Operator Interfaces, Switches & Relays


Large digit loop powered indicators

September 2012 Operator Interfaces, Switches & Relays

Since the installation of the first Beka intrinsically safe loop powered indicator in 1984, the company has been at the forefront of indicator development culminating in the recent launch of its fourth generation models. These new instruments based the latest electronic, production and certification technology provide larger digits, improved visibility, more standard features and higher reliability.

The range includes field and panel mounting models with a choice of four digits 34 mm high, or five digits 29 mm high with a 31 segment bargraph. All have an extended operating temperature of -40 to 70°C and include a square root extractor, 16 segment lineariser, internal calibrator and a tare function. Optional accessories include a backlight that may be looped or separately powered and dual alarms with isolated solid state outputs.

The field mounting models have a robust IP66 enclosure with an armoured glass window making them suitable for installation in harsh industrial and offshore environments. A separate terminal compartment with forward facing terminals simplifies installation and maintenance. Accessories include pipe-mounting kits and stainless steel tag plates etched with customer specified information.

Panel mounting models are available with 4 and 5 digit displays having heights between 11 and 34 mm. All panel mounting indicators have an IP66 front panel and a gasket to seal the joint between the instrument and the mounting panel allowing them to be washed down. A novel scale card showing the units of measurement in a window adjacent to the display may be changed on-site without opening the instrument enclosure or removing it from the panel.

Field and panel mounting models are available with ATEX and IECEx intrinsic safety certification permitting installation in gas and dust hazardous areas. For applications in Zone 2 or 22, field mounting models with Ex nA and Ex tc approval permit installation without the need for Zener barriers or galvanic isolators significantly reducing installation cost.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

High-efficiency switching solutions
Operator Interfaces, Switches & Relays
Becker Mining South Africa has launched a new-generation energy distribution system that has been specially developed to enhance productivity and safety in the challenging conditions of local underground coal mines.

Read more...
World-first solution for platinum miner
ABB South Africa Operator Interfaces, Switches & Relays
When a consulting engineering company approached ABB about a specific problem that its platinum mining client was experiencing at its smelter facility in the North West Province, it was an opportunity for the technology provider to showcase its innovation and adaptability in responding to specific customer requirements.

Read more...
Robust industrial relays
Vepac Electronics Operator Interfaces, Switches & Relays
Industrial RT relays from Vepac are particularly robust and are used for high load control. RT modules can control up to three changeover contacts, with 10 A each. In addition, this product is equipped for safety reasons with manual operation, improved LEDs or free-wheeling diodes.

Read more...
Pick-to-light device with added flexibility
Turck Banner Southern Africa Operator Interfaces, Switches & Relays
Pick-to-light devices and systems help industrial automation manufacturers reduce the risk of error in the assembly process, ensuring product quality and reducing cost. These devices are also used in kitting and put-to-light operations to ensure high accuracy in fulfilment operations.

Read more...
Mobile devices in hazardous areas
Extech Safety Systems IS & Ex
The intention of this paper is to outline the basic requirements for designing and manufacturing an IS mobile device. What are the risks and what do the standards say? This will explain why IS mobile devices are more expensive than standard rugged devices.

Read more...
Cleanroom tablet for GMP manufacturing
Extech Safety Systems IT in Manufacturing
Extech’s GMP Cleanroom Tablet, on view at Stand J509, is designed for mobile applications in pharma and biotech industries adhering to GMP practices. It features a stainless steel housing and comfortable ...

Read more...
World’s first 5G smartphone for hazardous areas
Extech Safety Systems IS & Ex
i.safe MOBILE has launched the world’s first 5G smartphone for ATEX and IECEx zone 1/21.

Read more...
Protection relays – control what you can
Schneider Electric South Africa Operator Interfaces, Switches & Relays
With municipalities’ distribution centres and equipment taking immense strain due to load shedding, maintenance has unfortunately moved down the priority list. The time is now to implement what municipalities can control - protecting and monitoring installed equipment.

Read more...
Programmable multicolour indicator beacons
Turck Banner Southern Africa Operator Interfaces, Switches & Relays
Pro Editor software lets users program the K100 Pro Daylight Visible and K100 Pro Indicator with a variety of alarms, colours and animations.

Read more...
Low-profile touchless switches
Fox Controls Rand Operator Interfaces, Switches & Relays
LED illumination and indoor/outdoor durability make these low-profile touchless switches ideal for clean and functional industrial and public applications.

Read more...