TA300 SmarTach D: Digital Diesel Engine Tachometer

  • QUICK HOOK-UP: Universal transducer clamp attaches quickly to fuel injection lines
  • ACCURATE MEASUREMENT: Advanced microcontroller technology yields 0.1 % accuracy
  • MULTI-PURPOSE: For 1 to 12 cylinders and 2-stroke or 4-stroke engines

USD $357.50

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The TA300 is a tachometer specially designed for use in diesel engines equipped with fuel injection pump and individual fuel injection lines. It uses a piezoelectric transducer clamp which is placed on one of the fuel lines for sensing the pulses caused by the surge of fuel pressure in it, and using these pulses to measure the RPM of the engine.

For maximum flexibility, the TA300 allows the user to adjust the sensitivity and threshold level of the piezoelectric sensor signal in order to adapt to a variety of engines and measurement conditions.

The TA300 is supplied with a 6′ (1.8 m) sensor cable and universal piezoelectric sensor clamp suitable for 1/4″ and 6 mm diameter fuel injection lines. Other sizes of piezoelectric sensor clamps are also available under special order.



  • Automobiles
  • Trucks
  • Boats
  • Marine engines
  • Heavy Machinery
  • Tractors, etc



  • Display: Large 4-1/2 Digits LCD + 2 x 3-1/2 Digits secondary displays (for Maximum, Minimum and other functions)
  • Tachometer Range: 200 to 19999 RPM
  • # of Cylinders: 1,2,3,4,5,6,8,10 and 12
  • Cycles: 2 and 4 Cycles
  • Accuracy: ± 0.1%
  • Response time: 0.5 Seconds
  • Threshold level: Adjustable between 20 and 80% of peak signal
  • Sensitivity: 10 levels selectable
  • Tachometer Sensor: Universal 6 mm Piezoelectric sensor
  • Cable: 6′ foot (1.8 m)
  • Power Source: One standard 9 Volt alkaline battery type NEDA 1604 IEC 6F 22
  • Battery life: Approx. 25 hours of operation
  • Power Saving: Auto power off after approximately 1 min. of inactivity
  • Physical dimensions : 6″ (H) x 4″ (W)x 1.5″ (D) (158 x 100 X 37 mm) – including holster but excluding cable and piezoelectric sensor
  • Weight: Approximately 14.4 Oz (405 g) – including holster, cable, piezoelectric sensor and battery



  Download Brochure (English)
  Download Manual (English)

Kit Manifest

  • TA300 (core unit)
  • Protective rubber holster
  • Hard padded case for carrying and storage
  • 6 mm universal piezoelectric pick up for diesel engines
  • 9 Volt alkaline battery
  • User’s Manual


Proposition 65 Warning ⚠

This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer, and Bisphenol A (BPA), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov.