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Different Types of Ohmmeters along with Their Working and Applications

There are different types of ohmmeters with different levels. Like micro, mega, and milli ohmmeter, etc. Low resistance is measured by a micro-ohmmeter and high resistance by a mega-ohmmeter. Using an ohmmeter is easy and convenient, but the result obtained is less accurate.

The instrument which is used to measure the electrical resistance of a circuit and the resistance of the components of an electric circuit is called an ohmmeter. An ohmmeter can also be used to find the value of an unknown resistor. Resistance is measured in ohms.

Types of Ohmmeters

The following are the three main types of ohmmeters.

Series Ohmmeter.
Shunt Ohmmeter.
Multi-Range Ohmmeter.

Other Types of Ohmmeters

The Following are other types of Ohmmeters.

Micro Ohmmeter.
Milli Ohmmeter.
Mega ohmmeter (Megger).
Digital Ohmmeter.

Applications of Ohmmeters

An ohmmeter can be used to ensure the continuity of the circuit which means that if there is enough current through the circuit or there is a very large flow of current then the circuit will fall apart.

They are widely used in electronic laboratories in engineering to test electronic components.

These are used for debugging small ICs such as PCBs and other stuff that needs to be executed in sensitive equipment.

Different Types of Ammeters

An instrument used to measure direct (DC) or alternating (AC) electric current is called an ammeter. Current is the flow of electrons whose SI unit is ampere. Therefore, the instrument with which the flow of current in an ampere is measured is called the ampere meter or ammeter.

For an ideal ammeter, the internal resistance of the ammeter should be zero but in practice, the ammeter has little internal resistance which is considered to be negligible. The measurement value of the ammeter depends on the value of the resistance.

Ammeter Connection in Circuit
Ammeter Shunt
Effect of temperature in ammeter

Types of Ammeter

The classification of an ammeter depends on its design and the type of current flowing through the ammeter.

Permanent moving coil ammeter.
Moving iron ammeter.
Electro-dynamometer ammeter.
Rectifier type ammeter.
DC Ammeter.
AC Ammeter.

The instruments which are used to measure the power factors in any quantity are known as measuring instruments. Which are useful for measuring electrical quantities or parameters. The electric current cannot be detected by the eye. Electronic measuring instruments are used to measure the flow of electricity. These tools are important for understanding the nature and voltage of electric charges flowing in any electronic device.

Electronic measuring instruments are widely used to measure the amount of electric charge and the amount of electricity flowing through various electronic devices. Because different instruments involve different types of electric current and to measure current, voltage, and resistance, different types of electronic measuring instruments are designed and calibrated for different electronic devices.