mcmedia.com.au
>
> Please let me know if you require any additional information.