Specifications subject to change without notice.
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www.extech.com 11/27/13 - R1
For Contact rpm measurements
Plus Linear surface speed measurements in ft/min or m/min
Contact Tachometer
Features:
• Large 5 digit LCD display is easy to read
• Built-in memory recalls last MAX/MIN value stored
• Autoranging with 0.05% accuracy
• Contact measurements from 0.5 to 19,999rpm plus
linear surface speed measures in ft/min or m/min
• Simply contact rotating object with sensor tip and read
• Accessory wheels enable tachometer to
measure linear surface speeds
• Complete with cone tip, flat tip and
spare wheel for surface speed measurements,
four 1.5V AA batteries and case
Ordering Information:
461891 ................Contact Tachometer
461891-NIST ......461891 with Calibration Traceable to NIST
461990 ................Set of Spare Contact Wheels (2 sets of 3)
Specifications
Range 0.5 to 19,999rpm
0.2 to 6560ft/min
0.05 to 1999.9m/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)
Accessory wheels enable tachometer to measure
linear speed surfaces
