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Temperature temperature sensor fault analysis and treatment method of

electromagnetic interference problems

motors, large machinery, reaction kettle, electric equipment, transmission lines, radio, or even the casual after can produce large equipment of electromagnetic field, the basic can have conduction or radiation of electromagnetic wave, there are many different kinds of electromagnetic interference and can't. Therefore, experienced engineers and technicians in the field should carefully analyze their field environment, take necessary measures. At the beginning of the design, the electromagnetic interference as the key of prevention, to nip in the bud, efforts to reduce the trouble in the process of subsequent use.

the temperature of the temperature sensor test, test methods,

in the temperature of the temperature sensor should be regularly check the temperature sensor in use process and performance test, temperature sensor temperature daily examine the content of the project mainly includes are shown in table 1. In temperature sensor for temperature in daily inspection at the same time, also deal with temperature of the temperature sensor measurement performance and insulation performance tested periodically, usually require inspection cycle is not more than 1 year. Temperature of the temperature sensor is insulation performance tests shall be carried out in the case of power failure. With 500 v megohmmeter after remove the connection test temperature sensor terminals of the insulation resistance between the shell and the

what is the temperature sensor temperature

temperature temperature sensor is the physical measurement signal or ordinary electrical signal is converted into a standard electrical signal output, or can output devices in communication protocol manner. It is mainly used for industrial process measurement and control of the temperature parameters. Current temperature sensor will be the main loop of the measuring ac stream into constant current loop standard signal, continuous transmission to the receiver.

temperature variables into can transmit the standardization of the output signal of the instrument, 4 - in the industry 20 ma is common)

temperature thermocouple, heat resistance temperature sensor used as the temperature measuring element, from the output signal of temperature measuring element to the temperature sensor module, after filtering, arithmetic amplifier, nonlinear correction, V/I conversion, constant current and reverse protection circuit processing, convert and a linear relationship with temperature of 0 to 4 ~ 20 ma current signal 5 v / 0 - 10 v voltage signal, RS485 digital signal output.