Forum >4-20 Current Loop Shield
4-20 Current Loop Shield

Hello,
Im looking for a 4-20mA Current Loop Shield to be used with the SIM808 GSM/GPRS/GPS Arduino IOT Board. Can someone point me out?
I have found one made by Libelium, but its expensive, link: http://www.libelium.com/downloads/docum ... _guide.pdf
I want to solar power the whole system, so that the Current Loop monitors the Pressure of a tank and then sends it via UDP to my server.
Thanks!
Im looking for a 4-20mA Current Loop Shield to be used with the SIM808 GSM/GPRS/GPS Arduino IOT Board. Can someone point me out?
I have found one made by Libelium, but its expensive, link: http://www.libelium.com/downloads/docum ... _guide.pdf
I want to solar power the whole system, so that the Current Loop monitors the Pressure of a tank and then sends it via UDP to my server.
Thanks!