13Yokogawa 100th Anniversaryaccuracy of ±0.02%, which is the same level of precision as the Japan national standard. To stay accurate, measuring instruments must be calibrated; the equipment used to calibrate these instruments must also be calibrated, and that equipment must be calibrated as well... And so the cycle goes on. The national standard brings this cycle to a realistic conclusion, and the highest-level measuring instruments are referred to as “gods” in the industry. Yokogawa’s APR-2 power meter boasts such good performance that it has been purchased by another country’s national institute of standards and technology. Yokogawa has kept up with the latest technologies and holds the top share of the global high-end power analyzer market with the WT3000E precision power analyzer, and is once more in the limelight due to the current demand for further improvements in energy efficiency.The unrivaled precision of Yokogawa’s instruments has its origins in our emphasis on getting back to the basics with a theory- and principle-based approach to measurement, as it is applied in research and development. Measurement of a physical substance, energy, and so on requires the manipulation of a target object and the capturing of data on its response. The first consideration in this is how to get the most accurate and detailed measurement of a target object. Yokogawa has wholly focused its efforts on this in its development and production of devices used to measure items such as power, pressure, temperature, and flow rate. We never take our eyes off what is being measured, and our strengths lie not only in efficient digital processing and the analysis of measurement signals and data, but also in the fundamental technologies that rely on analog elements to capture signals and data. Our pioneering DPharp differential pressure/pressure transmitter was developed based on just such a theory- and principle-based approach. The application of pressure on H shaped resonators thinner than a human hair stretched out inside a tiny package causes a change in resonance that is converted to an electric signal and digitized. The maximum possible repeatability and stability (fluctuation of ±0.02% over a 15 year period) have been achieved by increasing sensitivity CSU-W1 confocal scanner unit. This product series won the Okochi Memorial Technology PrizeDPharp, a pioneering differential pressure/pressure transmitterCross section of a silicon resonant sensorand reducing the effects of temperature changes and other environmental factors. This has been done by fabricating the sensor from a single silicon crystal and positioning it inside a vacuum chamber. By eliminating the need for periodic zero adjustments and the use of valves in this procedure, and by lengthening the calibration interval, we have made it possible for our customers to dramatically reduce their maintenance costs. And with a single DPharp transmitter, users can perform multiple types of measurements, eliminating the need for multiple transmitter types. All this is made possible by micro electro mechanical systems (MEMS) technology, which is another major weapon in Yokogawa’s armory. A winner of the Okochi Memorial Technology Prize, our confocal scanner unit product has successfully resolved the issue of how to continuously capture images of live cells in real time at speeds approaching a thousand times per second. This relies both on optical measurement technology, a Yokogawa strength, and mechatronics technology. The high imaging speed is accomplished through the use of a laser beam that passes through a microlens attached to a disk with up to 20,000 pinholes to illuminate a specimen. This enables the dynamic movements of living cells and their organelle to be captured, making a great contribution in a wide range of fields, from basic biology through to the development of new drugs. Our development of other products such as vortex flowmeters has also been based on such basic theories and principles. Through our rigorous approach to research and development and our A Theory- and Principle-based Approach to Measurement1Dr. Yasujiro Niwa was the first person in Japan to successfully carry out experiments with wireless telephotographic transmission, the first president of Tokyo Denki University, and a recipient of the Order of Cultural Merits. Around 1918 – 1919, at the telecommunications ministry, he suggested that Shin Aoki manufacture British-style measuring equipment in Japan, and later summed up his actions by writing, “In those days it was thought that the Japanese could never make such precision instruments, and demand for Japanese instruments was low. But Mr. Aoki accepted the challenge, and we were greatly pleased when, after one year of intensive research, he succeeded in building a meter that outperformed Western products.”
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