Does it sense voltage or it only senses current and has a fixed voltage?
1557459
Can I use this product to monitor my monthly home A/C usage? I would like to be able to know whatour year round usage.
1557460
The Owl measures amps and assumes a fixed voltage. The voltage settings as well as the kWh rate are adjustable.
1253950
there is a voltage converter you simply plug in. That part of the is wired.
230333
This has and internal piezoelectric sensor that activates based on the amount of flex or frequency amplitude that is imparted on the glass or whatever surface you have it mounted to. It's almost like a regular relay or reed switch with a little bit faster response. There is no current/power draw unless it is activated.
1455549
The button is pushed to activate the unit and detect any voltage that might be present. You push the button and hold it and the red light illuminates to indicate voltage is present. You will get a brief flash of the red light when pushing the button as the unit performs a self test.
2163879
It will measure current well under 5A DC. I've been told clamp on meters aren't very accurate and I think this is compounded at lower currents when the coil is influenced by other stray fields. When I went outside and did a little testing with my trickle charger (and leadtype multimeter in series) I found that it's quite accurate (within 10%) down to 0.5A but when I got to the 0.05A it was out by up to 75%. I think your results will vary depending on environment.
1581546
my understanding is that the source side must be the most positive than the load side.also the measured current is only on the negative side (black wires).even with zero current the meter will still read zero provided you have at least 4v between the red and black load lines
1027574
Reading "0 volts" is the same as turning the power input off, and yes, then it reads "AC 0.00 V" and the current reads "AC 0.00A".
461000
Current, voltage and power are usually measured with multimeters, not oscilloscopes. Oscilloscopes can measure, for example, current by using a shunt or higher voltages by using voltage dividers but typically with oscilloscopes you would be intrested in "looking at" waveforms, voltage curves, spikes, frequency, digital or analog outputs, etc. You can use an oscilloscope to measure voltages, for example, but it is a pain and someting a multimeter can do for you much easier.
2212607
It doesn't appear to use much, or any power, when not sensing voltage. Probably like an LCD clock. Mine has run for a couple of years now without changing the battery.
1082800
I found the voltage approximate with 0.25 to 0.5V. Generally the measured voltage would depend on the load. A high current load will likely drop the measured voltage.
268262
This system is designed to sense the power of two separate 12V circuits with one battery each. Each is separately monitored. Connecting two in series (or in parallel) defeats the monitoring.
267119
Non-contact sensing provides an indication of the presence of voltage, typically around an electrical outlet. My experience with NCV testing, however, is that it rarely provides a reading unless current is flowing (i.e., something is plugged in and operating), in which case you know there's power anyway without the tester. In your specific example, if there's a break in the "invisible fence" wiring, there's probably no current flowing, and you'd be lucky to get a clue. Since the tester must be very close to the wiring, and yours is buried, that's a second strike. It may work, but I wouldn't bet on it. There are cheap standalone NCV testers that you may want to try before buying a more costly multimeter that happens to include the feature.
1166861
This inexpensive device has little or no buffering. It reflects minute changes in voltage and sort of hunts around. Try it in another car and if it acts the same way you can just read the larger numbers and still be able to determine your system voltage within a volt or two.
2022240
40 ma is a current, not a voltage. It does not measure current, but yes it can measure 40 mv. if you want to measure current, get a 1 ohm resistor add it to your circuit and measure the voltage across it and it will be equal to the current.
2034340
I haven't actually measured it, but I have to assume the output voltage is very stable when the input voltage is within the specs of the device ... that's the whole point of the device.
2240288
The one I have does have a delay when I measure continuity. It doesn't have a delay when I measure voltage.
163139
It can read DC voltage by direct contact to the conductor. In short, the proximity detector cannot detect DC voltage like that used in car electrical systems.