Photometers: Accurate testing of luminous intensity
In the workplace, photometers are used to regularly measure the light intensity. This is intended to ensure that the distribution of lighting and its intensity in the relevant workplace are correct and that the lighting conditions there are optimal. Employees in a company can only work efficiently if their working environment is sufficiently illuminated. It is also a question of safety, because only with sufficient light intensity can errors in the operation of machines and systems be prevented. In addition, fatigue is reduced if the light in the workplace is appropriately bright. Photometers are therefore used to measure the following criteria, as well as others:
Lighting distribution and intensity in the workplace
Optimal lighting conditions in public buildings
Light distribution measurement at trade fairs and exhibitions
Smart, intuitive measurement programs including HVAC grid measurement as per EN ISO 12599 and ASHRAE 111, PMV/PPD and turbulence as per EN ISO 7730 and ASHRAE 55
High-precision, location-independent and integrated differential pressure sensor
Intuitive: clearly structured measurement menu for long-term measurement and determination of illuminance according to the V-lambda curve , thus for all common light sources
Precise: standard-compliant accuracy according to DIN EN 13032-1 and class C according to DIN 5032-7
Intuitive: clearly structured measurement menus for volume flow, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
Intuitive: clearly structured measurement menus for volume flow, K-factor, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
Intuitive: clearly structured measurement menu for long-term measurement and determination of illuminance according to the V-lambda curve (suitable for all common light sources)
Precise: standard-compliant accuracy according to DIN EN 13032-1 and class C according to DIN 5032-7
Measuring luminous intensity: Photometers for all requirements
Can lux be measured? Photometry has the answer to this question, with a photometer being the perfect tool for the job. One lux means that a luminous flux with the power of one lumen is uniformly distributed over a surface area of one square metre. A photometer is therefore also dubbed a “lux meter”, because it measures the illuminance. Different devices are available for all applications:
multifunction measuring instruments for measuring light and IAQ parameters
Smart, intuitive measurement programs including HVAC grid measurement as per EN ISO 12599 and ASHRAE 111, PMV/PPD and turbulence as per EN ISO 7730 and ASHRAE 55
High-precision, location-independent and integrated differential pressure sensor
Intuitive: clearly structured measurement menu for long-term measurement and determination of illuminance according to the V-lambda curve , thus for all common light sources
Precise: standard-compliant accuracy according to DIN EN 13032-1 and class C according to DIN 5032-7
Intuitive: clearly structured measurement menus for volume flow, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
Intuitive: clearly structured measurement menus for volume flow, K-factor, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
Connections for 2 probes – position the data logger discreetly in the base of a display cabinet and monitor the micro-climate in the cabinet with the connectable probes
Blends in perfectly with the surroundings thanks to an optional, customisable deco-cover
Testo's photometers are characterized by their compact design, and they make it possible to measure light very simply and within a very short time. The sensitive, high-precision sensors are adapted to the spectral sensitivity of the human eye or correspond to it. Thanks to the Hold function, the measured values are easy to read off. The large display also allows reading off from different angles.
A photometer is used wherever it is important to have correct and sufficient distribution of light. Primarily in offices and in production, as well as in assembly halls and medical facilities, the lighting of a room or special area is of particular significance. Testo photometers measure light intensity and distribution with great precision and within seconds. Spot measurements are therefore also possible.
Photometers: Important specifications for high-precision instruments
The sensor plays a key role on the photometer. This is because its job is to perceive the light in the environment in a way that it can also be perceived by the human eye. The sensor must therefore perceive yellow and green light better than red or blue light. Other criteria for photometers are:
Well-structured operating menu
Intuitive operation
Large display
Assessment according to the V-lambda curve
Light meter: An indispensable aide for ensuring occupational health and safety
It is the job of the occupational health and safety department to ensure that eyes are also protected. These are often subjected to heavy stress in the workplace, which can be caused by computer work in the office or by varying lighting conditions in the production hall. The photometers are used to ensure that legal standards and specifications are being complied with. If everything is known about the existing lighting conditions, these can be adjusted according to the legal limits. In parallel with the photometer, a sound level meter is often used in the workplace, because volume also plays a key role when it comes to health and efficiency in the workplace.
More instruments for monitoring the workplace
In addition to the aforementioned sound level meters, an rpm measuring instrument can also be used. This complements the photometer and is suitable for measurements in production and air conditioning technology.
The CO measuring instrument also works with sensitive sensors and can detect even small concentrations of toxic carbon monoxide. If room air needs to be permanently monitored, the CO₂ measuring instrument from Testo is the ideal solution. In conjunction with the photometer, this measures the conditions in the workplace and thus ensures that changes can be made. Because you can only do something about bad figures when you know that they exist! If you know that the office is too dark or too poorly ventilated, you can search for solutions relating to the room's technology and architecture and offer your employees better conditions. In libraries, galleries and museums too, it is important to keep an eye on all the IAQ data, CO readings and luminous intensity in order to protect fragile objects.
Light meter: Built into the WiFi data logger
Photometers can measure luminous intensity. However, if they are to be stored and made available for an extended period of time, it is advisable to record the measured data in the data logger. Not only is it possible to measure light, but other data such as temperatures, humidity and UV radiation are also recorded. At Testo, data can be stored in the Cloud. Photometers are also available with external probes. The required probe, which, for example, is to be used to monitor extremely light-sensitive objects in an exhibition, is connected to the data logger. The readings are processed in the probe, which is extremely high-precision.
