I. Temperature Instrument Factory
1, Xi 'an Instrument Factory was founded in 1954, which is the first five-year plan in China. The first large-scale instrument factory in New China aided by the former GDR was officially put into operation in 1960. It is one of the largest manufacturers of comprehensive industrial automation instruments and equipment in China. The company mainly produces testing, automatic regulating instruments and complete sets of control devices required by petroleum, chemical industry, power station, metallurgy, textile, machinery and electronics, scientific research, military industry and other industrial departments, and exports complete sets of projects. At present, the company's products conform to the industrial policy of equipment manufacturing supported by the government and enjoy preferential policies for the development of the western region.
Xi 'an Instrument Factory currently covers an area of 205 mu, with a building area of113000m2. It has 795 employees, national pressure testing center, provincial technical center, industrial automation instrument research institute and installation company with national second-class installation qualification. It has a set of organizational ability and technical force from system design, microcomputer application software technology, complete supply, instrument panel manufacturing to debugging and trial operation, and has provided thousands of advanced and reliable complete sets of automatic control systems for power stations, metallurgy, petrochemical, textile, food and other industries.
2. Yuyao Temperature Instrument Factory Co., Ltd. is a "national high-tech enterprise" and "Zhejiang Province enterprise that respects contracts and keeps promises". The company mainly produces "Baogong" industrial automation instruments, and has the ability to mass-produce field measurement and control instruments with accuracy better than 20/10000. More than 5,000 kinds of pointers, digital displays, LCD display instruments and sensors with different surface sizes and various measurement and control methods have been developed and produced, which are famous in the market for their good reliability, powerful functions, convenient operation, high cost performance, quality of service and integrity. It is the first choice for experimental instruments, packaging machinery, rubber and plastic machinery, medical instruments, food machinery, power stations, design institutes and other industries. It is widely used in the measurement, alarm and automatic control of parameters such as temperature, pressure, humidity, flow, material level, time, counting, power consumption and process flow, and has won many honors such as "national new product", "spark" and "patent" and has been drafted. The company was also rated as "the largest industrial enterprise in Zhejiang Province" by Zhejiang Statistics Bureau.
3. Hangzhou Prisong Temperature Instrument Co., Ltd. is located in Long Zhen Wu, Xihu District, Hangzhou, with a superior geographical position. Beside the bridge along the Yangtze River, the traffic is convenient, only15km away from Hangzhou Xiaoshan International Airport, and the Shanghai-Hangzhou-Ningbo Expressway passes through the territory. Our company is one of the domestic manufacturers specializing in producing pressure thermometers and thermostats. The products have complete varieties and specifications, and have provided professional supporting products for printing and dyeing, HVAC, refrigerant, metallurgy, electric power, chemical fiber machinery, plastic machinery, petrochemical industry and building management system and other related industries for many years.
Second, the working principle of bimetallic thermometer
The working principle of bimetallic thermometer is to use two metals with different temperature expansion coefficients. In order to improve the sensitivity of temperature measurement, metal sheets are usually made into spiral coils. When the temperature of multi-layer metal plate changes, the expansion or contraction of each layer of metal is different, which makes the spiral coil roll up or loosen.
Because one end of the spiral coil is fixed and the other end is connected with a freely rotating pointer, when the bimetal feels the temperature change, the pointer can indicate the temperature on the circular scale.
Common temperature instruments in the market include thermometers, temperature recorders and temperature sensors. They are either widely used or poorly understood, but they all belong to the products of temperature instruments, so they can all play a role in temperature detection. Of course, Bian Xiao suggested that friends with large orders who want to reduce the purchase cost, or friends who have higher requirements on quality parameters and measurement data, refer to the following information to help ensure reasonable results.
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