This document provides specifications and features for the Extech 461895 and 461995 Combination Contact/Photo Tachometers. The devices combine both contact and non-contact measurement capabilities, with the 461995 model offering a laser-guided option for greater distance non-contact measurements.
Key features include a unique display that reverses characters depending on the measurement mode, a large 5-digit LCD, and a microprocessor-based design with a quartz crystal oscillator. The tachometers store last, maximum, and minimum readings and provide measurements in RPM and linear surface speed.
| Accuracy | 0.05% rdg +1 digit |
|---|---|
| Resolution | 0.1rpm (< 1,000 rpm) |
| Power | 4 AA batteries |
| Dimensions | 8.5 x 2.6 x 1.5" |
| Weight | 10.6 oz (300 g) |
| Photo mode Range (461895) | 5 to 99,999 RPM |
| Photo mode Range (461995) | 10 to 99,999 RPM |
| Surface Speed | 0.2 to 6560ft/min |
The measurement range for the 461895 in photo mode is 5 to 99,999 RPM.
The measurement range for the 461995 in photo mode is 10 to 99,999 RPM.
The tachometers require four 1.5V AA batteries.
Yes, the 461995 model includes a narrow beam Laser photo tachometer for accurate non-contact RPM measurements.