Support / Service
Basic information on explosion protection
and the marking of explosion-proof equipment.
BASICS EXPLOSION PROTECTION
What are the Causes for an Explosion
Basically there are three factors that must be encountered when creating a potentially explosive area. Presence of oxygen, an explosive medium and an ignition source. The absence or avoidance of one of the three factors prevents an explosion.
Based on this fact, the three possible strategies to avoid an explosion:
Primary Explosion Protection
Measures which prevent or limit the formation of a potentially explosive atmosphere (avoiding explosive atmospheres).
Secondary Explosion Protection
Measures which prevent the ignition in a dangerous explosive atmosphere (avoiding of ignition sources).
Tertiary Explosion Protection
Measures limiting the effects of an explosion to a safe level (constructional explosion protection).
Thus, the components put on the market by pi are protected to be no sources of ignition and thus are a measure of secondary explosion protection.
Zones – Explanation and Classification
Hazardous areas in which potentially explosive environments can form are classified in zones according to the duration of the potential formation of a dangerous explosive environment
For gases, these are zones 0, 1 and 2. In the case of dusts, a distinction is made between zones 20, 21 and 22.
Classification of Zones for Gases:
Zone 0
A dangerous, explosive atmosphere as a mixture of air, combustible gases, vapors or mists is constantly, for long periods of time or frequently present.
Zone 1
A hazardous, explosive atmosphere as a mixture of air, combustible gases, vapors or mists is occasionally present during normal operation.
Zone 2
A dangerous, explosive atmosphere as a mixture of air, flammable gases, vapors or mists is usually not available or only for a short time.
Classification of Zones for Dusts:
Zone 20
A dangerous, explosive atmosphere in the form of a cloud of combustible dust is constantly, for long periods or frequently present.
Zone 21
A dangerous, explosive atmosphere in the form of a cloud of combustible dust is occasionally present during normal operation.
Zone 22
A dangerous, explosive atmosphere in the form of a cloud of combustible dust is usually not available or only for a short time.
Legal Basis
As a legal basis for the area of explosion protection, the following norms and regulations apply in addition to the usual standards:
ATEX Directive 2014/34/EU
EU Explosion Protection Ordinance ExVo
Ordinance on Industrial Health and Safety
Also, a distinction is made between operator and manufacturer.
Accordingly, the different labeling:
Labelling of explosion-proof electrical devices
Frequently Asked Questions (FAQ) about Support & Service at pi safety
All relevant product documentation, technical data sheets, user manuals, and certificates are available in our download area. This gives you quick access to all important information at any time.
Our experienced team of technicians and engineers is available to answer all your technical questions. We provide direct and straightforward technical support to ensure you can use our products in the best possible way. Please write to us via our contact page or give us a call.
We attach great importance to personal communication. You can reach us at any time via our contact form on the website, by email, or by phone to be connected directly with the right expert for your inquiry.
Yes. As your system partner for explosion protection, we are happy to provide professional advice in selecting the right components for your specific application. Simply contact our team.
“Made in Germany” is not only a quality promise for our products but also for our service. It stands for reliable, competent, and direct support from our team based in Teuschnitz, Germany.