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.
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.
Certified pressure relief technology
New Ex d enclosure technology for Zone 1
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.
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.
New flexible safety system
Smooth upgrading of process plants
Hima Paul Hildebrandt, provider of smart safety solutions for industrial applications, has brought a new programmable safety system onto the market. The flexible and scalable Hi-Quad X is a further development of the Hi-Quad, which has been securing over ten thousand applications worldwide for around 30 years. It fits seamlessly into Hima’s Smart Safety Platform.
The Hi-Quad X is not just a flexible, efficient safety system; it is also an important component in Hima’s new, technically coherent Smart Safety Platform, which unifies all safety systems of the company. Hardware and software are closely aligned. Plant operators thus receive a scalable solution which they can use to cover the complete safety and security requirements for small single applications right through to complex architectures of large-scale plants in line with requirements.
The Smart Safety Platform is based on the use of basic components which are identical for all Hima product families, including operating system, engineering tool and communication via Safe Ethernet. The fact that platform components can be combined freely means that virtually every customer solution can be developed and implemented. The holistic approach enables companies to use a solution from one source, thereby reducing the complexity of their plants considerably.
New performance dimensions, flexible system architecture and integrated intrinsic safety
With the implementation of the proven platform technology, the Hi-Quad X reaches a new performance dimension. Users thus benefit from a reduced system cycle and reaction time, particularly for floating point calculations. The increased diagnostic capability, which permits quicker defect tracking during maintenance work, provides additional benefits. On the one hand the more flexible system architecture enables the timely use of redundant modules right through to complete redundancy. On the other hand retrospective adaptations to the system for application programs, hardware and communication can be undertaken – even during operation.
The Hi-Quad X system also enables the use of SIL3 modules with integrated intrinsic safety (Ex protection). Users no longer need a separate isolation amplifier for their intrinsically safe SIL circuits. The benefits of the diagnostics provided can therefore be utilized up to the field device without any losses. Other benefits include the simplification of planning, documentation and furnishing proof of the intrinsic safety. The fact that flawed plant outages due to defective isolation amplifiers are no longer an issue is another huge bonus. This is made possible by the redundant connection options which always permit the exchange of defective system components during operation.
The Hi-Quad X system can of course be connected with every basic process control system (BPCS), even on a redundant pathway. It then continues to run independently even if an error occurs in the BPCS or in the communication. The security mechanisms which are installed assist with this process. They create a virtual and also a physical separation when standard protocols are used.
Hima customers who already use Hi-Quad systems benefit from the upgrade to Hi-Quad X with short plant outages and considerably reduced costs when compared to new installations. The I/O modules including field wiring can continue to be used. This enables users to make savings in terms of investment and costs for testing and documentation.