sequimscada
Electrical
- May 21, 2009
- 8
Hi folks,
I recently was tasked with replacing some old water system telemetry panels with new SCADA gear. I did so, but there was a mysterious relay in one of the old panels. It cycled on/off every two seconds. Since I was replacing everything, I never found out what this relay did.
Recently I started upgrading a second water system. I found a relay in this panel too, same 2-second cycle time.
This panel measured only two 4-20ma levels from two water tanks. I pulled the relay and the loop current fell to zero. Anyone have an idea what this relay's purpose might be? Thanks in advance,
-
Robert
I recently was tasked with replacing some old water system telemetry panels with new SCADA gear. I did so, but there was a mysterious relay in one of the old panels. It cycled on/off every two seconds. Since I was replacing everything, I never found out what this relay did.
Recently I started upgrading a second water system. I found a relay in this panel too, same 2-second cycle time.
This panel measured only two 4-20ma levels from two water tanks. I pulled the relay and the loop current fell to zero. Anyone have an idea what this relay's purpose might be? Thanks in advance,
-
Robert