United under a single roof

Yokogawa Deutschland GmbH, which succeeded Yokogawa Electrofact GmbH in 1989, has a workforce of approximately 230 and an annual turnover of 55 million euros, making it one of the company’s largest European business divisions. Thanks to its steady growth, turnover and profits have remained significantly above the sector average for years. Today, the company offers a comprehensive product and service portfolio referred to as “Vigilance”. Tailored to the needs and demands of industry, it stands for quality, innovation and operational excellence. Yokogawa has always pursued a strategy of global operations backed up by strong local presence – all branch offices outside of Japan are run by local managers. More than 19,000 employees in 28 countries guarantee that every user is able to reach a qualified local partner at all times, and the specialists at Yokogawa Centers of Excellence are available 24 hours a day, 365 days a year, to answer questions, give support and suggest the best possible solutions. As one of the international leaders in automation solutions for the process industry, test and measurement instruments, information systems and industry services Yokogawa generates approximately 3.4 billion US$ in worldwide turnover.

Yokogawa Deutschland currently operates branch offices and production facilities in Ra-tingen, Herrsching (near Munich), Mainz and Wehr (in the state of Baden). The group includes such well-known companies as Rota-Yokogawa, a supplier of flow measurement technology products, and Yokogawa Measurement Technologies (formerly nbn Elektronik), specialised in test and measurement instruments. Innovation is the overriding concept behind Yokogawa. Recent examples are the DPharp EJX multi-sensing pressure transmitter and the new Release 3.05 of the Centum CS 3000 distributed process control system.

Yokogawa’s new EJX series of pressure transmitters is based on an improved version of its DPharp silicon resonant sensor technology – the quasi-digital sensors successfully introduced in the predecessor series – as well as ten years field experience. More than 1.3 million pressure transmitters using this technology are currently installed worldwide. An industry first, EJX series multi-sensing transmitters are able to measure differential and static pressure simultaneously. The device, one of the smallest and lightest of its kind, boasts ultra-fast response times and comes complete with SIL 2 approval.

DPharp sensors are so precise that the standard-version EJX measures at a tolerance of 0.04 % and the reference version at only 0.025 %. Their internal diagnosis function automatically detects clogged impulse lines. At just 95 milliseconds, the response time is exceptional.

The Total Accuracy concept, introduced with the EJX series, ensures that lab-tested performance standards are maintained on the plant floor despite widely varying external influences. That’s why Yokogawa’s pledge of “Five years without calibration”, familiar from the EJA series, has been extended to ten years for the EJX series.

Silicon resonant sensors operate on the principle of two resonators imbedded in a silicon substrate and vibrating at a given resonance frequency, free of pressure application. Pressure acting on the sensor causes the compression of one of the asymmetrically arranged resonators and the extension of the other, leading to a decrease or increase in resonance frequency. This frequency differential directly reflects the static and differential pressure. Due to the unique mechanothermal properties of monocrystalline silicon, negative influences resulting from changes in temperature and static pressure are reduced to a minimum. DPharp sensors (DPharp = Differential Pressure / high-accuracy resonant pressure) deliver a quasi-digital signal, which can be fed directly into a Hart bus or fieldbus without A/D conversion.

In the latest version of its Centum CS 3000 distributed process control system (Release 3.05), Yokogawa has once again introduced a decisive improvement in performance and versatility. New remote operation and monitoring functions guarantee its leading position in sophisticated process control, e.g. in mid- to large-scale petrochemical and chemical plants, refineries and other processing facilities. The new Centum CS 3000 R3.05 was developed to permit continued integration of additional functions – while fully retaining existing functionality – and to increase the system’s openness and reliability. The key is a state-of-the-art Vnet/IP system control bus with a data transfer rate of up to one gigabit per second. Based on technology developed for general-purpose Ethernet applications, Vnet/IP combines exceptional reliability with the real-time capacities of the conventional Vent control bus. Vnet/IP makes it possible to connect control LANs to data LANs, which in turn allows integration into higher-order operational support and control systems.

Remote plant operation, monitoring and engineering can now be executed on a general-purpose PC, or mobile terminals not connected directly to the control bus, using the terminal server function of Windows Server 2003. Up to eight remote operation and monitoring terminals (clients) can be connected to the system, allowing remote access from multiple locations – revolutionary, considering that as a rule only one client was available in the past. The clients have access to all remote functions and safety features. Screen update intervals as short as one second, along with a window mode that displays multiple views simultaneously, gives the remote operator all the information and user-friendliness expected from a modern control room.

Hall 7, Booth D14

EJX series cpp 433

Centum CS 3000 R3 cpp 434

More information about EJX instrument series

Overview Centum CS 3000 R3