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Extech Instruments 461920 User Manual
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Extech Instruments 461920 User Manual

Mini laser photo tachometer / counter
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USER MANUAL
Extech Mini Laser Photo Tachometer /
Counter — Model 461920

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Summary of Contents for Extech Instruments 461920

  • Page 1 USER MANUAL Extech Mini Laser Photo Tachometer / Counter — Model 461920...
  • Page 3 Introduction Congratulations on your purchase of the Extech Mini Laser Photo Tachometer / Counter, Model 461920. This instrument provides non-contact RPM (rota- tions per minute) and Count (revolutions) measurements. The laser pointer al- lows for accurate measurement targeting. This instrument is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
  • Page 4 Description 1. Sensor and laser source 2. Optional AC adapter connector 3. LCD 4. Memory MEM button 5. Mode button 6. Measure / Laser pointer button The battery compartment is located on the back of the meter. #NAS100117; r. AA/86449/86449; en-US...
  • Page 5 Safety CAUTION Rotating objects can be dangerous. Use extreme care. WARNING Do not directly view the laser beam or point it toward the eyes. Low power visible lasers do not normally present a hazard but may present some potential for hazard if viewed directly for extended periods of time. See laser safety information below and on meter label.

  • Page 6: Meter Operation

    Meter Operation 4.1 RPM Mode (Rotations per Minute) 1. To set the meter to measure RPM, press and release the Measure but- ton and then use the MODE button to select RPM on the display. 2. Apply an appropriately sized square piece of reflective tape (typically 0.5 in.

  • Page 7: Battery Replacement

    Battery Replacement The low battery indicator appears on the display when the battery needs replacing. To replace the battery, open the rear battery compartment by re- moving the two Phillips head screws. Replace the 9 V battery observing cor- rect polarity. Secure the battery compartment cover before using the meter. Do not dispose of used batteries or rechargeable batteries in house- hold waste.

  • Page 8: Specifications

    Specifications 6.1 General Specifications Time base Quartz crystal Display type 5 digit (99999) LCD Laser type Class 2 laser ≤1 mW power @ 630 to 670 nm Detection distance 2 to 20 in. (50 to 500 mm) Sampling time 0.5 seconds (> 120 RPM) Reflective tape Replacement part no.

  • Page 9: Two Year Warranty

    Two-year Warranty FLIR Systems, Inc. warrants this Extech brand instrument to be free of defects in parts and workmanship for two years from date of shipment (a six- month limited warranty applies to sensors and cables). To view the full war- ranty text please visit: http://www.extech.com/support/warranties.
  • Page 10 #NAS100117; r. AA/86449/86449; en-US...
  • Page 12 USER MANUAL last page Website http://www.flir.com Customer support http://support.flir.com Copyright © 2022, FLIR Systems, Inc. All rights reserved worldwide. Disclaimer Specifications subject to change without further notice. Models and accessories subject to regional market considerations. License procedures may apply. Products described herein may be subject to US Export Regulations.