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As the name implies , an anemometer is an instrument for measuring air velocity. It uses a high-performance wind speed sensor and a complete microcomputer detection and control instrument, which can simultaneously monitor and display the measured wind speed changes. The principle is to place a thin metal wire in a fluid, pass an electric current to heat the metal wire, and make its temperature higher than the temperature of the fluid. Therefore, the metal wire anemometer is called a "hot wire". When the fluid flows through the metal wire in a vertical direction, it will take away some of the heat of the metal wire, causing the temperature of the metal wire to drop. According to the forced convection heat exchange theory, it can be derived that there is a relationship between the heat Q dissipated by the hot wire and the velocity v of the fluid. Metal wires are generally made of metals with high melting points and good ductility, such as platinum, rhodium, and tungsten. The commonly used wire has a diameter of 5μm and a length of 2 mm. The smaller probe has a diameter of only 1μm and a length of 0.2 mm.
According to different uses, hot wire probes are also made into double wires, three wires, oblique wires, V-shaped, X-shaped, etc. In order to reduce the strength, metal film is sometimes used instead of metal wire. Usually, a thin metal film is sprayed on a thermally insulating substrate, which is called a hot film probe. Hot wire probes must be calibrated before use. Static calibration is carried out in a special standard wind tunnel, measuring the relationship between flow velocity and output voltage and drawing a standard curve. Dynamic calibration is carried out in a known pulsating flow field, or adding a pulsating electrical signal to the anemometer heating circuit to check the frequency response of the hot wire anemometer. If the frequency response is not good, it can be improved with the corresponding compensation circuit.
The flow velocity measurement range of 0 to 100m/s can be divided into three sections: low speed: 0 to 5m/s; medium speed: 5 to 40m/s; high speed: 40 to 100m/s. The thermal probe of the anemometer is used for accurate measurement of 0 to 5m/s; the rotary probe of the anemometer is most ideal for measuring the flow velocity of 5 to 40m/s; and the use of the pitot tube can obtain the best results in the high-speed range. The American Siargo digital micro differential pressure sensor - FSP1000 series from Gongcai.com has high sensitivity, extremely small starting flow , and fast response speed; it has low pressure loss output (EI 2C; V-analog voltage, optional E and EV), differential pressure range (optional 250 and 500); the unit of the differential pressure range is Pa, for example, 250 represents a differential pressure of. +250Pa The standard output of the sensor is IC, and the analog voltage output is an option.
Xiamen Rongfeng Electrical Equipment Co., Ltd. is located in Xiamen, Fujian Province. Its business scope covers East China, South China, North China, Southwest China and other parts of the world. Main DCS control system spare parts, PLC system spare parts and robot system spare parts, advantage brand: Allen Bradley, Bently Nevada, abb, Emerson ovation, Honeywell DCS, Siemens. Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc, Motorola, hima, prosoft and other imported industrial parts, the company always adheres to the business philosophy of "integrity, efficiency, win-win and innovation", and serves every new and old customer with the working attitude of "quality assurance, honest service, customer first", relying on competitive product prices, huge inventory and excellent quality, Fast delivery time and full range of pre-sale consultation, after-sales service, continue to provide customers with high-quality products, the main products are widely used in electronics, metallurgy, chemical industry, power plant, steel plant, rubber, cement, mechanical equipment, construction and other industries.
Main products, superior supply and sufficient stock：
All brands DCS, PLC spare parts:
1：Invensys Foxboro: I/A Series system, FBM (field input/output module) sequence control, trapezoidal logic control, accident recall processing, DAC, input/output signal processing, data communication and processing.
2：Invensys Triconex: Redundant fault-tolerant control system, the most modern fault-tolerant controller based on triple modular redundancy (TMR) structure.
Westinghouse (Westinghouse): OVATION system, WDPF system, MAX1000 system spare parts.
3：Rockwell Allen-Bradley: Reliance Ryan, SLC 500/1747/1746, MicroLogix/1761/1763/1762/1766/1764, CompactLogix/1769/1768, Logix 5000/1756/1789/1794/1760/1788, PLC-5/1771/1785, etc.
4：Schneider Modicon: Quantum 140 series processors, control cards, power modules, etc.
5：ABB: Industrial Robot Spare Parts DSQC Series (No. 2, No. 3, No. 4, No. S4C, No. S4C, IRC5), Bailey INFI 90, etc.:
6：Siemens (SIEMENS):Siemens MOORE, Siemens Simatic C1, Siemens CNC system and so on.:
7：Motorola (Motorola): MVME 162, MVME 167, MVME1772, MVME177 and other series.
XYCOM:I/O, VME board and processor.
8：GE FANUC (GE FANUC): modules, cards, drives and other spare parts.
9：Yaskawa (ochuan): servo controller, servo motor, servo driver.:
10：Bosch Rexroth (BOSCH Rexroth): Indramat, I/O module, PLC controller, drive module and so on.
11：Woodward (Woodward): SPC valve position controller, PEAK150 digital controller.
Spare parts for industrial robot system
Advantage Brands: ABB Robots, FANUC Robots, YASKAWA Robots, KUKA Robots, Mitsubishi Robots, OTC Robots, Panasonic Robots, MOTOMAN Robots, etc.If you need, we can solve your defect part or exchange. Welcome to inquire! We will give you the best service!
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