Sound / RPM / LUX

The testo 815 sound level meter can be used for control measurements in the air conditioning and heating area, on combustion systems or at workplaces. It can also enable quick and precise assessment of machinery and discotheque noise.

Applications of the testo 815 sound level meter

• Heating technology: measurement of the volume of burners
• Industry and trade: measurement of machinery noise
• Event technology or public authorities: noise levels at events
• Building services: simple measurements by the caretaker when there are complaints 

Do you need to measure the rpm of rotating objects or record the length and speed of conveyor belts and rotors? The testo 470 RPM measuring instrument is a compact tool that makes it possible to carry out these measurements.

Multiple functions in one digital tachometer

In the case of optical rpm measurement, you can use the testo 470 RPM measuring instrument to record how fast a rotating object rotates. Thus, for example, you can check whether motors, shafts and fans are functioning correctly in order to spot any impending defects due to overload at an early stage.

For rpm measurement, simply stick a reflective marker on the measurement object and aim the visible red beam at the reflective marker. The measurement can then start (at a distance of up to 600 mm between digital tachometer and measurement object). The digital tachometer is easy to operate using one hand.

However, the testo 470 RPM measuring instrument not only provides the functions of an optical tachometer, it also functions as a mechanical tachometer: Attach the adapter for the probe tip and measure the rpm mechanically. Attach the wheel to also measure speeds and lengths of rotors/conveyor belts.

Use the testo 440 air velocity and IAQ measuring instrument in combination with high-quality probes to measure and store all air velocity and IAQ parameters (please order probes separately). Up to 3 probes can be connected simultaneously: a Bluetooth probe, a wired probe and a temperature probe with type K thermocouple connector. Automatic probe detection and clearly structured measurement menus guarantee simple operation and will make your day-to-day work easier.

Use the lux probe with the compatible testo multifunction measuring instrument (please order separately) to determine illuminance. 

Lux probe – features

The lux probe is ideal for determining the illuminance in workplaces. It assesses the illuminance according to the V-lambda curve, which corresponds to the sensitivity of the human eye in daylight. White or warm light LEDs (K< 5,000) can also be measured without any problem.

The 1.4 m cable length means that you can place the probe directly at the measuring location and carry out the measurement from a sufficient distance. So the readings are not affected by your shadow.

The clearly structured measurement menu for long-term measurement enables the measuring instrument to be operated intuitively. Reading trends are reliably recorded thanks to the convenient input of measurement time and measuring cycle.

Intelligent calibration concept

You will get exceptionally accurate measurement results with the digital probe, because the measuring instrument makes measurement uncertainty a thing of the past. You only need to send the probe in for calibration – so the measuring instrument remains in continuous use.

Areas of application for the lux probe

Light conditions play an important role, particularly in the ergonomic assessment of workplaces. In order for light to also be good light, the illuminance must meet certain minimum values.
Use the lux probe to check the illuminance in offices and production areas, hospitals, museums or schools with reliability.

The testo 540 lux meter can be used to measure both artificial and natural light and provides you with a quick and easy means of measuring lighting conditions in the workplace.
The testo 540 lux meter: compact, easy-to-use, precise
The testo 540 lux meter is a pocket-sized entry level model designed specifically for carrying out spot checks in the workplace, shops and offices. The light sensor is modelled on the spectral sensitivity of the human eye and is ideal for measuring lighting conditions in a variety of different workplaces.

The compact, easy-to-use lux meter has a number of useful functions and features including a large, easy-to-read display, min/max values which can be shown at the touch of a button, a hold function that allows you to freeze the last reading and a protective cap for safe storage.

The top-of-the-range testo 816-1 dB meter for sound level measurement complies with all requirements with regard to the execution of non-conform sound level measurements according to IEC 61672-1 Class 2 and ANSI S1.4 Type 2. This makes it suitable for carrying out sound level measurements in the workplaces as well as in public places, industry and production.
The testo 816-1 has all the features which its little variant, the testo 816, has but also comes with a built-in data logger that can save up to 31 000 readings and dedicated PC software.

The dB meter for pros: measure, save, analyse
The testo 816-1 also comes with a practical all-in-one carry bag and a whole host of technical features and benefits designed to allow you to carry out professional sound level measurements as a part of health and safety inspections and immission controls. Benefits include being able to change the measuring rate from slow (one measurement per second) to fast (one measurement every 125 milliseconds) depending on the type of measurement, and being able to select between two frequency measurement types: the characteristic curve A corresponds to the way the human ear perceives sound pressure while the characteristic curve C measures the low frequency percentage of the sound.

In addition, you can also use the optional sound calibrator and the screwdriver included in the scope of delivery to recalibrate your testo 816-1 dB meter on site wherever you are.

The dB meter also has a backlit display for use in all lighting conditions.

But that is by no means all: the testo 816-1 sound measuring instrument has an internal data logger that can save up to 31 000 measurements and comes with a USB cable which allows you to hook your meter up to a PC and transfer the data directly, and dedicated PC software designed to help you manage and analyse the data you have collected.

With the testo 465 tachometer, you can perform non-contact rpm measurement using just one hand. This makes the tachometer suitable, for example, for measurements on rotating parts such as fans and shafts. To measure the rpm, simply stick a reflective marker on the measurement object, aim the visible red beam at the marker and measure the rpm. The distance between the tachometer and the measurement object can be up to 600 mm.

A particularly practical feature is the option to save min./max. and mean values, as well as the last measured value. The SoftCase included in the scope of delivery is useful for protecting the tachometer. The scope of delivery also includes reflective markers and a transport case.

Pocket-sized testo 460 RPM meter provides you with quick and reliable readings when carrying out checks on fans, crankshafts and motors. And because the checks can be performed while the machines are still running, there’s no need to stop production or shut down machinery.

Carrying out measurements with testo 460 RPM meter

Remove the lightweight meter from the practical belt bag and place the hand strap gently around your wrist to prevent your RPM meter from accidentally falling onto the floor. The compact RPM meter is now ready for use.

Attach the self-adhesive reflective markers,which can be reordered at any time, to the measuring object. The RPM meter transmits an LED measuring spot which marks the center of the measuring area. The measuring spot is now aligned to the reflective marker.

That’s all there is to it! You can now use your testo 460 RPM meter to carry out quick and accurate measurements on the measuring object from any distance between 10 and 40 cm.

The testo 460 also has a hold function that freezes the last reading on the display for added convenience and a backlit display that makes it ideal for use in all lighting conditions. Min/max values can be accessed at the touch of a key.

Replace the protective cap and return the RPM meter to the belt bag where it can be stored safely until you next need it.

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.

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