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Ammeter and voltmeter

Items 1 - 12 of 292
Items 1 - 12 of 292


What is an ammeter?

The ammeter is a device for measuring the intensity of an electric current, in addition to the voltmeter which measures voltage. It enables precise evaluation and display of the current in an electrical circuit, suitable for a wide range of industrial applications. Ammeters measure current flow in amperes (A) for direct current (DC) or alternating current (AC), with analog or digital display.

What are the different types of ammeters?

  • Digital ammeters feature a programmable scale, allowing customized values and specific displays, which can trigger alarms.
  • Analog ammeters detect irregular loads in electrical circuits, identifying short circuits or faulty components. Different types of analog ammeters are available: needle, ferromagnetic, thermal and magneto-electric.
In short, ammeters play an essential role in the measurement of electrical current, offering a wide range of options to meet specific measurement and monitoring needs.


What is a voltmeter?

The voltmeter is a measuring instrument specially designed to estimate electrical potential. Potentiality represents the difference in potential between two points within an electrical circuit.
Panel-mounted voltmeters are designed for installation on the surface of a machine or electrical cabinet. They measure potential in volts (V) at a specific point within an electrical circuit, and are frequently used in factories, workshops and computer rooms.


What are the different types of voltmeter?

There are two types of voltmeter:
  • Analog voltmeters: Analog voltmeters show potential on a graduated dial with a pointer.
  • Moving-coil voltmeters detect the movement of electrons, calculating the circuit's continuous potentiality with moderate power consumption.
  • Moving-iron voltmeters use a soft-iron rod to measure the potential of both AC and DC currents.
  • Electrostatic voltmeters are based on attraction, repulsion or symmetry between electrically charged plates, and can measure high potentials up to 200 kV.
Digital voltmeters :
  • Digital voltmeters feature an electronic digital display to indicate potential values.
  • Some models also reveal other parameters such as current intensity, frequency and even temperature.
  • Mounting options include 12-pin DIPs and frame brackets, while digital displays are available in red, blue or green LEDs or LCDs for maximum clarity in a variety of lighting situations.
  • Containers are available in circular, square or rectangular shapes.
All in all, voltmeters prove to be vital devices for accurately assessing electrical potential, with analog and digital alternatives offering varied benefits for a multitude of applications.

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