defcon.klaxon
Lifetime Supporting Member
Hi all,
I have a client that has a water tank with a loop powered level sensor; the 4-20mA loop goes through a telephone line, half a mile away to the tank. Surprisingly, the client is complaining about a noisy signal!
We're discussing various options to upgrade this signal, as you might imagine. Radio link is a no-go, path survey came back pretty bad due to terrain and we'd need to put up 50' at treatment plant, 40' at tank. Trenching a dedicated fiber optic line would be prohibitively expensive, not surprisingly.
One potential solution we're discussing is getting a cellular based modem (like a Red Lion or Cradlepoint) and using that to send data. Another local client is doing exactly that, and it sounds like a good solution. However, I've never set up anything like that and have no idea how one would set up comms. I realize the modem would need a static IP address, but beyond that I have no idea. Wondering if anyone here has set up something similar and could provide some insight? Thanks!
I have a client that has a water tank with a loop powered level sensor; the 4-20mA loop goes through a telephone line, half a mile away to the tank. Surprisingly, the client is complaining about a noisy signal!
We're discussing various options to upgrade this signal, as you might imagine. Radio link is a no-go, path survey came back pretty bad due to terrain and we'd need to put up 50' at treatment plant, 40' at tank. Trenching a dedicated fiber optic line would be prohibitively expensive, not surprisingly.
One potential solution we're discussing is getting a cellular based modem (like a Red Lion or Cradlepoint) and using that to send data. Another local client is doing exactly that, and it sounds like a good solution. However, I've never set up anything like that and have no idea how one would set up comms. I realize the modem would need a static IP address, but beyond that I have no idea. Wondering if anyone here has set up something similar and could provide some insight? Thanks!