Motor purge system.

Pepperl+Fuchs has introduced the Bebco EPS® purge and pressurisation system designed specifically for use with large motors or large enclosures in Zone 1 hazardous areas. The 6100 series purge and pressurisation system can purge an enclosure over 450 cubic feet (12.2 cubic meters), making it the largest purging system available from Pepperl+Fuchs. The 6100 series system is perfect for applications in the chemical/petrochemical and oil and gas industries.

The 6100 series is a fully automatic system that does not require an operator to initiate purging or pressurization. It offers optional temperature sensors that can be mounted around the motor for alarm notification or cooling. Additionally, there is automatic pressure compensation for excess leakage from the motor.

The 6100 system consists of a control unit, vent, low pressure sensor, and optional temperature sensors. The control unit allows users to configure the system for size of motor, temperature switch points, pressure switch points for leakage compensation and shutoff pressure, extra output for control or alarm, two selectable intrinsically safe inputs for various actions, and up to three temperature sensor inputs that can monitor various points within the motor housing. The intrinsically safe user-interface can also be mounted in a separate enclosure near an operator for quick access and easy system monitoring.

6100 series motor purge and pressurization system features:
• Certified for ATEX and IECEx Zone 1
• Fully automatic
• Maximum flow rate of 14,000 l/min
• Intrinsically safe user-interface for system programming and monitoring
• Control unit monitors system operation and controls enclosure power
• Auxiliary contact outputs for alarm or control
• Multiple temperature inputs for monitoring and control
• Automatic pressure compensation for excess leakage from motor

The intrinsically safe pressure sensor provides an accurate enclosure pressure reading for safe operation within the hazardous area. The pressure sensor—which can measure internal pressure from 0 to 25 mbar—can be remotely located at the motor’s low pressure section for correct, safe motor pressure readings.

The EPV-6100 vent can be ordered to detect various flows for purging and then feedback the signal to the 6100 series control unit to start the purge timer. There are five flow rates to choose from (14,000 l/min maximum) to meet any application requirement in large motors or enclosures.

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The next-generation purge and pressurisation system.

Pepperl+Fuchs has introduced an advanced Bebco EPS® purge and pressurization system, designed for Class I or II/Div. 2 and Zone 2/22 locations. This innovative and compact manual or automatic system delivers all the features needed for reliable hazardous location protection within a small, streamlined solution.

“The new, compact 7500 series is easy to use, offering absolute reliability and efficiency. When fully automated it provides excellent enclosure protection for electrical equipment like motors, drives, control panels and cabinets, and gas analyzers,” said Kristen Barbour, Marketing Manager. “Whether you need gas or dust protection in the oil and gas, chemical, maritime, or offshore industry – the Bebco EPS 7500 can be used in process industries around the world for applications that previously required heavier and more expensive explosion-proof protection.”

The 7500 series Ex pzc/Type Z purge and pressurization system can be fully automatic or manual and purges a common enclosure of hazardous gas or dust to maintain positive pressure. It effectively reduces the classification within the protected enclosure to a non-hazardous area. The 7500 carries ATEX and IECEx certifications and is UL listed. It operates within an extremely small footprint of only 5.8” x 3.8” x 1.9”.

The 7500 Series includes intelligent automatic monitoring and control of enclosure pressure with dilution and continuous flow functionality. The system makes automatic adjustments and provides an alarm output for reliable protection. It is designed in marine-grade chromate aluminum – making it rugged enough to withstand the harsh conditions of many process industries. The 7500 uses universal AC/DC power and is available as both a panel mount and external mount. The large touch screen enables quick and easy setup while also providing status LEDs, a bar graph for pressure, and multiple program selections.

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Air purging

AAI (Applied Analytics Inc) has unveiled the ePurge X, a next-generation solution for air-purging electronic enclosures. Unlike conventional purge controllers, this new offering is entirely solid state and much more in line with the design of AAI's highly automated process analyzers. The ePurge X is slated to be available both to distributors and the general public in March 2011.

"When you glance through the brochure, you'll immediately notice the form factor," says Andy Burgess, senior mechanical engineer, AAI. "The ePurge X has an ultra-slim profile that barely protrudes from the surface of the enclosure. It also has half as many components to install as the purges that are currently available."

AAI is also introducing an entirely new concept with the utility-saving feedback feature. The ePurge X uses a digital mass flow sensor to monitor the flow rate of purge gas through the enclosure. Along with the differential pressure, this flow value allows the ePurge X to provide data on instrument air consumption by specifying the exact demand that will keep the enclosure safely pressurized without wasting any extra utilities. "In an industry of safety devices that have no inherent return on investment, we are offering a product that can pay for itself within five years in utility savings alone," says Yoav Barshad, President, AAI. "Writ large across all the air-purged enclosures in a typical industrial site, this is nothing less than a killer feature."

Solid state purge controller

Applied Analytics (AAI) has unveiled the ePurge X, a next-generation solution for air-purging electronic enclosures. Unlike conventional purge controllers, this new offering is entirely solid state and much more in line with the design of AAI’s highly automated process analyzers. The ePurge X is slated to be available both to distributors and the general public in March.

“When you glance through the brochure, you’ll immediately notice the form factor,” says Andy Burgess, senior mechanical engineer, AAI. “The ePurge X has an ultra-slim profile that barely protrudes from the surface of the enclosure. It also has half as many components to install as the purges that are currently available.”

AAI is also introducing an entirely new concept with the utility-saving feedback feature. The ePurge X uses a digital mass flow sensor to monitor the flow rate of purge gas through the enclosure. Along with the differential pressure, this flow value allows the ePurge X to provide data on instrument air consumption by specifying the exact demand that will keep the enclosure safely pressurized without wasting any extra utilities. “In an industry of safety devices that have no inherent return on investment, we are offering a product that can pay for itself within five years in utility savings alone,” says Yoav Barshad, President, AAI. “Writ large across all the air-purged enclosures in a typical industrial site, this is nothing less than a killer feature.”

The ePurge product family will be used with all future purged systems from AAI. Adds Burgess: “We were compelled to develop the ePurge X when we could not find a purge solution for our own analyzer enclosures that didn’t compromise the original system’s form factor or complicate installation. There must be many manufacturers that, like AAI, carry high expectations for safety components. We are our own customer, and we witness the ePurge X exceed those expectations each day of production.”