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Recommendations for a voltage logger?
I am the computer systems administrator over a call center with 400 computers plus multiple servers/switches/routers, etc.
I need recommendations for a voltage logger. The purpose is to be able to attach the logger to an electrical drop that I suspect of having intermittent problems. I want to see a log of the voltage over a period of time. I prefer something that is in-line (or even a clamp on style could work). Since this is something that my company does not provide (nor will I use very often), the price must be affordable.
Does anyone have any recommendations?
2 réponses
- il y a 9 ansRéponse favorite
I use a small low-capacity UPS with built in monitors and a connection to a PC. It's made by APC and came with a free piece of logging software called PowerChute.
It wasn't vastly expensive and is the sort of thing that is handy to have about the place anyway.
- Steve CLv 6il y a 9 ans
Ideally need a little bit more information about what kind of signals are supposed to be on the line. Is is it a low voltage signal line, or is it a power cable? Are the signals AC, or DC?
You've got a lot of computers around so they should be able to record the data for you. Quite a few of the more upmarket multimeters have RS232 ports which can be used to send the data to a PC. (maybe via a serial->USB converter)
You'll be wanting something that does analogue to digital converting. It will have to fast enough to detect "what you're looking for". If the line carries AC (or even data) a soundcard can serve that purpose- but make sure the voltage you put into the sound card isn't too high, and be sure to protect against voltage spikes. AC is easy to pick up via a clamp on "transformer" but you might need an amp to get the signal into the right range.
If the line is DC, you should be able to use a potential divider to drop the voltage.
If the line is carrying signals you'll have to careful to ensure the method you are using to tap the line doesn't interfere with the signals being sent down the line.
Do you need the data to be computer readable? If not the easiest/cheapest method might well be to rig up a cheep web cam to view a multimeter, and a clock [to record the time]. Believe there are a number of free programs (designed for security purposes) which pause the recording unless there are changes to the video input- that would save a fair bit of video time, and make it easier to spot when the problems are happening.
