Digital Multimeters
A digital multimeter (DMM) is an electronic measuring tool and when used properly can locate just about any type of problem. These high tech, hand held test equipment instruments will analyze the voltage, current and resistance, these being the three factors when testing for a problem. Digital Multimeters come with many different functions and it is important to read through the owners manual to learn how to properly use the device.
A few things to look for when purchasing a DMM is to consider the meter's impedance. This is the meter's operating resistance, if a device has a low impedance compared to the circuit being tested the reading may not be very accurate. Another consideration when purchasing a DMM is the size of the meter. Many professionals like the pocket digital multimeter because of its size and portability. Another popular device is the graphical DMM, which is ideal for basic fault location and electronic troubleshooting in all types of industrial and household items. (more)
Check our digital multimeter selection below.
Many new digital multimeter suppliers have emerged. Low cost units from China are becoming much more accurate that in the past. The reason for this is primarily due to the development of application specific digital multimeter I.C's that allow makers to provide excellent accuracy and still maintain low costs.
Digital multimeters are designed to provide many different types of measurements ( hence the name MULTI meter). One of the largest manufactureres of digital multimeters is FLUKE. Fluke provdes a full line up of professional grad digital multimeters with many different functions. They carry general purpose multimeters for every day use. Features include the ability to test capacitors and transistors and perhaps even include a temperature function. Then there are the specialty digital multimeters. These multimeters are essentially designed for specific industries and include automotive multimeters, HVAC multimeters, digital multimeters designed to test insulation, process meters etc. Clamp on multimeters are also popular for electricians and automotive applications.
Another popular meter is the data logging digital multimeter. A datalogging DMM which has the capability to store measurements for recall over an extended period of time. Some data logging digital multimeters store the data in the meter while others implement software and usb interface & store the data to a computer.
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