Does it measure DC current by clamping? or by test leads?
59601
Current as in amperage flow is measured very accurately by the clamp-on ring and the voltage is measured by the external plug in leads. Hope everyone who buys this product is as happy with as I am.
548316
Because the current is constant anywhere within the "loop", you can measure amps anywhere in the line. However, voltage "drops" across various components throughout this loop. If you want to measure the performance of your battery (common), place this item close to the battery between the charging source and the battery to be most accurate.
739245
Yes, AC and DC amp measurements via the clamp only. So you will not be able to measure smaller currents using leads. I will add that I've been getting quite accurate readings down to the 1-2Amp range which is great considering the two range selections are 40A & 400A. I love it for the price but for mA current you'll prob need a meter w current leads. (In defense of this unit though; clamp meters were designed for higher current apps...) Hope this helps. JD
271208
I just put an ohmmeter across the heavier gauge black and white leads of my meter (out of circuit and powered down) and I got a dead short. So yes, when powered off, the meter will pass current through the black and white leads.
1375317
There is no metal probe on the end in the sense that a DMM uses test leads with metal probe tips. This sensor works on the principle of a capacitive voltage divider. See Fluke's Web page. http://www.fluke.com/Fluke/usen/community/fluke-news-plus/ArticleCategories/Electrical/CapacitiveVoltage.htm Basically, all you need to do is have the plastic end of the probe near a conductor and if the LED in the sensor comes on you will know the line is live. This sensor will not work for DC and should not be used around high voltage AC circuits.
1687912
I've used the MS2108 to measure 12vdc parasitic current on my RV. Not sure of the overall accuracy (don't have another meter to compare with), but it did seem to be reasonably stable down to 100ma (only used the clamp-on function). I didn't make any measurements less than 100ma, so I can't comment on measurements less than this.
619227
Yes, you can measure both AC & DC voltages up to 600 volts. When measuring resistance (ohms), the circuit/device is normally not powered. As far as I know, this meter doesn't measure AC impedance (like DC resistance).
480902
The clamp is not that accurate. I think its good for testing starters, alternators, etc. I just don't think it would it would work for trying to see less then an amps worth of difference. I wouldn't bother using it to measure anything less then 10 amps.
1557672
Sure, but it will only measure the AC side of things. If you want to measure the entire RV, you'll need to attach it to the main feed wires going into the distribution panel where it will see power from any source (generator, shore, inverter). To measure power going to/from your battery bank, use meters designed for DC (with an appropriately sized shunt) and place them for either incoming (charger, solar panels, etc.) or outgoing (to the inverter or the DC breakout panel) power. For simple DC voltage measurement in my RV, I use one of these http://www.amazon.com/VoltMinder-Digital-Volt-Meter-Batteries/dp/B001IQ1XW4
1650679
If you are asking if it has the ability to measure AC with a DC offset, then yes. You can choose to filter out the DC component (leaving only the AC wave form voltage difference), or keep it in, leaving the AC waveform elevated over ground with the appropriate DC voltage difference. This is what I believe you are looking to do. The company offers a copy of the software on their site which you can use in a demo mode to see the interface you will be working with. Somewhat related, you can also generate an AC waveform with a DC offset.
1818973
Yes you can measuretrue power but you cant measure current and volts at the same time
1596922
No. You have to use a AC line splitter tool found here on amazon. The line splitter plugs into the wall and then the lamp plugs into the line splitter. Then you can use your clamp meter to measure amps. this separates the neutral and the hot wire so you can meassure the amperage.
875125
Attach a multi-meter set to measure dc volts, to both wires, just like testing a battery. If the movement is off the grid, then the wires are reversed. If the meter tests correctly, then the polarity is correct.
1472533
This type of tool can sense a hot circuit through both the individual leads's insulation and the sheath insulation. However, I don't know if this particular product will reliably do so. I have had to spend more time and effort than I would like getting a result that I was certain I could trust. Please note Trina Buchanan's response, too; she has the credentials. A different model or brand might be better for you.
958904
It can measure one circuit or the whole electrical service, You would just install the clamps on whatever circuit you want to monitor
2267168
The voltage and current are independently adjustable. So constant current or constant voltage. The gages are easy to read and fairly accurate. The only thing the device lacks is to have voltage sensing at the end of the leads rather than internally.
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.