SHOWCASE
Phoenix Contacts A
Adjustment for Hydra-Cell Metering Pumps
Mechanical Speed
anner International has introduced a range of mechanical speed variators for manually adjusting the rotational speeds and output flows of its Hydra-Cell metering pumps. These pumps are used in oil and gas production for injecting chemicals such as acids and bases, amine gas sweeteners,
W oxygen scavengers, polymers and
proprietary chemicals into process streams. Because Hydra-Cell pumps are true positive displacement pumps, flow rate is directly proportionate to input shaft rpm and virtually independent of system discharge pressures. Very precise and repeatable, infinite adjustment of shaft speed is achieved from almost zero rpm, through a simple manual adjust hand wheel. It transmits its highest torque from speed zero, is adjustable in operation and at rest and exhibits linear setting
characteristics.The Wanner mechanical speed variator is ideal for use in explosive environments and is ATEX certified for zones 1 and 21, completely removing the need for complex and costly external ATEX control.
Wanner International Tel: 01252 816847 Web:
www.hydra-cell.eu
enter 808 New features include:
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Web:
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Spirol Disc Springs S
provide pipe support solution for industrial pipe systems
pirol Disc Springs can provide a robust, maintenance free support system for industrial pipe systems. As mandated by the ASME code for pressure piping, proper design and installation is critical for the performance and safety of piping systems. Industrial pipe systems are primarily supported by rod hangers, base line or base elbow supports. While these static supports are used to carry weight, dynamic supports are necessary to control loads on the pipe system and for these applications Spirol Disc Springs provide a solution. For example, in heat exchanger applications, Spirol Disc Springs can be used to accept thermal dynamics. As the temperature of the fluid within the pipe changes, the pipe will expand when hot and contract when
cold. Spirol Disc Springs support the system by maintaining a constant pressure at any temperature. This consistency is transmitted to the pipe joint and is essential for maintaining a proper seal. A well sealed gasket prevents fluids from escaping and reduces costly maintenance. Spirol Disc Springs offer an advantage over Coil Springs by providing an equivalent displacement in a fraction of the space. In many instances, such as under a heat exchanger's bottom flange, this space saving is needed.
Spirol Industries Ltd Tel: 01536 444800 Web:
www.spirol.com
SICK launches Flexi Loop for major safety connection advances
he launch of the innovative SICK Flexi Loop marks a major step forward for machine safety with a simple connectivity solution for safety and plant design engineers to meet recent regulatory changes. The SICK Flexi Loop offers new dimensions of scalability, diagnostic insight and I/O connection capacity within a compact space and at a very competitive cost.
T It is ideal when upgrading
automation, robotics and modern manufacturing processes.
“This is what the industry’s been waiting for,” comments Dr Martin Kidman, Safety Specialist for Sick
UK. “It has been fairly common practise to connect interlocks and other safety contacts in series but today’s engineers are faced with increasing demands to meet PLe levels of safety using the convenience of series connection. However, changes to key safety standards means that traditional hard wired series connection of switches using volt free electro-mechanical contacts is no longer advisable in higher risk applications. Having to accommodate all the equipment, cabling and connections required to comply can add to the cost and cause space problems. “The new SICK Flexi Loop permits the series connection of dual channel devices, whilst allowing high diagnostic coverage and eliminating the potential for so called fault masking. It is a fully open system and can accommodate standard sensor/switch devices from any vendor. As a field I/O system, it allows a designer to connect any safety system in series with another without any compromise of the safety system performance to PLe integrity.”
With a capacity to cascade up to 32 safety sensors / switches on one loop and to create up to eight
separate loops, the IP67-rated SICK Flexi Loop will provide up to 256 sensors on eight dual channel inputs, reducing the clutter of traditional connections. The Flexi Loop is simple to install as a fully cascadable system, using standard cable with M12/5-pin connectors. No special connections or shielded cables are required. The SICK Flexi Loop provides intelligent built-in diagnostics without the need for a field bus or complex network addressing, resulting in a decentralised cost-effective solution to monitoring the status of each safety sensor / switch connected to it. As well as indicating which device has switched, and why, LED indicators on each node give live status information, and avoid referring back to a desk- based control point. This diagnostic capability is an advance on SICK’s widely used Flexi Soft controller platform which allows status monitoring at the controller or via the HMI/PLC interface.
SICK Tel: 01727 831121 Web:
www.sick.com/flexisoft Automation NOVEMBER/DECEMBER 2013 enter 811 I
Castell launches new spring-loaded interlock
ndustrial safety specialistCastellhas launched a new spring-loaded lock, the KSP, to increase efficiency in
traditional bolt interlock applications. The KSP is a spring-loaded version of the Castell K lock, and uses an internal spring to automatically extend the locks bolt to its fullest extent when circumstances permit. The key-operated mechanical interlock is suitable for the safe locking of simple actuating mechanisms. The KSP is generally used at the start of a process and traps a key while equipment is running. When the equipment is switched to a safe state and the aperture in the actuating mechanism is aligned, the spring-loaded bolt automatically extends and is locked in position. This represents an advantage over existing bolt locks as the operation happens immediately and without the need for human intervention. Once the equipment is in the safe state, the key is released and can be used to gain access or start a separate process. The key must be inserted and turned, retracting the bolt, to allow the actuating lever to be moved again.
Castell Safety International Ltd Tel: 020 8200 1200 Web:
www.castell.com/en
enter 812 35 enter 810 enter 809
s part of Phoenix Contacts continuous improvements in customer experience, an entirely new web platform has been developed and was launched in mid November. With improved search options, better functionality and a fully integrated Eshop, customers can access information quicker and easier.
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