Contact/ Non-Contact Tachometers have the combined features of both contact and non-contact tachometer giving you more versatility. Use one unit for non-contact and contact RPM readings along with contact linear speed measurements.
Contact Tachometers are used to measure the rotation speed of a rotating object. With a tachometer, the shaft of the rotating component is coupled to the shaft of the handheld tachometer by friction. Simply stated the tachometer shaft’ll rotate at the same speed as the component you’re measuring.
To make measurements to the linear speed like conveyor belt speed uses a contact tachometer with wheel attachment. Put the wheel towards the conveyor belt and at the same rate, the wheel will rotate. The tachometer will make calculations to the linear speed on the display on the basis of the fixed diameter of the wheel and rotational rate.
Photo and laser tachometers are utilized to make measurements of the rotation speed, with none of the physical contacts. A piece of reflective material’s fixed to the rotating component. The photo tachometer releases an infrared light beam that’s directed to the reflective target. When the light beam hits the target, it’s reflected back to a light sensor housed within the tachometer. If the component is steadily rotating, the tachometer will count the amount of times it gets a reflected signal giving a reading in RPM.
If you need assistance selecting or configuring a tachometer for your speed measuring application please contact us at toll free 1.866.363.6634 or email us at [email protected].
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