The PSE EX piezo switch from SCHURTER has achieved approval according to ATEX class II 2 G Ex ib IIB T4. This approval enables the switch to be employed in explosive facilities above ground.

The protection class refers to the permissible application in areas where an explosive atmosphere can arise from a mix of air and gases, vapors or mists. The switch may be typically used in oil/gas production systems, in petrochemistry, as well as in paint and varnish mixing facilities. Preparations for extending the approval to include dust-Ex applications are underway. The standard design is available for a mounting diameter of 16mm with pin connections and various housing colors. Additional mounting diameters and connection designs are available
upon request.

The switches for Ex applications are labeled with the type of approval and an identification number. In accordance with the ATEX guidelines, an installation manual is included in the scope of delivery.

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Bulgin announces new version of MPI range of illuminated vandal resistant switches.

All MPI switches have bodies and buttons machined from high-grade stainless steel. A tough Polycarbonate lens in the stainless steel actuator gives a robust and aesthetically-pleasing switch.

All switches are front-panel sealed to IP66. However, Bulgin’s new range is also rear-of-panel sealed. This makes them suitable for use outdoors or in other situations where condensation or leakage behind control panels can be problematic. Rear panel sealing is available in a variety of styles, including single and dual colour with dot or ring LED illumination. Independent switch and LED terminals allows customers the flexibility to choose between permanent or controlled illumination. Contacts are single-pole push-to-make.

“The MPI series of switches boast IP66 sealed properties combined with a rugged design and a variety of style options,” comments John Wilson, MD of Elektron Technology. “With this latest addition to the Bulgin range Elektron Technology further enhances its complete design-and-manufacture service, offering our customers across a number of industries a flexible, quality solution to meet their control panel design needs.”

The switches have either solder tags or screw terminals, which facilitates easy field servicing, and also feature potted moulding and flying leads to the rear of the switch. With integral supply resistors the LEDs can now be driven directly from 6, 12 and 24V supplies.

The MPI series is tested to 750,000 mechanical and 35,000 electrical operations and rated at 50mA, 24V dc. The series has also recently undergone design improvements at construction stage, incorporating surface mount LEDs and TVS’s.

All switches in the MPI series have momentary action contacts making them ideal for access control and door entry applications including lifts, panic buttons, car park barriers, emergency telephones, vending machines and food processing.

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Wireless Technology Eliminates the Need for Communications Cabling or Power Line Installation, Saving Time and Money

Honeywell’s XYR6000 Wireless Position Sensor is based on one of the company’s most-proven sensor technologies. The XYR6000 position sensor helps improve overall reliability by giving users the ability to remotely monitor a number of applications ranging from valve position to safety shower emergency use.

Originally introduced by Honeywell Process Solutions (HPS) in June 2009, the XYR6000’s broad spectrum of potential is now being offered by Honeywell Sensing and Control to targeted OEM customers.

Based on the MICRO SWITCH™ CX hazardous area switch, the XYR6000 Wireless Position Sensor monitors position when used in conjunction with OneWireless™ systems, sending the signal from remote or potentially hazardous areas. Featuring full UL, ATEX, and IEC Ex approvals, the XYR6000 Series has calibration within 270 degrees rotation to apply in most linear and/or rotary position sensing applications. Its analog output provides true position span output in both percentages and degrees.

In addition to eliminating manual monitoring, the sensor’s accuracy improves safety by identifying linear or rotary valve positions, minimizing the risk of unwanted fluid release or unplanned product contamination. When used for safety shower notification, the sensor can serve as an emergency response trigger. The XYR6000 Wireless Position Sensor also simplifies maintenance by electronically tagging each valve in the system by identifying valves that have degraded or been damaged. This reduces the need for field technicians to manually inspect valves for maintenance.

Since the sensor carries all the appropriate hazardous location certifications, it is often ideal for applications such as monitoring valve position status, manual process valve position, safety shower and eye bath notification, tank overflow alarms, damper and louver position, gate/door position, and other applications where installing wires is inefficient, cost prohibitive, or simply unsafe.

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