Optical fiber level gauge in oil tank liquid level monitoring - Database & Sql Blog Articles

Application of optical fiber level gauge in oil tank liquid level monitoring 1. Working principle of optical fiber liquid level meter: The new optical fiber liquid level meter independently developed by Wuhan Xinyi Optoelectronics is a new liquid level developed to meet the needs of oil level measurement. meter. The optical fiber level gauge adopts the laser ranging principle, couples a laser beam into the optical fiber, and guides it to the tank top through a special collimating device. The controller and the light source are placed in the central control room, and the measurement site is completely uncharged. The system is inherently secure. Different from the old generation of optical fiber level gauges using photoelectric encoders to calculate liquid level, our company integrates the current popular laser ranging technology and fiber coupling technology to carry out liquid level measurement and signal transmission, thus making the structure of the entire optical fiber level gauge It is more concise, with higher measurement accuracy, better stability, and easier installation and maintenance. Second, the optical fiber level gauge technical description Wuhan Xinyi Optoelectronics independently developed a new high-precision optical fiber level gauge developed to meet the needs of liquid level detection of various oil tank groups, factory direct sales, first-class service, reasonable price, worth trust. The system is highly accurate, sensitive and reliable and can be used for the measurement of various types of tanks and media. In addition to liquid level measurement, display and volume, quality calculation functions, high and low liquid level settings, automatic alarm and report printing, etc., can achieve long-term continuous automatic detection of liquid level. The system's explosion-proof rating is inherently safe and can be used in any flammable and explosive hazardous location. When installing on site, if the old tank can be installed from the tank top manhole, the new tank can be reserved for the installation hole. It does not need on-site fire, only bolts and nuts are fixed, and there is no need to clean the tank during the installation process. Therefore, the fiber level gauge is especially suitable for various tanks in the flammable and explosive places in the petrochemical, metallurgical, gas and other industries. The liquid level measurement is retrofitted to increase the automated metering level and management level of the tank area. Third, the new laser-type optical fiber level gauge core system independently developed by Wuhan Xinyi Optoelectronics mainly consists of two parts, one is the sensor and the other is the controller. The details are as follows: 1. The fiber-optic liquid level sensor probe fiber-optic sensor probe is high. The precision optical coupler and the optical path adjusting device mainly complete the transmission and reception of the optical signal and the collection of the liquid level data, and the collected liquid level value is sent from the optical fiber to the controller. The probe is mounted on the top of the tank, and the use of the site is an optical signal, without any electrical signal, intrinsically safe and explosion-proof. 2. The sensor control terminal controller is composed of a power source, a fiber liquid level sensing module, a conversion circuit board and a display screen. It is responsible for modulating and demodulating the optical signal, and replacing the liquid level signal by demodulating the optical signal. electric signal. The controller has functions such as system initialization, historical data query, channel setting, time setting and factory reset. It has 4~20mA output, RS232, RS485 and GSM modules. Through these communication modules, the liquid level information can be transmitted to the industrial control system. Computer and display, etc., to achieve liquid level data display. Fourth, the characteristics of optical fiber level gauge 1, with unique modularity, isolation from the measured medium, on-site display, data memory and other characteristics, so installation, maintenance is very convenient, well received by users. 2. It adopts optical fiber to transmit signals, which has long transmission distance and strong anti-interference ability. The measurement site is not charged, and it is absolutely safe and explosion-proof. 3. High measurement accuracy, up to ±3mm, measuring range up to 25m. 4, the installation is simple, no need to clear the tank, no need to fire, convenient and safe. 5. The whole system adopts modular design, overall packaging, high reliability and low failure rate. 6, a wide range of use, can be used for the measurement of various types of tank turnover tanks and tanks. 7. Integrated interface: RS485, RS232, RJ45, 4-20 mA signal output interface. 8. The optical fiber level gauge is different from the old generation. The photoelectric encoder is used to calculate the liquid level. Our company integrates the popular laser ranging technology and fiber coupling technology to carry out liquid level measurement and signal transmission, so that the entire optical fiber level gauge The structure is more compact, the measurement accuracy is higher, the stability is better, and the installation and maintenance are more convenient. 9. Applications of optical fiber level gauges focus on atmospheric pressure tanks, pressure tanks, and storage tanks with negative pressure in petroleum, chemical, electric power, metallurgy, transportation, and defense military departments (standing tanks, horizontal tanks, spherical tanks, and inner tanks). Liquid level measurement, alarm, etc. of liquid medium such as floating roof and outer floating roof.