Products, RPM, Testo

Hand-held stroboscope (Xenon) – testo 476


“The testo 476 hand-held Xenon stroboscope with high-intensity light allows fast-moving objects to appear in slow motion. In doing so, the hand-held stroboscope measures and checks rotational and vibratory movements. It enables measurement of very small objects or in inaccessible places – what is more, without any interruption to the production process. The testo 476 is therefore ideally suited for rpm measurement and for the inspection of parts moving at high frequencies.
Where the testo 476 hand-held stroboscope is used

Air conditioning/ventilation technology: monitoring/checking that HVAC systems are working properly
Textile industry: monitoring of thread guides on knitting machines (extremely fast flash frequency needed)
Automotive industry: detecting vibration hotspots in exhaust systems
Packaging machines: monitoring bottle sealing and labelling
Metal foil production: monitoring product quality
Vibratory conveying technology: checking for defects during operation
Printing industry/flexo printing/label printing: monitoring print quality

  • High adjustment accuracy and stability thanks to dynamic setting dial
  • High light intensity thanks to high-performance xenon flashlamp
  • High adjustment accuracy and stability thanks to dynamic setting dial
  • Extremely short flash duration (< 9 µs)
Delivery Scope

testo 476 hand-held stroboscope (Xenon) for rpm measurement, including transport case, charger with 4 country-specific adapters and trigger signal connector.


Download DataSheet Instruction Manual

Application Image

Technical Details

rpm – Xenon
Measuring range 30 to 12500 rpm
Accuracy ±0.01 % of mv
Resolution 1 rpm

General technical data
Life-time flash lamp 200,000,000 flashes
Illumination value 800 Lux at distance of approx. 20 cm
Flash colour 6000 to 6500 K
Connection external trigger 0 to 5 V DTL/TTL compatible; 3.5 mm / 1/8 Standard plug; Uout=7.2 V unregulated
Display type LCD
Display size one-line
Display function 5 digit LCD display
Battery conservation charging yes
Overload discharge protection yes
Battery deep discharge protection yes
Storage battery type NiMH rechargable battery pack
Battery charging time max. 3.5 h
Mains voltage rech. battery: 100 to 240 V, 50/60 Hz