Wnat is the full scale voltage across the meter? 50mV or what? What is the shunt resistance? Thanks
213659
I'm sorry. but I havent checked that yet. just don't have that accurate volt meter or bridge, sorry George
731344
The technical specifications in the User Guide say Per-Port Voltage: DC +5V, Per-Port Current: 500mA (max). My understanding is that 500mA is .5 Amps.
489880
The meter has the sensor built into its back panel and it has a hole that the ac wire is placed thru to measure the amperage. You also need to supply 120 VAC to it to power the display.
911091
As they said - and for new users - voltmeters are in parallel (red to red, black to black) so DO NOT draw current other than their own tiny working about 10~20mA for themselves.Adding a resistor ahead is only done if feeding it more than its operating voltage and for only experts - this unit does3~30V so 12V is perfect within range.(AMPMETERS on the other hand are in series so they must be rated within or for the desired load you use - like water flow IN a hosepipe) (and have special resistors supplied if needed)
1040963
It will read 10 amps with out a external shunt. If the external shunt develops a voltage drop of 75 millivolts @ 100 amps. The resistance of the shunt = .0007 ohms. The ammeter internal shunt @ 10 amps would have a voltage drop of 7.5 millivolts. The power dissipation would only need to be 75 milliwatts. Easily done with surface mount components.
2200361
Well the best i can describe is...The meter needs 5 volt min to operate( small red and black on back of meter).Then your solar panels would go thru the Shunt or other 2 heaver wires. This meter has a internal Shunt(big heavy12 guage wire in a loop on back of meter)To measure currant up to 10 amps..Google the part # !
2239493
I was interested in the same question and on Leviton's website, I found one of its technical folks posted a response to another consumer indicating the draw was 50 mw. http://communities.leviton.com/message/4440#4440 Oct 22, 2012 10:47 AM (in response to Jonathan Murray) Re: USB Charger/Tamper Resistant Outlet cat. no T5630 idle current draw? It is below 50mw as compared to Cooper who was twice ours and Pass & Seymour which was over 4 times ours.
1547137
The meter only reads voltage and current thru a shunt a DC shunt is a heavy buss and on the AC is a current transformer. The meter reads mv from the current transformer. That is the round thing with 2 wires coming out of it.
605677
Ohms law says resistance = Volts squared over watts or about 44 ohms of resistance
1766459
I have no idea and I'm not going to try.In general the meter seems pretty robust at measuring large, variable loads in the direction it was designed to measure. My application was an electric bike with a typical voltage above 50vDC and loads all the way up to 1.5kw.
6297
The meter is powered by the voltage its monitoring. No external source required.
267470
The reading maxes out at 2A. The shunt can handle up to 10A, but it will just keep the meter maxed out about 2A.
633937
The voltage meter is a blue LED behind the mode switch. It flashes to indicate the volts and tenths of a volt. See this video for more information on it. https://www.youtube.com/watch?v=RvA2Gr_xeBY
2124163
I'm afraid I can't answer your question I don't know that much about the meter I had to send mine back. There was nothing wrong with the meter it was just more meter than I needed for my equipment.
1064911
Yes, I had the same problem. The two smaller wires are the supply voltage for the meter itself. Red is positive, black is negative. I used 5 Volts DC to power mine. The bigger wires are red, blue and black. Red is the voltage sense, blue and black are for the current sense. Black should be connected directly to ground. The blue then becomes the ground for whatever device you are sensing the current on. So, the ground side of the load goes into the blue wire (then through a shunt resistor) and then out of the black wire to ground. Hope this helps! :)
2001007
Thanks Peter;I'm interested in your approach - but can't follow your text description. Could you provide a 'diagram'???I also have EE background - would like to try metering my clothes dryer(220VAC).BTW - do you have a recommendation for a 'whole house' WAM?? preferably with logging, USB capabilityRegards,WT
1141727
I just ordered my device, so this "answer" is from principles only. To measure DC current one puts a low ohm resistor IN LINE (in series) with the current carrying wire. Then one measures the voltage drop across that resistor and computes the current by Ohm's law (actually the device does this for you). The resistor can get hot, so it must be air cooled (hence external). It appears that the shunt is included (see picture).