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Professional Digital Laser Photo Non Contact Tachometer - Accurate to 99,999 RPM Measurement Tool
Highly accurate, scientific tool with Digital Laser photo technology and 6Mhz crystal oscillator. Easy to operate for professional measurement and diagnostic test results: attach small strip of standard adhesive reflective tape (included) to object, aim and measure--RPMs instantly display on large LCD screen. Includes custom protective cushioned storage case, 3 AA batteries, instructions and 24" of reflective tape (additional tape widely available at hardware and other stores.) One-year warranty and Satisfaction Guarantee.
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Professional Digital Laser Photo Non Contact Tachometer - Accurate to 99,999 RPM Measurement Tool Reviews
It has a min and max RPM function, showing the variations in the speed from the measurement. To measure things like fans, you could simply hold the tape behind the fan, and beam the laser through the rotating fan blades. They should last quite a while though, using only 40mA during the measurement. The sensor in the tach picks up the pulses and performs the measurement, displaying in 0.1 RPM steps for speeds up to 999.9 RPM, and 1.0 RPM steps from 1000 to 99999 RPM. If you cut a square off from the two strips of supplied reflective tape and just use some scotch tape to temporarily attach it to the object being measured, you can reuse it over and over-. You'll need to simply divide the measurement by the number of fan blades, since it'll read multiple counts per revolution. 3 AA batteries for economical use with common rechargeables, after the three supplied batteries eventually get used up. The laser tach works as well as you'd expect, measurement range with the reflective tape is 6 feet or more (not sure where Amazon's 500mm description came from, but it's wrong).
The device sends out a beamed laser spot that gets reflected by the tape or any suitably reflective surface. Very neat item to have around. The fan blades will chop the light signal to provide the measurement. The display only comes on when the buttons are actually depressed, so it uses only the minimum amount of battery power- also means it cam't be used for extended unattended measurement however.
Very good and accurate. I use it to tune my '77 Corvette. Other than that, it is very good product, it comes with all you need to make it work. The only drawback I can find, is that you have to keep a switch depressed while you are using it.
Also, I don't expect the included vinyl plastic storage/travel case to hold up very well. Will buy more as needed.
Payed $70+ last year for the same unit. Can't beat the price.
Bought a number of these for work. They function well.
Otherwise, good product and great price.
The plastic case seems flimsy, so we'll see how they hold up in the field.
Doesn't get any easier. I'm using it mostly for checking speed of my woodworking equipment (lathe, drill press, router, etc). In some cases, the reflective top is not necessary. Apply reflective tape (included), point and shoot.
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