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Ex-sensors
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| The 46B Ex n Series |
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The sensors of the 46B series were developed with protection type "n" according to EN 60079-15: 2005 especially for Category 3, Zones 2 ("Gas") and 22 ("Dust") and satisfy the requirements of the 94/9/EC directive. The sensors are accommodated inside a metal casing for protection against mechanical damage. This ensures that even the highest knocking test demands up to 7 joules are safely complied with.
The product spectrum encompasses all known operating principles such as throughbeam photoelectric sensor, retro-reflective photoelectric sensor or scanner with or without background suppression.
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| Intrinsically safe sensors of the 92 Ex series |
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These are designed either as a single-beam light barrier, as a reflection light barrier or as a reflection light button, and can detect objects reliably at distances between 300 mm and 12 m. The intrinsically safe ATEX sensors communicate the switching signals by way of the NAMUR interface to the VS 403 isolating switching amplifiers. Sensors of this series may be used in zones 1 and 2 in areas where there are potentially explosive gases and dust. |
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| VS 403 isolating switching amplifiers |
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The VS 403 isolating switching amplifier makes it possible to effect an intrinsically safe circuit for the sensors of the ‘92’ series. The sensors are supplied with power and the switching signals communicated by way of the NAMUR interface. This isolating switching amplifier, which is certified in keeping with the most recent ATEX directives, is obtainable either with a 24 V power supply and relay/transistor output, or with an AC power supply of 110 to 240 V and relay output.
For setting up the intrinsically safe circuit, Leuze electronic also offers blue cables with M12 circular plugs to connect the sensor to the isolating switching amplifier.
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The ILS 50 single-beam light barrier
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This comes in an M42 circular housing, and was designed specifically for use in ‘Ex’ zones 1 and 21. Its manufacture incorporates a flameproof enclosure, so it can also be used in areas where potentially explosive dust is found. With the integrated testing facility of the transmitter and the built-in monitoring for dirt accretion, the status of the light barriers can be checked at any time. The range of the sensors comes to 200 m.
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The 96 Ex n series
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This series has been specifically developed for use in ‘Ex’ zones 2 and 22. In keeping with the requirements of Directive 94/9 EC and protection type ‘n’ (as defined by EN 50021), device category 3D and 3G, the sensors of this series incorporate a shatter-proof cover for the lens, made of a special plastic material, and cable glands that are certified in the Ex ‘e’ class. The 96 series includes all the various functional principles, being available either as a single-beam light barrier, as a reflection light barrier or as a reflection light button.
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The ODS 96 Ex d optical distance sensor in an explosion-protected design variant
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This ODS 96 is incorporated in a flame-proof housing, and without any further protective measures can be used for distance measurements up to 5 m in ‘Ex’ zones 1 and 21. This optical distance sensor can therefore replace the ultrasound sensors which can no longer be used in these zones without modification.
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Ident system RFM 32Ex - Transponder reader for Ex zone 2
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Identification is also an issue in Ex applications.
Systems often have a mixed design, i.e. some sections are subject to explosion hazards, others are not. Available especially for surface-treatment applications (immersion baths, varnishing machines, drying etc.) as an extension of our RFID devices for Ex Zone 2 (ATEX) is the RFM 32 SL 200 Exn device with long cable (10m).
The function scope corresponds to that of the "standard device" RFM 32 SL 200 (operating range up to max. 110mm). Depending on the application, several other transponders with ATEX approval (Zone 2) are available for selection in addition to our standard selection of transponders.
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| KONTURflex Ex |
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KONTURflex Ex, answering to protection class “n”, is now available for applications in zones 2 (gases) and 22 (non-conductive combustible dust). KONTURflex EX proves its value in connection with paint-spray units, for instance, where it can direct the jetted streams of liquid or pulverised paint in such a way as to match the contours of the objects that are being coated, thus making the operation a great deal more economical.
This means that it fulfils the requirements of the ATEX Directive 94/9/EX, Appendix X, which has been binding since 07/03.
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| COMPACT Ex1 |
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| The tried and tested safety light curtain of the COMPACT range (type 4 as defined by EN 61496-1,-2) is now available under the label COMPACT Ex1, for selected heights of protective field up to 1500 mm and in a pressure-resistant glass housing of protection class “d”. COMPACT Ex1 is suitable for use with applications in Ex zones 1 (gases) and 21 (dust), e.g. in automated paint-spray lines. This means that it fulfils the requirements of the ATEX Directive 94/9/Ex, Appendix X, which has been binding since 07/03.
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| COMPACT Ex2 |
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| For applications in EX zones 2 (gases) and 22 (non-conductive combustible dust), the type 4 COMPACT safety light curtain is now available in the COMPACT Ex2 design variant, with impact-resistant interlocking front plates, likewise for selected heights of protective field and answering to protective class “n” (non-sparking).
This means that it fulfils the requirements of the ATEX Directive 94/9/EX, Appendix X, which has been binding since 07/03.
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