461880-EU-EN v2.5 7/13 2
Introduction
Congratulations on your purchase of the Extech 461880 Vibration Meter and Combination Laser
Tachometer. The 461880 Vibration functions have a frequency sensitivity that meets ISO-2954,
and measure Acceleration, Velocity and Displacement.
A 1000 point datalogger allows recording of data for download to a pc with included software. The
Tachometer functions provide contact RPM and Linear Surface Speed, as well as non-contact
RPM measurements. The 461880 is shipped fully tested and calibrated and, with proper use and
care, will provide years of reliable service.
Features
Vibration Function Features:
Measures Acceleration from 0.5 to 199.9 m/s
2 , 0.05 to 20.39 G or 2 to 656 ft/s
2
Measures Velocity from 0.5 to 199.9mm/s, 0.05 to 19.99 cm/s or 0.02 to 7.87 in/s
Measures Displacement from 0.005 to 1.999 mm or 0.002 to 0.078 inches
RMS measurements for Acceleration and Velocity
Peak to Peak measurements for Displacement
Peak function for Acceleration and Velocity
Max Hold function for Acceleration (Peak), Velocity (Peak) and Displacement (Peak to
Peak)
Frequency range from 10 Hz to 1 kHz meets ISO 2954 standards
Zero function
1000 point datalogger with adjustable sample rate
Hold function freezes measured value on display
MAX/MIN function to record maximum and minimum measured values
Auto Power-Off conserves battery power
Separate vibration sensor with magnetic mount included
Tachometer Function Features:
Photo and Contact Tachometer functions
Laser light source with long measuring distance, up to 1.5 meters (4.9 feet)
Wide measurement range from 0.5 to 100,000 RPM
0.1 RPM resolution ,<1000 RPM, 1 RPM resolution ≥1000 RPM
Memory function with recall saved MAX, Min and Last Reading values
Microprocessor with crystal time base provides 0.05% accuracy
General Features:
Large LCD display
Low Battery indicator
High Performance microprocessor based circuitry
Compact Heavy Duty housing
Hard Carrying case
