March 2005Operator Interfaces, Switches & Relays
Integrated Solutions
For demanding applications in high-temperature areas, inductive proximity switches with good long-term reliability have become increasingly popular. Contrinex offers a series of embeddable and non-embeddable HT switches in sizes M8 to M50. The devices have operating distances from 2 to 25 mm, and are respectively suitable for applications up to 140, 150, 180 and 230°C.
The solutions for 140, 150 and 180°C feature built-in amplifiers. Connection by means of a 2 m silicone or Teflon cable is standard. Other cable lengths and types are available on request.
For 230°C types, the amplifiers are built into an M12 stainless-steel housing, which is connected by means of a standard 3 m Teflon cable, and thus removed from the hot area. This cable carries a DC signal rather than a high-frequency signal, and its length can thus be chosen freely, without having a negative influence on the switching behaviour of the device, and without the need for adjustment. Connection of the amplifier is by means of a 2 m PUR cable.
All the usual protection functions, such as short-circuit, overload and voltage-reversal protection are built in. The devices feature good protection against environmental influences (IP67).
Supply chain attacks have become an industry of their own
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Organisations face a fundamental change in supply chain risk. Opportunistic attacks are becoming increasingly systematic, with threat actors deliberately targeting trusted technologies and relationships that can give them access to multiple organisations at once.
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Bringing patrol, incident, and H&S reporting onto a single platform: a security operation should be able to show what happened, when it happened, and how personnel responded.
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Physical barriers matter, but a site is not secure just because the gate is strong or the container is locked. True security requires verifying every movement, tracing handovers, making exceptions visible, and allowing intervention before minor issues become major losses.
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How can access be controlled more efficiently without disrupting the estate or creating endless queues in the visitor lane(s), while also adhering to the draft Code of Conduct?
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Physical security in schools and learning institutions is a hot topic in South Africa, with the Gauteng Department of Education recently announcing plans to use AI-powered cameras and biometric access to strengthen school safety.
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A layered approach to security tightens protection and minimises downtime and operational risk. Moreover, integrating all the parts of a solution and proving they can do the job before spending money are critical.
Read more...Monitoring relays keep operations running Omron Electronics
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OMRON’s K8 series relays are designed to prevent breakdowns, protect critical assets and support smarter maintenance strategies on the plant.
Read more...Impro announces Primo update
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Impro Technologies recently held a launch event in which it introduced a series of new products, from new readers through to its updated Primo access management software.
Read more...The security debt hidden in residential estates
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Many residential estates undermine their own security not through a lack of technology, but through hidden weaknesses in gate design, fragmented systems, recurring software dependence, weak operational ownership, and insufficient estate management input.
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Editor's Choice News & Events Integrated Solutions Infrastructure Residential Estate (Industry) SMART Security Solutions started the year with our annual SMART Estate Security Conference in Cape Town on 26 February 2026. Held at Anna Beulah Farm, the conference saw a number of delegates enjoying the farm’s excellent cuisine, while listening to outstanding presenters.
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