For AC current measurements at the low end (20-100 mA), does this meter achieve the stated accuracy/precision (+/- 10 mA)? Thanks.
137739
On AC current it is OK but on DC it is very unstable and you have to constantly pushing Reset because after measuring a current it does not returns to zero, it stays at there last measure.
137740
It sure does get close. There's a few videos on YouTube that can help you better understand this GREAT product.
420306
No. This meter is not a process meter. Process meters have an accuracy of about 0.2% for the 20mA range, this one is 1.5%. There are a few more detailed reasons, but to do any sort of instrument work you need a process meter like a Fluke 789 or an Extech PRC.
1925342
You don't. On AC, the meter ignores any DC component, so any DC offset is ignored.
1552178
Sorry Calvin, I think this a great meter, however, I only use it to check the voltage on my AA and AAA batteries and rechargeable batteries from Amazon..... Works Great ! Phil Pauls Valley, Oklahoma
1167662
There are 3 different reference levels(calculations) that this meter can do. The meter is accurate within what it cam measure. Read the manual on what the meter uses and what uther things can throw off the readings. I have found to to be pretty good meter myself.
1380811
This monitor doesn't have a voltage sensor (AC current is measured by inductive clamps and the voltage is entered manually on the display), so it can't compute power factor or adjust for phase mismatch. I haven't tried to check its accuracy, but other reviews I've seen have said that people find it to be reasonably accurate.
2281041
To measure current that high you would need a clamp ammeter or I would recommend the fluke i200 clamp that works with this meter. Remember that if it's AC then there is no polarity. I am assuming that your campground is supplying 120 or 220VAC
1182843
Not with the included probes, you'd need an amp clamp to do that. Their clamp style probe has low resolution with currents under 1 amp but I've heard their thread-style amp probe is more accurate with those situations.
1714292
Has anyone measured the actual output DC voltage when this unit is supplying 2.1 amperes of current? If so, what did your volt-meter read?
2216276
It's not a bad meter for the price. Measuring high currents is easy with Hall Effect probes (which is what they have to be to measure DC without breaking the circuit). Hall Effect current probes are far more expensive than AC probes that you see everywhere. Large current Hall Effect probes are easy to make and priced accordingly. Low current Hall Effect probes like this one are tough to make and cost much more. It's all in accuracy and post-zeroing drift. A lab quality, professional Hall Effect probe that has low current capability like this one could cost well over $1000. This one works pretty well though, especially considering the price. The +/-2.5% is: whatever it's reading, in this case say the meter reads 0.500 Amp, this means the meter could be off by as much as +/- 2.5% of this reading or 0.500 A +/- 0.0125 A, or in other words, with 500mA showing, it could be off by as much as +/-12.5mA from this value. The counts part is not related to the +/-2.5% accuracy so it either adds to or subtracts from this error by saying that the meter, showing 0.500 A, could be off by an additional +/- .01 A. The counts thing means that on this scale, the meter displays to 3 significant digits (those to the right of the decimal point). The right most digit is the minimum the meter can respond to. The "count" number of +/- 10 digits refers to this last digit, which in this case is .001 A (1 mA). So in this case the meter reading 0.500 A, could be off by the sum of +/- .0125 A (2.5% of 0.500 A) +/- .010 A (+/-10 digits of the farthest left digit, which on this meter scale is +/- 0.010 A). Watch this video. http://www.youtube.com/watch?v=1sq2WRGPABw
1082608
The range for measuring current for this device is 0A to 100A. They spec the ability to measure 50A continuous. The manual is also available online by searching "Watts Up user manual"
1162108
I don't know for sure, but my guess would be "No." As most devises have a +/- accuracy and I would expect that for the price they are charging it is quite possible it is accurate to around five percent. Hope that helps, I still really like mine. They work extremely well on my generator panel.
91597
This is a counter for ac voltage 100-250 volts. It has nothing to do with how much current is drawn by a device. It will count the minutes that a voltage is applied. That's all.
530937
There's no way to measure DC current with a clamp. All DC Amp meters use Hall Sensor to measure the magnetic field of the wire, thus estimate the current. In order to make this work, you have to Zero the reading every time before use, and make true it will not pick up interference magnetic fields. For the question you asked, most likely it's because there is magnetic field around and it's converted into current readings.
1445720
I used this meter for general use low voltage 1v -28v dc and some 110v ac. This meter is auto ranging. Looks like your looking for meter that measures milli volts below 1 volt I would not buy this model.
2122803
Pretty sure this is reference to meter accuracy. As in plus or minus 2.5%. I've used some twenty or so of these Uxcell meters of various amp and volt ranges and find them to be very good and accurate analog devices. (I also second the Wiki refs that William provided ahead of me).
642365
I did not try this into Amperes yetBut I am SURE this multi meter will measure even a .001 ac or dc Volt