This document describes the features and characteristics of the Extech Instruments Corporation's model 461891 contact tachometer, including a large LCD display, built-in memory, autoranging, contact rpm measurements from 0.5 to 19,999rpm, linear surface speed measurements, and accessory wheels.
This document provides the specifications and features for the Extech 461891 Contact Tachometer. The device features a large 5-digit LCD display and built-in memory to recall the last maximum or minimum value stored. It supports autoranging with an accuracy of 0.05%.
| Range (RPM) | 0.5 to 19,999rpm |
|---|---|
| Range (ft/min) | 0.2 to 6560ft/min |
| Accuracy | ±(0.05%rdg +1d) |
| Sampling Time | 1sec>6rpm |
| Resolution | 0.1rpm (0.5 to 999.9rpm); 1rpm >1000rpm |
| Dimensions | 6.7 x 2.8 x 1.5" (170 x 27 x 37mm) |
| Weight | 9.2oz (260g) |
The device measures contact RPM from 0.5 to 19,999rpm.
The tachometer measures linear speeds up to 6560ft/min.
The autoranging function provides an accuracy of 0.05%.