beams by joining three plates. Often the material will be rusty mill scale plate that has to be welded directly without any preparation. Cost pressures mean the welds must be made as quickly as possible and the need for rapid, trouble-free on-site assembly dictates that distortion and deformation are not acceptable. ESAB was recently approached by a customer with

exactly the requirement outlined above. In this case, a 10 x 470mm web needed flanges to be attached along both edges; the flanges were 15 x 200mm and one needed to be attached at an angle rather than being perpendicular to the web. Clearly some form of semi-automated welding would

improve the situation and it might be thought that the obvious answer would be to use the best technologies available, such as pulse welding that reduces heat input and, therefore minimises distortion. However, ESAB says this is still a relatively time-consuming process that would require two welding operatives.

ESAB  01992 768515 

In praise of the humble thermocouple

associated temperature instrumentation on stand E195 at Southern Manufacturing & Electronics 2019. Ahead of the event, the company explores enduring popularity of the uncomplicated thermocouple in today’s high-tech world. Where does the humble thermocouple stand in the


high-tech world of measurement and control? The funny thing is that the temperature instrumentation market is dominated by complex, sophisticated measurement and control systems which provide a high degree of versatility and accuracy but, in many applications rely on a simple thermocouple as the temperature sensor (base-metal type usually). This is surprising really since instrumentation is typically accurate to a fraction of a degree centigrade whereas a base-metal thermocouple has uncertainties of ±2ºC before it even sees the process. Since measurement accuracy of the entire

ROLEC’s new ProfiPANEL

HMI/Machine Controller Enclosures Now In Four Standard Sizes


P 65 rated profiPANEL Standard’s minimalist multi-variable design is ideal for a wide range of modern machine

control applications. It can be mounted from the top or bottom on ROLEC’s profiPLUS 50 suspension arm system. The new standard version offers greater savings by

offering four standard sizes based on a 90 mm profile. Lead times are reduced as all components are held in stock with the standard format ideal for smaller volume orders. It has an individually configurable front plate which can

accommodate a panel PC up to 21 inches. The 3 mm aluminium front plate is permanently connected to the enclosure with flush and virtually edgeless mounting. Each case features a lock and exterior hinge as standard. Each is manufactured from extruded aluminium (silver

anodised) and the slide-in contours for M4/M5 nuts allow easy mounting of equipment.

ROLEC  01489 583858  -enclosures/profiPANEL-Standard.htm

Product Inspection Guide - Building a Complete Program


ully understanding product inspection can be a challenge, from deciding which equipment to install

and where, to how to optimise production line efficiency whilst ensuring regulatory compliance. Designed to include a technical overview and helpful

insights, METTLER TOLEDO’s product inspection guides can help manufacturers to develop comprehensive vision inspection, checkweighing, metal detection and x-ray inspection programmes. Each guide explains the basic principles of the

technology and provides support in selecting the best systems to inspect products for a full range of quality checks, helping to reduce costly product recalls. Whether you’re detecting or removing contaminants,

checking package weight and completeness, or maintaining label and package integrity, product inspection solutions help boost both product safety and brand protection.

METTLER TOLEDO  0116 234 5069 

abfacility will be showcasing its wide range of temperature Sensors, thermocouple connectors and

process is only as good as that of the sensor, why rely on something that, in principle, at least, has not significantly changed in nearly 200 years (Thomas Seebeck discovered the principle of the thermocouple in 1821). Why indeed especially when you are presented with a feeble output (typically 40µV/ºC), a non-linear transfer characteristic and the need for automatic “cold-junction” compensation or some external ice reference; also, one of several types must be selected for each application, complete with a dedicated type of extension cable. The answer to these questions is a surprisingly simple

one – nobody has yet been able to come up with anything better to cope with harsh environments and wide temperature ranges.

Labfacility  01243 871280 

IECEx-certified processing units

for intrinsically safe EGE sensors E

GE now offers IECEx-certified signal processing units for the growing range IECEx-approved two-wire

sensors. The certification greatly facilitates exporting the intrinsically safe sensors to many countries around the world – machine manufacturers and plant engineers can now use them in applications where they were previously barred or had to be specially certified in a tedious process. The type IKMb 122 Ex

signal processing units connect to intrinsically safe EGE two-wire sensors for hazardous gas and dust atmospheres. They feature a space-saving, 22 mm wide DIN rail housing and are installed outside the hazardous area. Green, yellow, and red LEDs on the front side indicate the operating status and signal alarms, if the integrated cable breakage detection or the short-circuit monitoring is triggered. The output can be set as normally closed or normally open.

EGE  

Automation | November 2019 43

Cutting welding time and cost A

common requirement in the construction sector is the production of H-section or I-section structural

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