Digital multimeters are necessary tools for every electrical technician. Measuring current, voltage and resistance they are pretty much essential items for anyone who works in a position involving electricity or servicing electrical items. There are many brands available on the market, such as Hantek, Rigol and so on.
Of cause, different brands and different models decides different price. The price range is from $10 to $5000. In a word, digital multimeters share the same functions like measure current, measure voltage and measure resistance.
Here, this article will introduce the essential parts of digital multimeter.
Display, is the most feature between digital multimeter and analog multimeter. A large and colorful screen is popular that easy to read out for technicians. Most of these testing tools display four ways, with 0 or 1, with a +/- indicator. Some advanced will display the readout of AC/DC.
Connections, general speaking, all the digital multimeters have 2 probes at least. There are some main connectors including a common connector, a voltage/ ohms/ frequency connector, an amperage connector. The common connector was usually attached with the black probe. The connector of voltage, ohms usually attached with the red probe. The amperage connectorof measuring current accepts with red probes.
Each digital multimeter has a main switch to turn or off the device. The main switch is outstanding on the each device.
In fact, cheaper multimeters don't have a lot of bells and whistles, so they are easy to operate. The functions of measuring ohms, ohms and volts are really enough for you which often used in common situations. More expensive multimeters are suit for the people who are professional and work with advanced equipments. Or it will lead a waste.
You can buy digital multimeters from many offline shops such an electrical retailers. You may find it easier to purchase one from an online store which is likely to have high quality and cheap price of multimeters for sale.