About Digital Multimeter
This brand new and Latest Digital Multimeter Small Yellow Color LCD AC DC Measuring Voltage Current is a Small Multimeter for your day-to-day needs. If you have basic knowledge about Multimeters you can try this small Multimeter for basic continuity checks, Voltage Measurements, and many more.
A multimeter or a multitester, also known as a VOM (Volt-Ohm meter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter would include basic features such as the ability to measure voltage, current, and resistance.
Analog multimeters use a microammeter whose pointer moves over a scale calibrated for all the different measurements that can be made. Digital multimeters (DMM, DVOM) display the measured value in numerals, and may also display a bar of a length proportional to the quantity being measured. Digital multimeters are now far more common than analog ones, but analog multimeters are still preferable in some cases, for example when monitoring a rapidly-varying
If you’re relatively new to electronics and wish to troubleshoot electronic devices on your own, it’s essential to have a proper knowledge of multimeters.
In the earlier days, we were limited to analog devices, which were quite difficult to operate. But now, you can find a variety of digital multimeters that allow you to select a wide range of measurements (manually or automatically). Also, it can display the measured values digitally on a screen, making it easy for even beginners to operate the instrument.
All digital multimeters can measure AC/DC voltages, currents, and resistance. Moreover, some even let you test continuity, hFE, capacitance, temperature, square wave, and frequency!
As the name suggests it is a multifunction device for all your testing need for daily work. When testing DC voltage, AC voltage, DC current, resistance, diode, buzzer, and battery, connect the red test lead to the “VΩmA” jack and the black test lead to the “COM” jack, whereas When you need to test the current more than 200mA, connect the red test lead to “‘ 10A≡” jack and black test lead to “COM” jack. And When testing the temperature, connect the temperature probe to the “VΩmA” jack or the “COM” jack.
When testing the magnifying ratio of the transistor, turn the switch to the hFE position and connect the transistor to the eight-hole jack available in blue color. For the Square wave output, the frequency is 50Hz, the voltage is approximately 3Vp-p. The output jack is “VΩmA” and “COM”
Safety Tips Before Using a Digital Multimeter
If you’ve already purchased a digital multimeter, I highly recommend checking the user manual before operating it. It’s essential to know the basics and the warnings.
First and foremost, note the instrument’s category. The IEC (International Electrotechnical Commission) has defined four categories based on the type of load you’re going to measure. You can find these details in your operating manual or the instrument itself.
|CAT I||Electrical devices with high-voltage but low-energy|
|CAT II||Household appliances or portable tools that are directly connected to the electrical distribution system|
|CAT III||Hardwired equipment, polyphase motors, large building lighting systems, and circuit breakers (at the distribution level)|
|CAT IV||Primary electrical supplies and meters with low-voltage and high-energy|
Along with the category, I also suggest checking the electrical, environmental, mechanical, and safety instructions.
Dos and Don’ts of Using Multimeter
- Avoid water, liquid, and foreign bodies from entering the case and probes.
- Avoid using the instrument in case the battery is low, test leads are damaged, the battery cover is open, or you see any kind of malfunctions.
- Keep the multimeter away from flammable gases and explosive atmospheres.
- Never consider operating it on electronic devices that exceed the specified maximum voltages and currents.
- It’s a good idea to use protective equipment like gloves and safety goggles when operating the instrument.
- Ensure wearing electrically nonconductive clothes when performing any sort of tests.
- When establishing connections, always consider connecting the black (ground lead) first. Also, make sure you disconnect this one at the last.
- If you’re a beginner, it’s a good idea to first learn testing on electronically dead components.
- Always remove the test leads and turn the meter off when you’re going to open the multimeter’s chassis.
- Never consider replacing the parts unless you’re a professional or you’re supported by one.
Description Table of Digital Multimeter:
- The small size makes it comfortable in many areas
- Brand new product.
- Good for newbies with basic knowledge of VI.
1 x Digital Multimeter Small Yellow color and LCD display
2 x Measuring Probes(Red and Black)