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The Kub
The rupture disc excellence

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The Kub reverse acting rupture disc is ideal for an extensive range of demanding industrial processes with low to high operating pressures or vacuum. The Kub is suitable for gas, liquid, vapor and two phase flow applications. The Kub is also used as a secondary device for isolating and protecting safety valves.

Plant Construction, Engineering & Components Safety & Security

High service-life quality
Luminaires with optimised luminous efficacy

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Global explosion protection specialists, R. Stahl, launches the new generation of Exlux linear luminaires for use in Zones 1/21 and 2/22, anywhere in the world. The 6002/4 series models boast state-of-the-art LED technology, optimised energy efficiency and outstanding service life. Although the previous generation was efficient, these latest models are geared to surpass their predecessors, achieving 115 lm/W luminous efficacy with a diffusor and 145 lm/W luminous efficacy without a diffusor. The luminaires’ power consumption has also been further reduced: 22 W for the 700 mm-long version and 42 W for the 1310 mm-long version. Energy costs with these luminaires are around 40% less than with conventional fluorescent lamps.

The new generation of Exlux luminaires combines optimised luminous efficacy with excellent service life. (Picture: R. Stahl)

The new generation of Exlux luminaires combines optimised luminous efficacy with excellent service life. (Picture: R. Stahl)

The standardised design and functionality of the new Exlux units makes upgrading existing lighting systems much simpler thereby making the Exlux models the most ideal choice for customers wishing to switch to modern LED technology with optional DALI integration. They offer excellent service-life quality coupled with outstanding reliability and minimal maintenance. Even when they reach 100,000 operating hours, 90% of the original luminous flux is still guaranteed. For general lighting applications, R. Stahl’s Exlux 6002/4 series comes with neutral white light as a standard; alternatively, it is also available in warm white or cold white light.

In addition to these variants, which all achieve CRI values of more than 80, the company also offers Exlux 6002/4 versions with yellow light. To minimise dazzling, the luminance has been more than halved compared to the first Exlux generation. Furthermore the appliance features a classic design with a sleek, low-profile GRP enclosure. It is incredibly lightweight compared to equivalent products on the market, yet it is exceptionally robust (IK10) and has IP66/67-rated protection. The Atex- and IECEx-certified Exlux 6002/4 series luminaires are perfect for illuminating spaces and equipment both indoors and outdoors, and are able to withstand ambient temperatures between -40 °C and +60 °C. As part of its accessories range, R. Stahl offers a number of different brackets for added flexibility when it comes to installation – ceiling-mounted, pendant and pole-mounted light fittings are all possible thanks to these accessories.

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Safety & Security

Certified pressure relief technology
New Ex d enclosure technology for Zone 1

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The new enclosure solutions with Ex d-certified pressure relief technology offer weight savings of up to 50% and space savings up to 25%. (Picture: R. Stahl)
The new enclosure solutions with Ex d-certified pressure relief technology offer weight savings of up to 50% and space savings up to 25%. (Picture: R. Stahl)

R. Stahl’s new explosion-protected Ex d Ex Pressure enclosure technology is a futureproof alternative to conventional enclosure encapsulation. Complete switchgear assemblies and distribution boards can be housed in a single Ex Pressure enclosure, saving significant amounts of space and weight and making maintenance a whole lot easier. Components can be quickly retrofitted, modified or removed at any time and with little difficulty. The innovative Atex- and IECEx-certified Ex Pressure switch cabinet series features a unique pressure relief system.

Special stainless steel wire mesh ensures that pressure within the enclosure can be reduced effectively, serving as a flameproof barrier that allows for a controlled flow of gas coupled with heat absorption. This reduces the internal pressure in the event of an explosion to a maximum value of less than 1 bar; sparks that might otherwise cause an explosion are safely contained inside the enclosure thanks to the special mesh structure. The Ex d-certified pressure-relief technology allows for wall thicknesses of just 2 mm; compared to conventional Ex d flameproof enclosures, thereby helps to save space requirement and up to 50% weight. Additionally, this makes transportation, handling and installation significantly easier. The Ex Pressure concept also proves to be a viable alternative and has many attributes when compared with Ex p pressurized enclosures – it is more efficient and involves far less design work.

R. Stahl’s stainless steel enclosure with Ex Pressure technology comes in a choice of four enclosure sizes, ranging from 300 x 400 x 200 mm to 1000 x 1400 x 700 mm. These IP66-rated switch cabinets are available with either a single-leaf door or a double door. The large, undivided space inside the enclosure provides easy, unobstructed access for installation, maintenance and inspection work. The volume available within the enclosure for installing equipment is identical to that of many conventional industrial switch cabinets and control boxes and allows the switchgear layout used for non-hazardous areas to be used unchanged for hazardous areas without any additional engineering work.

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Safety & Security

More energy efficient
Expanded range of slim Ex I isolators

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Explosion protection expert R. Stahl is increasingly expanding its range of intrinsically safe ISpac isolators. The latest module of the slim, continuously expanded ISpac isolator range that R. Stahl has now introduced is the 9282 temperature transmitter. The signal converter converts Ex i signals of thermocouples and resistance temperature detectors into 0/4 … 20 mA standard signals. The new devices can be operated in Zone 2 and for functional safety applications according to SIL 2. The ambient temperature ranges from -40°C to 70°C, making its application versatile and suitable for field installations in harsh climatic conditions. Furthermore, the 9282 temperature transmitters have been designed to be more energy efficient leading up to 40% savings in energy consumption while emitting less heat.

Using pac-Bus, ISpac isolators can be snapped onto the DIN rail in a way that is easy and saves space. (Picture: R. Stahl)

Using pac-Bus, ISpac isolators can be snapped onto the DIN rail in a way that is easy and saves space. (Picture: R. Stahl)

The entire isolator range for 1- and 2-channel signal transmission is available in a compact design. The slim switching repeaters, transmitter supply units and binary outputs enable an especially high signal density in an installation space that is approximately 30% smaller, thus making it an exceptionally flexible and reliable solution for safe operation of field devices in hazardous environment. Additionally, the ISpac modules that are globally certified for Zone 1 and 2, including NEC Class 1 and Division 2, fulfil the functional safety criteria according to SIL 2 or SIL 3. Tested operating periods from over 10 to 15 years guarantees availability for the long term as well as a high standard of reliability. All modules can be mounted directly on the DIN rail, snapped onto the pac-Bus and combined across all models to make them future-proof. The pac-Bus obviates the need for individual wiring, supplies up to 40 modules with auxiliary power and when combined together with the 9193 series supply module, it provides a collective fault signaling solution that is useful for overall diagnostic purposes.

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