Power consumption monitoring is crucial at your remote sites:
Fortunately, you can monitor power consumption with a few current-flow sensors and a LAN-based collection device to send the readings home:
For power monitoring, you need to choose remotes (RTUs) that have enough analog inputs to handle all of the current transducers you'll be using. Beyond that, look for adequate I/O to handle anything else you might want to monitor.NetGuardian 8A
The NetGuardian 8A is the most popular choice among DPS clients for power-monitoring applications. Because you get 8 analogs without a massive number of other inputs/outputs, you don't buy more than you need. If you want a monitoring setup that is mainly focused on the application diagram above, the NetGuardian 8A is an excellent choice.NetGuardian 832A
If the NetGuardian 8A has the right number of analogs for you, but you have bigger ambitions for your remote monitoring, the larger-capacity NetGuardian 832A is a good RTU choice. You get 4x the discrete contact-closure inputs (32 vs. 8) and 4x the control-relay outputs (8 vs. 2). You also get 8 terminal server serial ports you can use to access legacy serial interfaces via LAN.NetGuardian V16
If you want medium monitoring capacity, but you don't need 8 analogs, the NetGuardian M16 is the right fit. It has 4 analogs for monitoring current transducers or anything else, plus 16 discrete inputs for monitoring equipment alarms, doors, motion sensors, floor water, etc.Current Transducers
Various manufacturers supply current transducers, and most share a common design: A wire passes through the center of the sensors, which can detect the amount of current flowing through. The key is to choose the right capacity. Too small, and you'll go outside the measureable range. Too much capacity won't give you good resolution on the tiny part of the range you're actually using.
Common transducers used by DPS clients include:
At DPS, we receive many urgent quote requests after an earlier "Do Nothing" decision comes back to bite you. You have no reason not to be proactive (and maybe you'll manage to impress your boss).
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