It can measure a device's power consumption at that moment, right? And can extrapolate that to hours, months, etc. But does it monitor cumulative usage? If the power source drops, does it loose the cumulative data?
810825
Yes. the watt button gives you instantaneous power usage. The KWH kilowatt hour button gives you power consumption over time. For example, keep your refrigerator on it for 24 hours tells you how much power it uses on a typical day. The meter doesn't have batteries. It uses a small amount of current to operate. a power loss would lose the measurement.
1215066
You can set it to look at one or the other. Or you can have it switch back and forth between the two. But in power-save mode it only monitors one room, which is sad.
168594
It shows that the power is successfully connected. It goes out but never lets you know when fully charged. Sorry, I just let it go for a few hours.
732646
what you are seeing is an estimate based on the last hour or so of usage, that will jump all over the place.What does not jump all over is the amount of power left, for instance 50%, 75% etc.Just base your usage for how long it took you to get to 50% using the settings you normally keep it at.
991878
The device will record power usage for any period of time you require it to. So you can record for 1 hour, 1 day, 1 week or 1 month. For an appliance that runs intermittently (like a dehumidifier) you may wish to record usage for 1 week. Then you can extrapolate for the month by multiplying the 1 week consumption by 4. I will not record each interval the device runs separately however. So if you're looking for a series of readings representing each time it ran during that 1 week period, it will not do that. Hope this helps answer your question!
644369
Basically you push buttons to view present voltage current and watts or power factor and accumulated kWh (energy consumption over time). This article might be helpful: http://greenhomearchitect.com/2013/11/22/weekend-project-where-is-all-my-electricity-really-going/
1465014
Unfortunately, it will not. It will give a lot of real time measurements and do a watt-hour summary for and time starting at the time it is plugged in but this probably won't help you. You will get real time current usage if you want to watch your amp draw current as you play with volume and speaker loads.Hope this helps.
1318983
It reports energy consumption. The History report has the utility's current (near real time) Smart meter reading, as well as the total "cumulative" meter reading, both in kWh. Both readings factor in solar generation over time. The difference between the two readings is the net consumption (or generation), either positive (or negative). For this reason, the real time energy display readout "gauge" sometimes does not appear "in the red" zone. This is because, at that particular moment during the day time, solar generation exceeds consumption.
617222
Yes, it'll read current no matter what's generating it. But what you really need is to put a load on the battery and see how long they last. You can calculate how much power they deliver.
1958421
No it does not store any data for future review. It displays only real time voltage information which is lost when disconnected to power source.
1343612
I agree. I see no evidence of this feature in the instructions. But there may be a capacitor in it that holds the settings even though it may be necessary to reset the current time when the power comes back on. Perhaps that is what they mean?
1559449
You know HC, I've never really paid any attention to it, but I would bet it depends upon the programs, and such that depends on a certain amount of power; just like the cellphone when you play or use various apps or programs your draining power...Hope this was helpful.
416957
I've only used it for one thing at at time, but I have noticed that it detects that multiple things are available for connection at the same time. As for battery levels, I don't know what you are referring to. It doesn't have a battery, and whether or not you could detect the battery level of the device you connect two would depend on your software and the device.
2165623
Yes, within its accuracy. But remember it shows two numbers, the current flow and the total flow. The current flow reading erases after about 30 minutes of no flow. The cumulative flow remembers and adds to its previous total, so when you take a total flow reading you really have to have recorded the previous total flow reading to calculate the flow (unless you read the current flow number within that 30 minutes). Currently my unit has been monitoring pool consumption for about a month on the original battery. Not sure yet how long the battery will last.
224765
Yes, it can monitor the status of your UPS through a USB connection and automatically power off to preserve data if the battery charge gets low. I use mine with a CyberPower UPS
445370
No-- the device essentially turns a single usb port into a multi function peripheral that is feeds the appropriate signal back into the primary cpu. It has its own power supply and remains on even when computer is powered down.
1471921
Yes it does gives you the Amp Hour & Watt Hour (1000 Watt Hour = 1 unit of electricity) reading to monitor your system and especially battery capacity. Accumulated values of [Ah] & [Wh] resets when voltage goes below 4v or shut off.