History of Tachometers

Here is a brief history about tachometer. The inventor is assumed to be the German engineer Dietrich Uhlhorn; he used it for measuring the speed of machines in 1817. Now tachometer are equipped with digital system.

Accuracy of Digital Tachometers

Digital tachometers feature high accuracy for precision measurements. The removable rubber boot provides an ergonomic, comfortable grip while protecting the meter in heavy-duty environments. Tachometers are available in optical (noncontact) or optical/contact models. Memory stores min/max, average, and last readings during measurement. A red LED helps target equipment from up to 24" (61.0 cm) away. Accuracy of Tachometers digital is  ±0.02% of reading or 1 digit

Tachometer

Tachometer are the simplest tools used for measuring. When since and technology started its development the need for measuring equipments also rises.

TYPE OF TACHOMETER

We can categories tachometer in to two. Analog tachometer and digital tachometer. 

Analog tachometer 

Analog Tachometer is very simple to check and very easy to determine speed from these Tachometers. deficiency of analog tachometer is can not store the readings and compute details like deviation also can not saving result measuring. Examples are, Measuring motor speed like RPM manual in vehicles.

Digital Tachometer

this is more easy than manual because Examples are, measuring RPM, feeding speed, with contact or not contact.