I have bought 6 assorted red &amp; green meters, all marked 3-30 volts. All work on 12 V, but none have measured 24v batts. Any help appreciated, Thanks
353901
How did you try to measure 24 volts? If you used 2 twelve volt batteries in series make sure they were connected one + lead to the other - lead. Or try to measure 3 nine volt batteries snapped together. You should get 27 volts. I think there is a calibration pot on the back of the meter. It is very small and you will need a jewelers screwdriver to adjust it. Make sure the red lead goes to the + termingal of the battery. Try again and let me know. You could have a bad batch of meters. Mine worked very will on my power supply that goes up to 27 volts. One last thing...are the 24 volt batteries you are measuring good batteries? The meter might be telling you that they are not. Hope this was useful. Also be aware that all meters have a percentage of error. Some are + - .1% + - .01%. No matter how expensive the meter it will have error tho very small. The smaller the error, the larger the price. These cheap but beautiful meters are good enough for battery monitoring. I wouldnt use them to build a computer power supply.
1809050
It will not work with 24 volts. I don't recommend this unit to anyone as mine stopped working after 6 months and I had to replace the unit! I am not a happy camper with Amazon!!!
1443103
This is a frequently asked question. The voltage was apparent, however the amperes was guess work and I got the 50%-50% choice wrong. I emailed the seller and they replaced it no charge so I used the other wire. The meter has worked flawlessly for several months.
2199439
It may be weak batteries. Do you have the a.c. adapter? That may resolve the problem. I am assuming that you are referring to missing segments in the characters, not missing the entire character. Beyond correcting low battery power, I think your meter is due for servicing by a knowledgeable repair person. Have you contacted Omron about the problem? The may provide a replacement depending on the age of the meter.
687980
I had the same problem. So, I tested the battery with a multi meter and it tested at 4 volts dc. That was the condition it arrived to me in. I tossed it in the trash and bought an equivalent from RADIO SHACK. It tested at 12.3 dc volts. I hope this helps.
860528
Sorry I can't help you on this yet. I bought these units to give me readouts on my battery supplies for my solar power system and I won't be putting the system together until this summer. The meters are in Montana at my cabin and I will be here in North Dakota working until spring. So don't have access to them or the paperwork that may have come with them.
1082149
I don't know your particular setup but you need to separate voltages, one to power your volt/amp meter and the one your wanting to monitor. The you monitor you need to setup with your shunt, you have to use a shunt for it to work. If you don't set up a shunt amp meter will show nothing. I hope this helps.
595251
The only way I see it working with 24v is with a resistor. I've ordered them from the EQstore on eBay. You can just ground it to the battery source.
1573748
If using 4 12 v batts hook them up in parallel + to + to + to + . Same for negative posts.. 4 6v batts make 2 12 v batts by hooking two 6 v in series.. Hook pos. to neg on 2 bats then do same for other 2 6 v. now you have 2 12v batts. Hook + to + and - to -... Now you have 1 super 12v batt. Feed regulated panel power to charge them. Use inverted power as needed
2023816
I have connected one 12 volt 3 meter strip to a 30 amp 12 volt power supply and tested the amp draw to come up with these values. LED Power draw information - - 3 meter set - - 1 - Green only = 1.4 amps @ 12 volts 2 - Red only = 1.39 amps @ 12 volts 3 - Blue only = 1.19 amps @ 12 volts 1+2 - light green = 2.5 amps @ 12 volts 1+3 - light blue = 2.27 amps @ 12 volts 2+3 - purple = 2.28 amps @ 12 volts 1+2+3 - white = 3.18 amps @ 12 volts 3.281 feet in one meter Hope this helps.
1513301
Try tying he white o he red. I bought a few of these nifty voltmeters and they're pretty accurate. I know the instructions say white to sourcebut trust me tie white and res together and you wont miss. I have 3 and thinking about ordering a few more for the price. Some malaysian electronics are pretty good. Suspect it's in this tablet.
556567
Take various meter readings across the green screen and then average them out to get a final reading. This model will not doany averaging automatically, so you have to do it old school. Love this meter & haven't had any problems with it. Hope this helps.
603197
Yes, that will work. The meter reading will indicate the value of the power source voltage. Instant battery voltmeter if that's what you want.
651898
check for a full 48 volts at the terminals that connect to the meter with a voltmeter. A bad ground or excessive wire resistance will fool the meter into giving a lower than normal reading. Or the meter is defective. A digital voltmeter will confirm the actual battery pack voltage.
1396200
If it's only one strip, it will draw about 2amps so this meter will not read that accurately. Get one that has a built in shunt that will measure 5 or 10 amps and won't require the complexity of adding a shunt. Like this:DROK&reg: 0.28'' DC 0-100V 10A Digital Voltmeter Ammeter Voltage Current Tester Gauge Red Green Bright LED Display Five Wires Volt Amp Meter for Solar Battery Monitor Car Motor Panel Mount
1771919
There is a button on the back make sure thays is press down and if you have a multi meter check the nc with the neg end of the multi meter and the positve on the 12v in see what u get
2169103
This meter is designed for appliance service technicians, and is not a laboratory instrument. In practice you will see two places past the decimal when working with 12 volt systems and one place past the decimal when working with 120 volt systems. (It is a 4 digit display.) According to the manual 400mV range has 0.1mV resolution ± (0.5% + 4 digits) That only works if you are measuring something below 400mV, otherwise you get an out of range error. Read more here: http://www.kleintools.com/sites/kleintools/files/instructions/CL2000_TrueRms-Digital-Clamp-Meter-Instructions.pdf