Extech 461750 Data Sheet
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
4/1/08 - R1
Choice of Contact or Non-contact Tachometer
For rpm and surface speed measurements
PocketTach® Mini Tachometers
Features:
• Large easy to read (99,999 count) LCD display
• Autoranging with 0.1% basic accuracy
• Hold button freezes displayed reading
• Ergonomically designed and pocket sized housing with
protective finger guard
• Easy to operate by simply contacting the
rotating object with the sensor tip and read
• 461750 Contact model with surface wheels enable
tachometer to measure linear surface speeds in ft/min,
m/min, and yd/min
• 461700 Non-contact integral light beam model with ideal
measurement range up to 6" (150mm) distance
• Complete with 9V battery; 461700 includes
reflective tape and 461750 includes surface wheels
Ordering Information:
461700 ................PocketTach® Mini Photo Tachometer
461700-NIST ......461700 with NIST certificate
461750 ................PocketTach® Mini Contact Tachometer
461750-NIST ......461750 with NIST certificate
Specifications 461700 461750
Display Counts 99,999 count LCD 99,999 count LCD
Range rpm 10 to 99,999rpm 10 to 20,000rpm
ft/min — 3 to 6560ft/min
m/min — 1 to 1999.9m/min
yd/min — 1 to 5,000yd/min
Basic accuracy ±(0.1%rdg +2d) ±(0.1%rdg +2d)
Sampling Time 1sec>60rpm, >1sec>10 to 60rpm
Max rpm Resolution 0.001 0.001
ft/min Resolution — 0.0001
Dimensions 4.88 x 1.97 x 1.3" 5.87 x 1.97 x 1.3"
(124 x 50 x 33mm) (149 x 50 x 33mm)
Weight 4oz (114g) 5oz (142g)
Non-contact model for use on machinery where access is
limited or high speed measurements are required
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