Baomain DH-670 30A Analog Amp Panel Meter Current Ammeter DC 0-30A with Shunt

Does the job i needed.

Meter appears well-made and works as it should. it measures the difference in voltage across the shunt which allows it to measure the DC current.

Early cars had an on-off cutout that kicked in when the generator made more than six volts. It was up to the owner or mechanic to set the charging rate several times during the year.. Too high and you boil the battery; too low and you’re stranded in the winter. My generator has a sliding third brush to set the maximum charging rate. Thankfully voltage regulators are available now that look like the original cutout. To avoid frying the electronics inside them, the manufacturer tells you how to set the generator brush. One way to do this is to have an assistant watch the ammeter on the dash and yell your progress to you. My way to hook an ammeter on the generator post and read the amperage on this more accurate meter. I am pleased with my purchase and offer this photo which is in accordance with schematics others have provided.

Used to replace a twist of 10 gage wire and a voltmeter. Much neater. Mounting the meter requires making your own templet and buying the correct hole saw. I now have a small assortment of hole saws. Ouch!

The shunt was good, but the meter was off. I used this to monitor the current from a solar array. I checked the accuracy of the shunt, and found it to be correct. With 30A DC going through the shunt, 75mV appeared across the shunt, as specified. The meter that came with the shunt seemed to be reading hight, which was confirmed since it would show 30A with only 68mV at its terminals. I added nichrome wire in series with the meter until it read 30A with 30A of current going through the shunt. In the end, my meter is accurate, but I would advise you check yours if you want it read within ~4A of the actual current.

I used it to check amps on a trailer, as I couldn't tell what light was blowing a fuse! I made a little holder for the meter! Works like a charm.

The shunt bar is to be hooked up in series with the load, that is to say the shunt bar is to be inline with the power source as if it were a inline fuse. All of the current in the circuit flows right through the shunt bar NOT the meter. The two connections on the meter are then connected to the shunt's two terminal screws. if the needle pegs in the 0 direction, the two wires are backwards.

I have a small solar set up with two 100 watt panels. As a retired electronic technician I simply had to know what current my panels were giving me and at the same time what current was going out from my storage batteries. These analog panel meters proved to be very accurate at a reasonable price. So yes I give it 5 stars.

Se coloco en una fuente de poder, para medir la corriente de consumo.

Unfortunately the meter did not work

Good meter.....must use shunt.

Excelente calidad

The product is of excellent quality, seldom seen in just an inexpensive item. Works well as it should. Manufacturer to be given kudos.