Solve the problem of interference instrument, I have a!

We know that if the field measurement data, will directly affect the next construction measures, and in view of the measurement, environment demand is high. Field use display instrument, however, due to the complexity of environmental conditions, combined with the measured parameters are converted into weak low level voltage signals, and the long distance transmission to display instrument, so in addition to the useful signal, there will be some has nothing to do with the measured signal interference signal with these, it will affect the validity of the measurement result, will make the instrument will be able to work. This paper focuses on causes of interference instrument, as well as the solution to the interference, helping instrument stability and orderly work. Sensors and instruments in the field running a variety of interference, particular case is particular analysis, take different measures to different interference is anti-interference principle. The flexible strategy and universality is contradictory, the solution is to adopt the method of modularization, in addition to basic with the operation of the situation, according to different operation situations, the instrument can assemble different option to interference effectively, and improve reliability. Instrument be the main factors of interference sources in the instrument internal and external are likely to exist. On the outside of the instrument, high-power electrical equipment, power transformers, power grid can be interference sources. And inside the instrument, power transformers, coils, relays, switches, and the power cord can be interference sources. 1, the main interference sources ( 1) Electrostatic induction electrostatic induction is exist between the two teams or element circuit parasitic capacitance, take the charge in a bar through the parasitic capacitance transferred to another branch, therefore is also called the capacitive coupling. （ 2) Sense of electromagnetic should be mutual inductance between two circuits exist, the change of the current in a circuit will through the magnetic field coupling to another circuit, this phenomenon is called electromagnetic induction. Such as transformer and coil in the magnetic flux leakage, parallel to the electric wires, etc. （ 3) Leakage flu should be due to the inside of the electronic circuit element bracket, terminal or shell, printed circuit boards, capacitance internal medium such as defective insulation, especially the application of sensors environmental humidity is bigger, insulators insulation resistance drop, has led to an increased leakage current will cause interference. Especially when the leakage current flows into the measurement circuit of input stage, the impact is particularly severe. （ 4) The start of the radio frequency interference is mainly large power equipment, operation stop interference and higher harmonic interference. Such as silicon controlled rectifier system interference, etc. （ 5) Other interference field production safety monitoring system in addition to the above are susceptible to interference, because the system working environment is poor, also susceptible to mechanical interference, thermal interference and chemical interference, etc. 2, the types of interference ( 1) Norm interference norm refers to the invasion of the jamming signal is consistent in round 2 line. Norm interference source is usually a strong alternating magnetic field around the instrument affected by alternating magnetic field around the form interference and produce ac electromotive force, more difficult to get rid of the interference. （ 2) Common-mode interference common-mode interference refers to the interference signal in the 2 line through the part of land for public circuit, the signal current only flows back and forth in two lines. Common-mode interference sources are generally equipment of leakage, epd, line itself has to ground interference and so on. Due to the imbalance lines, common-mode interference will convert norm interference, is more difficult to get rid of. （ 3) Long long interference interference refers to the long-standing interference, the characteristics of such interference is a long-standing interference voltage and little change, using testing instrument is easy to measure, such as the power cord or nearby the electromagnetic interference of power line are all the work of continuous ac 50 hz frequency interference. （ 4) Unexpected transient disturbance accident transient disturbance mainly in the electrical equipment operation, such as closing or break-brake, sometimes accompanied by thunder and lightning in instant or radio equipment work. Interference can be roughly divided into three aspects: ( 一) Local generation ( Don't need the thermocouple) ； （ b） Internal subsystems coupling ( The ground path problem) （ c) External ( The interference of power frequency) 。
Guangdong Kaidi Energy Technology Co., Ltd. is devoted to satisfy our customers with a wide array of the finest using experience.
At Guangdong Kaidi Energy Technology Co., Ltd., we make sure everything we do honors that connection – from our commitment to the highest quality in the world, to the way we serve our customers and communities to do business responsibly. We are looking forward to becoming trusted supplier of every customer, inquire us at Kaidi level indicator!
Using high-quality materials to produce level gauge is one of the most important part during manufacturing.
Our company specializes in selling level gauge as well as providing relevant services.
A wholesaler should have many customized level indicator based products that could help you if you have a customized level indicator problem. It is better to treat the problem early rather than have to deal with it later. Guangdong Kaidi Energy Technology Co., Ltd. is your best choice.