The Multimeter is a tool used by electronics related individual in measuring voltage, current, and resistance. A mulitmeter can be digital (digital multimeter or DMM) or analog (analog multimeter or DVOM). Using the multimeter can be very complicated especially to those who know nothing about electronics. However, with the information provided in this article, we are hopeful that one can have an idea on how to use a multimeter.
Parts of an Analog Multimeter
Meter Section – this part consist of the pointer and scales. The movement of the pointers allows the users to read the voltage, value, current value, and resistance value. One must note that scales come in different kinds and one should read the scale that matches with the range selector position. Positions include DC V or the Direct current voltage, AC V or the Alternating current voltage, the DC A or the direct current current, and the Ω or the resistance.
Range Selector – as mentioned above, the range selector is where the user select the measuring ranges he or she want to read.
Zero Position Adjuster – this part is the ones adjusted to set the pointer at the zero position prior to measuring.
0Ω Adjuster – this part of the multimeter is used in adjusting the pointer to the 0Ω position. This step can be done after the range selector is at its desired positions. This must be done by putting the test leads in contact.
Measuring Terminals – this part is the + and – (COM) terminals. To use this part, you have to connect the red test lead to the + terminal and the black test lead to the – (COM) terminal.
Parts of a Digital Multimeter
LCD Meter Section – here is where the number and polarity will be indicated.
Range Selector – the range selector of a digital multimeter comes in two type. The first type works like the analog selector wherein one has to adjust the measuring ranges as well as the functions, whereas on the type 2 selector, the measuring range will be changed automatically.
Power Switch – obviously used to turn the multimeter’s power supply on and off.
Hold Button – this button will be pressed when reading a value that changes fast. Pressing this button will put the display on hold allowing the user to read the value.
Measuring Terminals – for digital multimeters, measuring terminal varies according to the model. However, it is important to note that the black test lead should always be connected to the -(COM) and the red test lead to the terminal that matched the range selector’s position.