What is a 4000 count multimeter

What is a 4000 count multimeter

It is a moderately rugged meter that is well suited for most applications. In my limited testing, the accuracy seems to be as advertised.AstroAI is a reputable brand and comes with a three year warranty. It is ready to use, as there are 3 AAA batteries installed and the cable (probe) is included. The red part of the case is covered with rubber. The meter measures just over 3 inches wide, just over 6 inches long and just over 1-3/8 inches thick. It weighs just over 5-1/2 ounces.

Here's some information to give you a few facts

RMS, for short: a useful and accurate method for measuring all forms of alternating current (AC). Some low-cost meters use simpler methods that are not as accurate in some cases.

Long story short: when measuring AC, it is useful to convert it to its DC equivalent. If you have ever looked at an oscilloscope displaying AC current, you have probably seen the famous sine wave pattern that is typical of AC current, but this wave pattern can also have other shapes that affect the amount of power in the current. If you only measure the magnitude of the peaks (and valleys), as some meters do, you may not get a true picture of the power you have.RMS (root mean square) is a mathematical method for converting AC current information from different waveforms into an accurate DC equivalent. True RMS actually measures the information needed to convert the actual RMS value, rather than measuring something simpler and trying to convert it to RMS, as some cheap meters do.

4000 counts: the count is a way of representing the resolution of the meter. 4000 counts means that the meter can display 4000 different values in a range, for example, from 0 to 3999 in the integer range, or from .0000 to .3999 in the millionths range.

3-3/4 digits. This corresponds (in general) to 4,000 digits, i.e., 3 digits in the integer range from which 0 to 9 can be read, and up to 3 digits in the automatic range from which the left side can be read.

The display automatically selects the appropriate range to display the value. Thus, if the value is 0.13, it will be displayed in hundredths of a digit instead of tenths, which would only display 0.1 or a whole number. The range button on the meter allows you to select the range manually if necessary.

This meter can measure to one tenth of a millivolt, or one ten-thousandth of a volt, expressed in mv notation as one tenth. It can measure amperes to one tenth of a microampere, or one millionth of an ampere, shown as a tenth, which is written with the Greek letter mu A.

The meter can handle voltages up to 600 volts and currents up to 10 amps, but is limited to measuring currents over 5 amps (you wouldn't use it to measure current in a circuit while running a mixer with 12 amps per circuit).

Thermocouples measure temperature. Type K is the most common, as it is inexpensive and works well. The one supplied is shown to the right of the main product photo in the upper left corner of the home page and is a wire with two plugs on one end and a small exposed metal bead on the other. Touch the thing to measure the temperature. It is smaller than the one in the photo and has a fairly thin connecting cable, so it may need to be handled more carefully than the other items. But it works very well. It has a measuring range of -40 to 2000 degrees Fahrenheit. It can be displayed in C or F.