Testo 470 Digital Tachometer

Testo 470 Overview

The Testo 470 tachometer is a compact tool that makes a wide range of speed measurements possible. The Testo 470 carries out rpm measurements on motors, shafts, fans and more, both without contact using a reflective marker (from up to 600 mm away) and mechanically using a contact adapter. Fit one of the measuring wheels and you can also determine speeds and lengths, for example of conveyor belts and rotors.

Designed for efficiency and ease of use, the testo 470 is compact, ergonomic and built for professionals. It automatically stores the mean, maximum and minimum values, and is ideal for engineers, maintenance teams and field technicians who need reliable speed and length measurement in one instrument.

Who the Testo 470 is for

The Testo 470 is for maintenance and reliability technicians, HVAC fan engineers and production staff who check motor and shaft speed in one round and belt speed or length in the next. If you only ever take non-contact readings, an optical-only tachometer is simpler; the 470 earns its place when contact readings and wheel measurements are part of the job.

Figures from the testo 470 data sheet (0981 9924) that buyers ask about:

• Optical resolution of 0.01 rpm up to 99.99 rpm, 0.1 rpm up to 999.9 rpm and 1 rpm above that
• With the 0.1 m wheel it reads 0.10 to 1999 m/min and lengths up to 99999 m, in rpm, m/min, ft/min, in/min, m, ft or in
• Wheel readings carry a 0.2% mechanical tolerance and depend on contact pressure and angle
• 2 AA cells last about 40 hours, with a Low Batt warning; works from 0 to +50 °C
• 175 × 60 × 28 mm and 190 g, protected by a SoftCase

Browse our tachometers category or the Testo brand page. For optical-only readings, compare the Testo 465 and the Testo 460; the Fluke 931 is another contact and non-contact option. Every figure above is in the official testo 470 data sheetPDF.

Testo 470 Key Features

Highlights of the Testo 470:

• Optical (non-contact) and mechanical (contact) rpm measurement
• Also measures speed and length of conveyor belts and rotors
• Optical range 1 to 99,999 rpm at ±0.02% of reading; contact range 0.1 to 19,999 rpm at ±0.2%
• Stores mean, maximum and minimum values plus the last reading
• Supplied with a probe tip, 0.1 m and 6″ measuring wheels and reflective markers
• Compact, ergonomic design for one-hand operation

Testo 470 Applications

Common Testo 470 tasks:

• Speed checks on motors, shafts and fans
• Conveyor belt and rotor speed and length measurement
• Maintenance and service of rotating and moving machinery
• HVAC and production condition monitoring

What comes with the Testo 470

Inside the Testo 470 case:

• Testo 470 digital tachometer in its protective SoftCase
• Contact adapters with probe tip, plus 0.1 m and 6″ measuring wheels
• Self-adhesive reflective markers
• Transport case
• Batteries and test protocol

Testo 470 FAQ

Common questions about the Testo 470:

• Do I need reflective markers for optical readings? Yes. Stick a marker on the shaft or pulley and aim the beam at it; spare packs of five 150 mm markers are part no. 0554 0493.
• How far away can the Testo 470 read optically? Up to 600 mm between the instrument and the marker.
• Can the Testo 470 measure conveyor belt speed? Yes. With the 0.1 m wheel it covers 0.10 to 1999 m/min; with the 6″ wheel 0.10 to 1524 m/min.
• How accurate is contact mode? ±0.2% of reading ±1 digit for mechanical rpm, compared with ±0.02% for optical rpm.

Why buy the Testo 470 from MME

At MME (MOHAMMAD MAHDI Electronics Trading LLC) we can help you choose between the Testo 470 and an optical-only tachometer, with competitive pricing and knowledgeable local support, and can quote spare reflective markers or the 12″ wheel for long belt runs. Download the datasheetPDF