Handheld Contact Tachometer

The Ono Sokki HT Series is a range of handheld tachometers, suited to the measurement and maintenance of machinery with rotating parts.

Ideal for:

  • Measuring the speed of rotating parts in machinery and/or vehicles
  • Maintenance of machinery/vehicles with rotating parts
In stock Yes No
Price was € (Inc. VAT) RRP € Price was € (Ex. VAT) RRP €

The HT Series of handheld tachometers from Ono Sokki are lightweight and compact digital tachometers that are available is both contact and non-contact variants. The HT-3200 in a contact-type tachometer offers a low measurement range that starts from 0.5r/min, and the HT4200 is a non-contact instrument that allows measurements to be taken from multiple measurement marks on at low rotation speeds. 

Ono Sokki is one of the world's leading manufacturers of this type of instrument and Eurolec are the UK and Ireland's sole distributor of their products.

Key features:


  • Capable of measuring from a low speed of 0.5 r/min and a high speed of 10,000 r/min
  • A large digital display
  • Built-in memory that stores recorded data
  • Storage area for circumferential ring
  • Battery replacement indicator as standard
Detection method Contact method
Detection distance N/A
Display 5-digit LCD (10.5mm character height)
Measurement update date 1s automatic update (2s update for lo range: 0.5 to 1.0 r/min)
1s automatic update (2s update for hi range: 5 to 10 r/min)
Rotation speed measurement range 0.5 to 10,000 r/min
Lo: 0.5 to 2,000.0 r/min
Hi: 5 to 10,000 r/min
Circumferential speed measurement range When the KS-200 circumferential ring (provided) is used: 0.05 to 1000.0 m/min
When the KS-100 circumferential ring (option) is used: 0.5 to 10,000 mm/s
Measurement accuracy (for HT 4200, when one reflective mark is used) Low (lo) range: 0.5 to 1249.9 r/min speeds                       Within ±0.1 r/min
                          1250.0 to 2000.0 r/min speeds                 Within ±0.2 r/min
High 9hi) range: 5 to 10,000 r/min speeds                         Within ± 1 r/min
Measurement of the number of pulses N/A
Memory function 10 data can be memorised
Data hold function Auto-power off when 30 seconds have elapsed after the end of a measurement
Low battery indication The "LOW" mark is displayed when the battery voltage falls below 3.3 V
Over-range display An "ERROR" mark is displayed
Power source Three AAA-type batteries (1.5 V)
Continuous measurement time: approx. 20 hours (when alkaline batteries are used, at 20°C)
Operating temperature 0 to +40°C
Storage temperature -20 to +55°C
Outer dimensions 63 (W) x 172 (L) x 38.5 (D) mm
Weight (including batteries) Approx. 200g

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