This paper describes recent technical trends and Fuji Electric's present status and prospects for measurement and control systems: To meet the demands for PA and FA sensors, sensor technology has been developed, such as, sale of new-generation electronic transmitters FCX series, enlargement of fiber-optic field instrumentation system FFI, and expansion of analysers. In the field of control, distributed control systems MICREX promoting total automation and EIC integration have been expanded, miniautomation systems, FREE LINK SYSTEM using temperature controllers Z-series have been diversified and advanced-control/AI-technology have been applied.

Fuji Electric has developed new-generation FCX-series transmitters utilizing up-to-date microcomputer-application technology. The new pressure sensor is especially small in size compared with conventional sensors resulting from the application of fine-machining technology and semiconductor wafer process, and moreover has high accuracy and a wide measuring range. Small-sized detectors are prepared for wide-ranging objects in processes, and their circuits are made intelligent by electronics for improvement in functions and performances.

The FFI system makes good use of many merits of fiber-optic transmission in field instrumentation. This third-generation system has been developed following pneumatic and electronic systems and is now used in various plants independently or mixed with conventional ones. The FFI system and its components have often been described; this paper introduces an outline of new FFI members, that is, optical-pneumatic positioners, flow integrator (differential pressure type), optical field indicator, and rack type master station.

Fuji Electric has put new-series general-purpose Micro Controller on the market : general-purpose Micro Controller E and sophisticated-function Micro Controller H. In addition, it offers small-scale instrumentation systems using the communication function of the Micro Controller H : P&Z system combined with general-purpose personal computers and F&Z systems combined with programmable controllers MICREX-F. This paper introduces the FREE LINK SYSTEM mainly on its applications to actual processes.

The distributed control system MICREX has been upgraded several times since it was put on the market in 1975. The upgrade in the fall of 1987 remarkably improved its scale, function and performance. MICREX system has got many experiences by thanks of user's good evaluation. During these projects, there have been various improvements on MICREX due to user's demands and advanced technology introduction. This paper descrives some of these improvements.

Telemeter and telecontrol equipment has increasingly demanded high-speed transmission of large-capacity data to meet market needs for application to new fields and expansion of centralized management. Fuji Electric has developed new telemeter and tele-control equipment SAS-50/500 using an HDLC system in transmission protocol. It is capable of high-speed transmission at 9600 bits/s, monitoring with transmitting capacity of 1024 points and measuring at 256 points, and also realizes free system configuration in radial/combined/hierarchical patterns by adopting modular units and others.

Practical use of advanced control including artificial intelligence is increasing in the fields of process control, factory automation and mechatronics. The AWS aims to raise efficiency in engineering work for these applications. The workstation mounts a "software package for total control system design" which mean expert control and conventional control based on mathematical models. Its multiwindow system, interactive processing in Japanese menus, and graphics output facilitate modeling of control objects, control design, and structuring of knowledge bases.

Thermal power generation, a main energy supply for industrial circles, has been much affected by energy-source situation change after the oil shock and economical situation change due to strong yen. On the other hand, as digital technology remarkably progressed in recent years, advanced-function, high-reliability digital control equipment has come to wide use. Also thermal power plants have actively introduced it, resulting in rationalization to cope with threes situation changes.
The paper describes technical trends of instrumentation systems in industrial thermal power plants and their applications.

While the development and commercialization of fuel cell generating plants occupies wide interest, Fuji Electric has delivered an experimental 10-kW molten carbonate fuel cell system to Central Research Institute of Electric Power Industry. The whole equipment including mechanical part, piping, electrical part, instrumentation and computers has been supplied by Fuji Electric and has the following unique features: (1) Supervisory control by new-generation fiber-optic field instrumentation FFI, (2) Remarkable automation and rationalization of start/stop, test procedure and data collection by a DCS (MICREX), (3) Wide-ranging operating condition (max. pressure: 7 kg/cm² ･G, max. temperature: 700℃), and (4) Emergency stops in three steps (ES-1,2,3).

This paper describes the trend of instrumentation technologies in iron and steel industry from a social and technical point of view through the recent system examples covering generally from blast furnace to heat treatment furnace.
The plants are showing a common tendency to introduce EIC-integrated systems, advanced control and artificial intelligence actively.

Recent improvement in energy center functions in steel works has mainly aimed at labor saving, and is showing a tendency to rationalize operation notably by replacing conventional analog with digital instrumentation.
This paper describes a DCS (Distributed Control System) applied EIC (Electric, Instrumentation, Computer) integrated system citing the energy center of NKK Keihin Steel Works, by which the computer system and data base as well as instrumentation and control are combined into a whole and remote supervisory control with telemeter/telecontrol equipment is made possible.

Recent urban incineration plants have become large and complex plants equipping with systems for anti-pollution, residual-heat utilization and others. The distributed control system (DCS) MICREX has positively been introduced for efficient, safe operation and management.
The paper describer trends of instrumentation systems in incineration plants and introduces Fuji Electric's instrumentation system IICS-1000 for urban incineration plants utilizing an up-to-date DCS. Also it refers to the computer system playing an important role in the systems.

Fuji Electric's EIC-integrated system has often been adopted for instrumentation systems in cement and glass factories. The unique control systems with many features including the distributed control system MICREX has been developed to realize the EIC-integrated system.
This paper describes the basic concept of instrumentation systems containing MICREX as a main part being used in cement of glass factories, and the features of MICREX as well.

The distrinuted control system (DCS) is usually adopted for instrumentation in chemical plants at the time of replacing conventional instruments. In particular, recent progress in the functions of DCS's has increased their applications in rationalization systems for a whole factory or a whole company.
This paper describes the purpose of DCS application, system configuration and features, and effects of its introduction, citing the case of a large chemical plant containing an explosive reaction process.

Fuji Electric has developed a distributed control system for an SBS Plant of China Petro-Chemical Corporation Yue Yang Petro-Chemical Complex Rubber Works in cooperation with Research Institute Yanshan Petrochemical Corporation Beijing China. The Chinese company possessed the process technology of the SVS plant and Fuji Electric supplied hardware. The persons concerned feel proud that this form of system installation is an item of real cooperation between the two countries.
This paper describes the SBS production line, control system configuration and device functions, control systems for reaction tanks, and man-machine interfaces.

Beer companies invest much money in equipment expansion to meet recent demand increase, diversified needs, labor saving, and improvement in beer quality and uniformity. Now highly advanced computer systems and digital automation devices are available, they are positively introducing these technologies. The paper describes the filtering process control system of Tonegawa Brewery, Suntory Co., Ltd. as an example of a modern instrumentation system in beer breweries.

Automobile factories also require a safe and efficient system for utility maintenance of increasing importance.
This paper introduces an outline of the equipment control system delivered to Honda Motors Co., Ltd. on the points of CIM configuration with factory LAN and maintenance automation as well as the quipment and system configuration.