Main function of optical fiber temperature measurement
Publish:Box Optronics  Time:2018-09-15  Views:536
The fiber optical temperature measurement is a new technology which developed in recent years, and some excellent characteristics. like other new technologies, the fiber optical temperature measurement a panacea. it is not a substitute for traditional methods, but supplement and improvement of traditional temperaturmessmethoden. through the use of its strengths, new solutions for the temperature and technical applications drawn up as follows:
Temperature measurement under strong electromagnetic fields. high frequency microwave heating methods and attention of the people, and will be gradually extended to the following areas: high-frequency hot metal, welding and hardening, vulcanization of rubber, wood and cloth, and drying of pharmaceutical, chemical and even home cooking and the like. the fiber optical temperature measurement has an absolute advantage in these areas, since it has no additional warming through conductive parts, and which is immune to electromagnetic fields.
Temperature measurement of electrical hv equipment. the most typical application is the temperature of the hochspannungstransformatorwicklung hotspots. uk energy research centre, from the mid 1970s began to devote on the topic of research, initially for the fault diagnosis and prediction, and later for the application of computer power management and security in the überlastbetrieb, the r & d process at the highest level status. another type of application is for hochspannungsvorrichtungen as generators, hochspannungsschalter, überlastungsschutzvorrichtungen and overhead lines and erdkabel.
Temperature measurement of the production process and equipment of combustible and explosive materials. the optical fibre sensor is essentially a fire and explosionsgeschütztes device requires no explosion-proof measures and is very safe and reliable. compared with electrical sensors, it can reduce cost and increase the sensitivity. for example, useful, the work of the major chemical reaction vessel in a high-temperature hochdruckzustand, real-time monitoring of the temperaturcharakteristik the hearths, the correct surface; the optical fiber along the surface of the reaktionsgefässes placed to ensure gerasterten, so that every r hot spots is monitored, can effectively prevent accidents.
Temperature measurement of hochtemperaturmedien. in the metallurgical industry, if the temperature is higher than 1700 or 1300 mas degrees.] c, but not high temperatures and harsh conditions, there are still many challenges in temperature. use the advantages of fiber optical temperature measurement, some of which are expected to be resolved. for example, the continuous temperature measurement of molten steel, molten iron and ancillary equipment, the temperature distribution of the hochofenkörpers etc. with such research at home and abroad.
Safety assessment of the bridge. within the framework of the project on inspection of domestic brückensicherheit is a fasergittersensor used to spannungsbeanspruchung and temperature of the bridge under different conditions). in the front of the bridge selected eight laid faserdehnungssensor and four fasergittertemperatursensor grids, the fasergitter - dehnungssensor 8 connected in series to a path, four temperature sensors in series with a path, and then through the optical faserübertragungs go to brückenverwaltung to the central administration : the bridge to realize. from the test results are of fbg sensor received test data with the expected results match.
Stahlgusstest. caster during the casting of molten steel is oxidized in order to improve quality, and to prevent liquid steel in a state separated completely from the air, flows from the gießwanne big bag is desired. but in fact, if the big package finished casting is determined by a user visually whether the outflow of slag, and between 5 to 10 minutes before the end of casting large package, the sealed state is destroyed. in order to prevent the quality of the slab is deteriorated and the slag has been misjudged, a faserschlacke - erfassungsvorrichtung developed.