Updated on 19 October, 2021
A multimeter is an electrical measuring instrument which is used to test different electrical properties at a high accuracy. It has been found to be useful for a wide range of applications, and is widely used for testing circuits. There are two main types of multimeters, single-side and multimeter with integrated probe. A single-sided multimeter has only one probe and can be used for only one function, while the multimeter with integrated probe has two probes and can perform two different functions. The multimeter with integrated probe is said to offer better resistance to electromagnetic fields and greater range.
There are many kinds of multimeters in the market and choosing the best multimeter for your testing purpose depends on a number of factors. If you are looking for an inexpensive electrical tester, then you can go for a multi meter with a good resistance to electromagnetic fields and range. Such multimeters are offered by most electronic stores. However, if you want to buy one which can perform two or more functions and can work in extreme environments, then you should consider buying a multimeter with multi-function ability.
There are various kinds of multimeter with different ranges and ratings. Some of them come in a very handy carrying case, so you don't have to worry about carrying it around. Such multimeters are generally known as digital multimeters and are usually available in a variety of voltage sizes, resistance levels, operating temperatures, etc. You can find a lot of digital multimeters at online stores.
Digital multimeters can be used for testing circuits, for measuring resistance, current, voltage and current. The most popularly used digital multimeters in electronics applications are Ohm's law, voltage/resistance or thermistor multimeters. Basically, multimeters are used for measuring electrical resistance or conductivity. However, if you want to measure a position directly, then a multimeter with needle nose probe is suitable for that job. Then there are multimeters for temperature, current, humidity and many more. You can also find multimeters for the thickness of different materials like plastics, rubber, metal and others.
When you buy a multimeter, you must make sure you buy the right one. To measure current, you can use a multimeter with a 10-volt source and a dual mode input. The mode input allows you to select either alternating current or pulse width modulation. When you are using a multimeter with an AC source, the results will show up in volts and currents. Similarly, when you are using a multimeter with a DC source, the results will show up in amperes and currents. Similarly, when you are using a multimeter with a RF source, the results will show up in frequency and wavelength.
If you need to measure magnetic fields, then you might like to look into using a multi meter called a HVAC multimeter. It is capable of measuring both the magnetic field and the thermal motion. These two kinds of measurement are usually necessary for various applications and equipments in the HVAC industry. For example, a heating, ventilation and air conditioning systems need both a magnetic field measurement to monitor their performance and a thermal type to monitor the condition of the fans and furnace. Likewise, it's important to monitor the overload and short-circuits that could damage your equipment. A digital multimeter has the ability to do both kinds of measurement.
With the innovative technology offered by the innova 3300 hands-free digital multimeter, you don't have to touch anything while measuring the circuit. Just simply place the probes on the terminals of all three wires to read the results. The only thing you'll need is an electrical power source. The analog version of this amazing tool has already been widely adopted by most engineers and professionals as well as by home users due to its excellent accuracy and easiness. The digital multimeter can even save you time, as it can easily identify the main circuit that needs to be measured and the other circuits that aren't involved.
When it comes to choosing a multimeter, you have so many options to choose from. You can either choose a multimeter model based on your needs, convenience and price range. Or, you can simply choose a multimeter with a proven reputation and a vast history of reliable performance. Whatever you choose, always bear in mind that a multimeter should never be an afterthought or mere addition to your HVAC system.