Delivery Scope

Testo 477 LED stroboscope, carry case, trigger signal plug, calibration protocol and batteries

LED Hand Stroboscope - Testo 477
Model No: Testo 477 Part No: 0563 4770

Testo 477 LED Hand Stroboscope, carry out inspections and quality control of machines and systems, rotational speed measurements of hard-to-reach, small and fast-moving objects, even when the machines are still running.

  1. Very high light intensity of up to 1500 Lux

  2. Long operating time thanks to battery life up to 5 h

  3. Ideal for tough applications thanks to impact protection and IP65

  4. Trigger input and output

  5. High measuring range: up to 300000 flashes per minute (fpm)

The testo 477 LED stroboscope makes stunningly fast movements look as if they are taking place in slow motion. This allows you to check and inspect machines and systems while they are still running, and measure speeds of up to 300,000 rpm.

It is impossible to tell with the naked eye if the thread guide of a knitting machine is working properly. It is therefore equally impossible to tell if there are any irregularities in vibration or rotational processes of machines or systems. But it’s a different story with the testo 477 LED stroboscope. That’s because the stroboscope emits a series of flashes which makes what you see appear as a “frozen image”.

The testo 477 LED stroboscope can also measure the rotational speed of very small and hard-to-reach objects. And because there’s no need for reflex marks, there’s no need to stop the machines and no disruption to production processes either.

LED stroboscope – technical features

An extremely high measurement range of up to 300,000 flashes per minute (fpm) and a very high illumination of up to 1500 Lux allow you to carry out rotational speed measurements of up to 300,000 rpm. A trigger input and output ensure connectivity to external systems and control via an external sensor.

The LED stroboscope’s integrated impact protection and sturdy IP65 rated housing(which also allows it to be wiped down) ensure that the testo 477 can stand up to the rough and tumble of everyday use. And thanks to a longer battery operating time, you can carry out uninterrupted measurements for up to 5 hours.

Measuring range 30 to 300000 fpm
Accuracy 0.02 % of mv
Resolution ±0.1 (30 to 999 fpm), ±1 (1000 to 300000 fpm)
General technical data
Protection class IP65
Flash duration Can be adjusted
Flash intensity 1500 Lux at 6000 FPM / 20 cm
Flash colour Approx. 6500 K
Battery life NiMH rechargeable battery: Approx. 11 h at 6000 fpm; Batteries: approx. 5 h at 6000 fpm (3 x AA)
Display type LCD
Display size multiline
Reverse battery protection yes
Low level < 1 V
Maximum current 50 mA
  1. Speed measurements on ventilators, fans, and lathes

  2. Industrial maintenance and monitoring of product quality

Delivery Scope

Testo 476 hand-held stroboscope, including transport case, charger with 4 country-specific adapters and trigger signal connector

Digital Stroboscope - Testo 476
Model No: Testo 476 Part No: 0563 4760

Testo 476 hand-held stroboscope with high-intensity light. Ideal for rpm measurement and for the inspection of parts moving at high frequencies.

  1. High adjustment accuracy and stability thanks to setting wheel with dynamic reaction
  2. High-intensity light thanks to energy-optimzed switching electronics and high-performance xenon flash lamp
  3. Memory function (last value is stored when instrument is switched off)
  4. High-performance battery pack for min. 2 hours continuous operation without mains connection over entire frequency range
  5. Trigger input for synchronizing the flash sequence (longterm inspection)
  6. Tripod connection on housing

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

  1. Air conditioning/ventilation technology: monitoring/checking that HVAC systems are working properly
  2. Textile industry: monitoring of thread guides on knitting machines (extremely fast flash frequency needed)  
  3. Automotive industry: detecting vibration hotspots in exhaust systems
  4. Packaging machines: monitoring bottle sealing and labelling
  5. Metal foil production: monitoring product quality
  6. Vibratory conveying technology: checking for defects during operation
  7. Printing industry/flexo printing/label printing: monitoring print quality 
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
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
Get A Free Quote / Need a Help ? Contact Us