cpp – Process technology for the chemical industry 02.2020

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cpp INSTRUMENTATION, CONTROL, AUTOMATION Thilo Reich, Head of Engineering at Georg Oest Mineralölwerk, on the roof of the storage tanks. Vega sensors monitor the mixing of oils and keep track of stock levels. tanks for many years. Although the mixing processes are simple and the storage tanks are not particularly complex from the point of view of level measurement and contain no disturbing internals, the sensors nevertheless have to be robust. Among other things, they must be able to withstand temperatures of up to 100 °C and in some areas also meet the requirements for use in potentially explosive atmospheres. WHG approval is also very important – with Vega sensors, for example, operators can carry out a function test with just the push of a button. However, the most important requirement is: “We need sensors that provide us with reliable measured values over a long period of time and this is exactly what Vega sensors do,” says Reich, referring to Vega sensors installed almost 30 years ago that are still operating flawlessly. So for him, it’s only logical that Vega sensors have been installed in almost every one of the approximately 70 tanks. For one thing, they measure the level in the numerous storage containers, ensuring reliable inventory monitoring and delivery to customers. And for another, they protect against tank overfill. About a year ago, new overfill protection equipment in the form of Vegaswing was installed in the raw material storage facility. Oest has been very satisfied with Vega‘s support and service for many years now. Thanks to Plug & Play, setting up and commissioning Vegaswing is unbelievably easy. Maintaining a good overview Inventory monitoring has assumed an important role because the requirements in terms of delivery times have changed so much. “On the one hand, we are faced with the challenge of having to react much faster than before and also deliver widely varying quantities. And on the other, we have to keep certain products constantly in stock for some Asian customers. What is more, we have to keep an eye on the prices in the raw material markets so that we can always buy our basic raw materials at favourable prices,” says Reich, explaining the complexities of the task. Inventory data acquisition, visualisation and delivery planning have therefore increasingly become an important part of the business. These are based on automated inventory monitoring. For this, Oest had relied on Vegalog for many years, but it had become outdated and was discontinued. Today, the company is supported by Vegamet and Vega Inventory System (VIS), which allow it to visualise inventory for pre-planning and control production processes. The sensors and controllers from Vega collect all measurement data, which Vega Inventory System then makes available in a form that enables good, effective planning. Vega Inventory System reports the need for replenishment fully automatically and in good time. To this end the software draws not only on current measurement data from the inventory, but also on empirical data gathered from consumption history. Analysis and planning tools enable optimised material requirement, inventory and delivery planning. Bar charts and tank symbols provide the user with a constant overview of current stock levels. Conclusion Thanks to Vega Inventory System, Georg Oest Mineralölwerk has quick access to current as well as historical consumption data. The level values are used as a reference. “Calibrated meters are used when filling the tank lorries, but the data from the Vega sensors are very important for comparison. Even the old sensors still deliver very accurate values.” Managers can view the stock levels at any time and intervene if necessary. This not only optimises operational processes, it also enables cost-effective production and inventory planning. In short: “The service and support we get, as well as the price-performance ratio and quality of Vega sensors, are simply excellent,” says Reich in conclusion. www.cpp-net.com Online search: Vega AUTHOR: CLAUDIA HOMBURG Marketing, Vega 22 cpp 02-2020
cpp PRODUCTS Ultra-compact weighing electronics Vibronic point level detector Picture: Siemens Siwarex WP351 is Siemens’ new solution for intelligent weighing automation. Measuring 20 mm width by 65 mm height, the module is one of the smallest weighing electronics units available. The device’s 1,000 Hz sampling rate and processing time combined with a digital output response time of less than one millisecond guarantee highest accuracy and repeatability. This capability represents especially in case of checking scales and high performance filling machines a big advantage, as even within very short weighing times the dosing devices are controlled in an optimal way. As an integral part of Simatic ET 200SP, Siwarex WP351 can be seamlessly integrated into Simatic and non-Simatic automation systems, making it a clever alternative to traditional weighing terminals. The intelligent firmware gives users the ability to control weighing processes directly from the module, thereby reducing the load on the connected PLC. Compatible with almost all analogue strain gauge load cells, Siwarex WP351 is a versatile solution for demanding weighing applications such as mixing, filling, bagging, checking, or totalising. www.cpp-net.com Online search: Siemens The Liquiphant FTL51 is used in storage tanks and pipelines for level measurement of any liquids. The device has already been developed according to IEC 61508 and the “safety by design” principle and is therefore designed for use in SIL2 and SIL3 applications. Operators can now communicate with the Liquiphant FTL51 and the Smartblue app from Endress+Hauser. The app provides access to all product and diagnostic data. Especially in hard-to-reach areas, where scaffolding has to be provided for maintenance, this speeds up the inspection of systems considerably. The new Liquiphant displays the status of the level switch via LED or via the diagnostic function of Heartbeat Technology in the Smartblue app. In addition, verification via Heartbeat technology enables complete documentation. The newly implemented SIL wizard also guides the user through the recurring test in an uncomplicated manner. www.cpp-net.com Online search: Endress+Hauser Picture: Endress+Hauser HOW EFFICIENT IS YOUR AERATION REALLY? LET’S TALK Markus Leidinger, Application Specialist, Wastewater Technology +49 175 9335602 markus.leidinger@aerzen.com Real efficiency means operating the load profiles in wastewater treatment plants with precision. Aeration consumes up to 80% of the total energy requirements. The greatest savings potential can therefore be found here. With our Performance³ product portfolio, consisting of Blower, Hybrid, and Turbo, we always find the most efficient and tailor-made solution for you. Benefit from up to 30% energy savings! LET’S TALK! We’ll be happy to advise you! www.aerzen.com cpp 02-2020 23
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