01 April 2013

LEISTER Technologies has responded to the market’s need for accurate quality control of geomembrane welding by upgrading a range of tools to feature data logging technology. The Swiss company has now adapted three of its civil engineering automatic welders to utilise the technology, and launched these units as the Twinny T USB, Comet USB and Astro USB. It has also introduced a USB adaptation of its testing instrument with the Examo USB.

Commenting on the reason behind this move, Fabian Beermann, division manager at BMC Gulf, Leister’s sales and service partner in the UAE, says: “Geomembranes are used in various critical applications. This could be in groundwater protection for a landfill or waterproofing of a tunnel structure. The success of such construction projects depends highly on the optimal performance of the membrane and its welding joints. Therefore, installation contractors are often obliged by the authorities and engineering consultants to precisely log the data of the welding job.”

“As a result of introducing this machine technology to the GCC market, all parties are provided with an even greater security within the project,” Beermann adds.

Leister has grown into an international market leader with its tools for welding geomembranes. This growth can be attributed to the high quality and reliability of its hot air tools, automatic welding machines, handheld extrusion welders and measuring instruments.

With the welding of geomembranes, the quality of the weld seam depends on the temperature, speed and joining force, with the desired result attained through the optimal combination of these three parameters.

The USB option allows data to be logged automatically onto the inserted USB flash drive of the equipped models: Twinny T USB, Comet USB and Astro USB. “The parameters are thus recorded with the completed section, making it possible to track the welding parameters, for every meter, with all three welding machines, Beermann says.

Similarly, tensile and peel tests are conducted using the Examo USB testing instrument in just the same way as the conventional version. Test results are not only visible on the display but, as with the welding machines, are loaded directly onto the USB drive.

Data can be transferred by simply removing the USB drive after logging the data and inserting it into a standard PC or notebook. The transferred values can then be read with current software (MS Excel). In this manner, more than 2,000 km of welding seam lengths are recorded with only 1 MB memory. The logs can also be checked for falsification security. Using Leister macros, it is also possible to convert the data into easy-to-understand graphics, which can then easily be read and interpreted.

“Nothing has changed for the user when it comes to working on the three USB devices; the operation is performed in the same way as conventional versions of each device,” says Beermann.

The USB drive is located in a safe place on the Twinny T USB, Comet USB and Astro USB, allowing for problem-free work, even in adverse weather conditions. Complete tracking of both the welding process and welding result is possible with the four equipped devices, translating to even greater security and quality for both the contractor and customer, Beermann adds.

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