Multímetro analógico vs digital

La tecnología es parte de nuestro trabajo diario. Lo usamos en formas simples y más complejas para que nuestro trabajo sea más eficiente. Pero el rápido cambio en la tecnología a menudo nos deja preguntándonos si la nueva tecnología supera las formas más antiguas. En nuestro caso, podemos preguntarnos si los multímetros digitales son mejores que los analógicos. Multímetro analógico vs digital? ¿Cuál es la mejor opción para ti?

Pero incluso antes de responder esa pregunta clave, es posible que queramos entender qué son los multímetros.

Un multímetro, también conocido como multitester o volt-ohm-meter (VOM) es una herramienta utilizada para registrar corriente eléctrica o amperaje, voltaje y resistencia. Los multímetros más complejos también pueden medir corriente alterna (CA), corriente continua (CC), capacidad (Faradios), Frecuencia (Hz) y conductancia (Siemens), entre otros.

Los multímetros son útiles en varios campos donde los electricistas realizan tareas que van desde simples pruebas de voltaje de la batería, hasta detectar fallas en aparatos eléctricos complejos y solucionar problemas de motores de motores y sistemas de cableado complejos.

Los multímetros se pueden encontrar en versiones analógicas y digitales. Cada uno de estos tiene puntos fuertes y desventajas que se pueden usar para decidir si es mejor adquirir multímetros analógicos versus digitales.

Multímetros Analógicos

Un multímetro analógico usa un microamperímetro para medir el amperaje. Al diferenciar los multímetros analógicos de las versiones digitales, la característica principal de diferenciación es que el VOM analógico muestra un puntero de aguja para indicar el valor de corriente, resistencia o voltaje, mientras que una versión digital simplemente muestra un número en la pantalla del multitester. La aguja en un multímetro analógico se mueve en una escala graduada para mostrar el amperaje.

Los multímetros analógicos tienen varias fortalezas:

  • Son menos costosos en comparación con sus homólogos digitales.
  • Debido a que los valores se muestran en una escala graduada, los multímetros analógicos son los mejores para detectar cambios lentos de voltaje al observar el movimiento gradual del puntero.
  • When set as ammeters to measure electric current in amperes, analog multimeters are a preferred option because of their high sensitivity and low resistance, indicating scales as low as 50 microamperes (50µA).
  • Unlike their digital counterparts, analog multimeters do not require a power source to function and can, therefore, be used anywhere as long as they are connected to the object whose power is being measured.
  • From an industrial approach, analog multimeters are easier to construct than digital designs and, hence, cost-effective for the producer.

Despite these advantages, analog multimeters also have some disadvantages:

  • Because they display amperage values on a scale, it may be more difficult to read the value with exactness, which may then compromise efficiency in the work for which the tool is used.
  • The analog multimeters lack in durability because a fall could cause the pointer to become loose and therefore faulty in reading or altogether dysfunctional.
  • Because the pointer is a moving part of the tool, this implies greater exposure to wear and tear and hence more possibility to inaccuracy.
  • Because analog multimeters do not have any digital circuitry it cannot perform the complex measurements done by a digital tool including frequency, waveform, and impedance among others.
  • The analog multitesters are bigger in size and, therefore, more cumbersome compared to the smaller digital designs.

Multímetros Digitales

In a world described as digital, multimeters are readily available in digital versions. In addition, they can be purchased in simple and more complex designs. In contrast to the arm that points to amperage values on an analog multimeter, digital multimeters record a numerical reading on an LCD screen.

Because they are a newer technology, the advantages of digital multimeters may outweigh those of the analog version. They include the following:

  • Digital multimeters exceed their analog counterparts when it comes to precision in presenting exact electric current and voltage values. The value indicated by a digital multimeter is highly accurate.
  • Because the amperage is recorded in values, anyone using the tool can easily read the digit without the struggle of making out the minute values that the pointer on an analog multimeter may tend towards.
  • Digital multimeters are usually made with additional strength to being shockproof in case of falls, and with resistance to dust and water. This renders them more durable when evaluated alongside their analog counterparts.
  • Compared to analog versions, digital multimeters can measure more values including current, voltage, continuity, frequency, resistance, temperature, and capacitance among other values.
  • They surpass their analog competitors because they are smaller and so easily portable.
  • Some digital multimeter designs may come with microprocessors, allowing them to store previous reading for later reference and processing.

As with their analog competitors, digital multimeters also come with a number of downsides:

  • You dig deeper into the pocket when purchasing digital multimeters than you would if you were buying an analog version.
  • The LCD screen relies on a battery or an electric power source which means that low battery power can cause the value to dim and render it difficult to decipher.
  • Unlike analog multimeters where sensitivity to value fluctuations causes the pointer to move towards the new reading, digital multimeters can easily read these changes as an error, requiring the user to start the measuring process afresh.
  • The converter in some digital multimeters has a limit of letters/digits which can make it record a syntax error in place of the value being measured.

Multímetro analógico vs digital: haciendo su elección

As with other devices, when purchasing a multimeter, the buying decision may be determined by preference. But what exactly informs your preference for an analog multimeter vs a digital one. One may list qualities such as durability, the accuracy of value, ease of use, portability, and price as determining factors. Digital multimeters may fail the price test but they pass the test for all other characteristics better than the analog option. If this should not be enough reason to go for a digital multimeter, one may bear in mind that the digital design of multimeters is becoming more and more popular because the market is adapting to the technological demands of our times. Besides, because they are becoming more common, the prices of digital multimeters are reducing simultaneously.