Tachometer in Civil Engineering

Tachometer is an instrument used in civil engineering for measuring the speed of rotation of an object. It is widely used in the construction industry for measuring the speed of rotating machines such as pumps, turbines, and motors. Tachometers are also used in the automotive industry for measuring the speed of vehicles.

Types of Tachometers

There are two types of tachometers- contact and non-contact tachometers. Contact tachometers work by placing a probe on the surface of the rotating object, while non-contact tachometers use light or sound waves to measure the speed of the rotating object.

Uses of Tachometers

Tachometers are used in various applications in civil engineering such as:

- Measuring the speed of rotating machinery such as pumps, turbines, and motors.
- Measuring the speed of vehicles such as cars, trucks, and trains.
- Measuring the speed of wind turbines and generators.

Tachometer with Dumpy Level

A tachometer can be fitted with a dumpy level to measure the speed of rotation of an object. The stadia hairs in the dumpy level are used to measure the distance between the instrument and the object. By measuring the angle of rotation of the object, the speed of rotation can be calculated.

Tachometer with Theodolite

A tachometer can also be fitted with a theodolite to measure the speed of rotation of an object. The stadia hairs in the theodolite are used to measure the distance between the instrument and the object. By measuring the angle of rotation of the object, the speed of rotation can be calculated.

Tachometer with Clinometers

Clinometers are used to measure the angle of inclination or slope of an object. A tachometer can be fitted with a clinometer to measure the speed of rotation of a sloping object. The stadia hairs in the clinometer are used to measure the distance between the instrument and the object. By measuring the angle of rotation of the object, the speed of rotation can be calculated.

In conclusion, tachometers are useful instruments in civil engineering for measuring the speed of rotation of an object. They can be used with dumpy levels, theodolites, and clinometers to measure the speed of rotating machinery, vehicles, and wind turbines.