Specifications subject to change without notice.
Copyright © 2008 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
www.extech.com 6/13/08 - R1
Combines both contact and non-contact models
Choice of Laser-guided model for greater distance non-contact measurements
Combination Photo/Contact Tachometers
Features:
•Unique display where characters reverse direction
depending on measurement mode you are in
•Large 0.4” (5 digit) LCD display
•Microprocessor based with quartz crystal oscillator
to maintain high accuracy
•Tachometer memory stores last, max and min readings
•Provides wide RPM (photo and contact) and
Linear Surface Speed (contact) measurements
•Accurate to 0.05% with max resolution of 0.1rpm
in either photo or contact mode
•Complete with tips and wheel for rpm or linear surface speed,
four 1.5V AA batteries, reflective tape and carrying case
Additional Features (461995):
•Narrow beam Laser photo tachometer
for accurate non-contact RPM measurements
•Measurements from up to 6.5ft from the
target for improved safety and accessibility
Ordering Information:
461895 ................Combination Contact/Photo Tachometer
461895-NIST ......461895 with NIST certificate
461995 ................Laser Photo/Contact Tachometer
461995-NIST ......461995 with NIST certificate
461937 ................Spare Reflective Tape (10pk, 23" each roll)
461990 ................Set of Spare Contact Wheels (2 sets of 3)
Specifications for both models Photo mode Contact mode
Range (RPM) 461895 5 to 99,999 0.5 to 20,000
Range (RPM) 461995 10 to 99,999 0.5 to 20,000
Accuracy 0.05% rdg +1 digit
Sampling Time 1 Sec > 60rpm 1 Sec > 6rpm
Surface Speed 0.2 to 6560ft/min
0.05 to 1999.9m/min
Resolution 0.1rpm (< 1,000 rpm)
1rpm (>1000rpm)
Power 4 AA batteries
Dimensions 8.5 x 2.6 x 1.5”(215 x 65 x 38 mm)
Weight 10.6 oz (300 g)
