MAXIMUM SAFETY AND OPTIMAL VISIBILITY AT THE WORKPLACE
Gases, vapors, dust and mists: Explosive atmospheres can occur in numerous companies - in the chemical, food or pharmaceutical industries, on oil and gas production lines, but also in small businesses such as distilleries, automotive workshops, bakeries, sawmills and many others. Even minimal pulses can trigger critical situations here under certain circumstances. For plants within the EU in which explosive atmospheres due to gas or dust occur, the so-called ATEX operating directive of the European Union applies. In particular, it defines the employer's obligations for protection against explosions. This includes a classification of the existing explosion risks, which must then be used to select suitable work equipment. Anyone working in such an explosive environment must ensure maximum safety when using electronic equipment. This also applies to portable lamps, which could otherwise become a source of danger themselves.
The lamps in the Ledlenser EX and iL series have been specially developed and approved for use in potentially explosive environments. Depending on the application and the explosion risk during operation, the products can demonstrate different strengths, whereby the approval and suitability of the individual product must always be checked before use.
A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in the form of gas, vapor or a cloud of combustible dust is continuously present for long periods or frequently (e.g. in gas tanks or grain elevators)
Working areas in which explosive atmospheres in the form of flammable gases, vapors or dust clouds prevail occasionally.
Working areas in which explosive atmospheres in the form of flammable gases, vapors or dust clouds (e.g. in case of a gas leak) usually do not prevail / prevail only for a short time.
Classification according to probability and duration of the occurrence of explosive atmospheres
Explosive atmospheres are initially classified into different zones according to the probability and duration of their occurrence. The products in our EX series have several redundant protective devices and are ideal for areas where explosive atmospheres may be present during normal operation (zones 0, 1, 20 or 21). A product that is approved for areas with a high probability of occurrence may also be used in areas where Ex atmospheres are less likely to occur. For example, a lamp approved for Zone 0 may also be used in Zone 2 if the other requirements are met.
The products in our iL series are approved for areas in which explosive atmospheres do not or only rarely occur during normal operation. This makes it possible to achieve a higher light output, comparable to normal workshop and industrial luminaires. With their robustness and additional explosion protection, the lamps are perfect for all areas where explosive atmospheres are not normally expected, but where you still want to be on the safe side. So there is no loss of performance or safety.
Classification according to the properties of the explosive substances
When selecting products, it is also important to consider which explosive substances are present. Depending on the substance, hot surfaces or sparks can cause ignition more or less easily. For this reason, substances are differentiated according to their affiliation to a certain gas or dust group as well as ignition temperature.
Lamps must match the groups and ignition temperatures present, regardless of the zone classification. Gases are assigned to gas groups IIA, IIB or IIC. Group IIC gases are the most easily ignited by electrical sparks and therefore require the most stringent product requirements. Therefore, only lamps approved for Group IIC may be used in connection with Group IIC gases. However, lamps approved for IIC gases are also permitted in atmospheres with IIA or IIB gases. With a lamp approved for IIC gases, you are therefore prepared for all gas groups.
Similarly, the requirements for the lamp are highest in the presence of Group IIIC dust (electrically conductive dust). Products approved for dust group IIIC can also be used in dust groups IIIA and IIIB.
Lastly, the temperature rating of the lamp must be considered. Gas atmospheres are divided into temperature classes T1 (high temperature) to T6 (low temperature). For dust, the maximum surface temperature is specified directly, e.g. T135°C1. If the product may be covered by a layer of dust, this is also indicated, e.g. in the form T200135°C for dust layers up to 200mm thick.
¹It should be noted that this information does not have to refer to touchable surfaces and normal operation, but can also apply to internal components or fault cases. Normally, touchable parts are well below the specified temperature.
The table shows the assignment of various substances to gas and dust groups and temperatures:
Our portfolio of explosion-proof flashlights and headlamps is extremely versatile and suitable for different applications.
With the EX4 and iL4, we provide you with two extremely compact companions for all situations in which you need a light source for occasional activities (e.g. reading displays, searching in dark corners) that is otherwise not too bulky and can fit in any pocket. The EX4 meets even stricter Ex requirements than the iL4.
The EX7, EX7R, iL7 and iL7R models are flashlights for users for whom bright, tailored work light is important. The patented³ focusing system (Advanced Focus System) guarantees the famous Ledlenser light quality - absolutely unique in the field of explosion-proof lamps. So you can switch between focused high beam or uniform working light in seconds. Ideal for illuminating a large tank, for example, or performing a safety inspection on an aircraft while illuminating remote locations.
The EX7 (battery-powered) and EX7R (battery-operated) offer particularly high explosion protection for a wide range of applications with stringent requirements.
The iL7 (battery-powered) and iL7R (battery-operated) achieve greater brightness with slightly lower explosion protection and are ideal as high-intensity, robust lamps for everyday work while meeting relevant occupational safety criteria.
With the EXH8, EXH8R, iLH8 and iLH8R headlamps, we offer, analogously to the flashlights, various models tailored to different applications in which both hands must remain free for work. The EXH8 and EXH8R models are designed to meet the most stringent explosion protection requirements, while the iLH8 and iLH8R offer greater brightness.