Tachometer

Contact Tachometers are used to measure the speed of a rotating object in Revolutions Per Minute (RPM). The handheld tachometer couples to the shaft of the rotating component through friction. The tachometer shaft will rotate at the same speed as the component being measured. To measure linear speed such as conveyor belt speed use a contact tachometer with wheel attachment. Place the wheel against the conveyor belt and the wheel will rotate at the same rate. The tachometer will calculate the linear speed on the display based on the rotational rate and fixed diameter of the wheel.

Digital Contact Tachometer

Measures: 
Rotation speed - Surface speed

The contact tachometer function measures from 0. 5 to 19,999 RPM. The non-contact tachometer measures from 10 to 99,999 RPM functions and is laser guided to enable non-contact measurements up to 6.5 feet (2 meters) away for enhanced safety and convenience. The IR thermometer features a fixed 0.95 emissivity and a 6:1 distance to target ratio. Operation Users make non-contact RPM measurements of rotating objects by pointing the laser at reflective tape placed on objects so speed can be measured. Characters on the display reverse direction depending on contact or photo mode.