English Datasheet

Photo Tachometer
Non-Contact rpm and speed measurements
From 2 to 6 inches (50 to 150mm) measurement distance from target
• Large 5 digit LCD display is easy to read
• Built-in memory recalls last MAX/MIN value stored
• Autoranging with 0.05% accuracy
• Non-contact measurements from 5 to 99,999rpm
• Use reflective marker on object to be measured and
point the integral light beam or accurate readings updated
every second
• 2 to 6 inches (50 to 150mm) measurement
distance (depending on ambient light)
• Complete with 23" reflective tape,
four AA batteries and case
Non-contact measurement on machinery where
access is limited
Range (rpm)
Sampling Time
5 to 99,999
±(0.05%rdg +1d)
1sec > 60rpm
0.1rpm (0.5 to 999.9rpm);1rpm (>1000rpm)
6.7 x 2.8 x 1.5" (170 x 27 x 37mm)
8.8oz (250g)
Ordering Information:
461893 ................Non-contact Photo Tachometer
461893-NIST ......461893 with NIST certificate
461937 ................Spare Reflective Tape (10 strips, 23" each)
Specifications subject to change without notice.
10/29/08 - R1
Copyright © 2008 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.