What is Tachometer, What are its Types?

Samsun Çarşamba Airport car rental company 5s CarRental we have prepared a blog about the question what is a tachometer? and the types of tachometers. Well, what is a tachometer? You can continue reading our blog for details.

What is a tachometer? To explain the question for those who are curious, it is an engine clock that shows the number of revolutions of the engine (shaft or discs) per unit time in motor equipment. It is also called a tachometer or RPM clock. What is a tachometer? Let's explain the question in more detail. The tachometer is usually an analog clock that displays revolutions per minute, but materials in the form of digital gauges are also increasingly appearing. The instrument consists of a dial, a pointer showing the current reading, and beacons indicating safe and unsafe levels. The word comes from the Greek "taco" meaning speed. "Metron" also means measure, so tachometer and speedometer are interchangeable and basically both measure speed.  What is a tachometer? This is how we can answer the question.

What is a tachometer? Historically, the first mechanical tachometers were designed based on centrifugal force measurement. Advanced tachometers have new uses. For example, in medicine, a hematochometer placed in an artery or vein can predict blood flow based on the rotational speed of a turbine. It can be used to diagnose circulatory problems such as clogged arteries. What is a tachometer? After answering, let's examine the types of tachometers.

What are Tachometer Types?

Analog tachometers

Consists of a needle-type interface and dial. They don't have a system to store readings. They cannot calculate details such as mean and deviation. Here, it has been seen that the speed is converted to voltage using an external frequency-voltage converter. Said voltage is then displayed with a different analog voltmeter. Briefly, the analog tachometer is a more advanced model. Outwardly, it is similar to the previous modification, but differs in the principle of transmitting the torque value to the arrow driver. The electronic part of the device is connected to the crankshaft position sensor. Inside the tachometer, there is a magnetic coil that allows the needle to deviate from the desired amount. This style of tachometers also has a lot of error structure.

Digital Tachometer

LCD or LED reading and memory for storage. They can perform statistical operations and are suitable for precise measurement and monitoring of any amount of time. Digital tachometers are more common these days and provide numerical readings rather than using dials and pins. In short, the latest modification of Tachometers is digital. Rotations can be seen as glowing numbers. On more advanced models, a virtual dial with an arrow is displayed on the screen, which is also connected to the crankshaft sensor. However, instead of a magnetic coil, a microprocessor is installed in the tachometer, which recognizes the signals from the sensor and gives the appropriate value. The error of such devices is the smallest - about 100 rpm.

Contact and Non-Contact Tachometers What is it?

The contact type is in contact with a rotating shaft and uses an optical encoder or a magnetic sensor. The non-contact type is ideal for mobile and laser or optical disc applications. Both types of mentioned types are data collection methods. In short, these are tachometers that are factory-fitted to the car. The manufacturer selects a modification that will display the RPM data fairly accurately and show the highest level parameters approved for the particular engine. These tachometers will be the most difficult to repair and replace, as they are mounted on the dashboard. To finalize and install the new device, it is necessary to disassemble the entire done control panel, and sometimes even the control panel (depending on the car model) With a remote tachometer it is much easier. They can be mounted anywhere on the car console that the driver wishes. Devices of this style are used on machines where the structure of the usual tachometer is not supplied from the factory. Most of the time, devices of this style are digital, or at worst analog, because their location is not connected by the extension of the cable. Basically, such tachometers are installed next to the control panel. This should give the driver attention to the road and control the engine speed.

What are Time and Frequency Tachometers?

Both are based on measurement methods. The timer calculates speed by measuring the time interval between incoming pulses; The frequency meter calculates the speed by measuring the frequency of incoming pulses. Timing tachometers are ideal for low speed measurements and frequency tachometers are ideal for high speed measurements.

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