In the last issue of the article we introduced the first method of determining transmitter failure, the direct observation method. Simply put, it is to discover the source of transmitter failure through actual on-site observation. Today, we want to understand is to determine the transmitter failure of the second method – investigation method, continue to analyze the transmitter failure. Investigation method, that is, through the transmitter failure phenomenon and failure to produce the development process of investigation to understand, analyze and judge the cause of the failure method, specifically the following aspects. First: investigation to understand the use of the transmitter before the failure and there is no aura. Second: transmitter failure occurs when there is no ignition, smoke, abnormal odor and other phenomena;. Third: the transmitter power supply voltage changes. Fourth: investigation to understand whether the transmitter overheating, lightning, humidity, collision and other external conditions. Fifth: whether the transmitter is subjected to external strong electric field, magnetic field interference conditions. Sixth: whether the transmitter has been improperly used or misuse. Seventh: Failure in normal use, or in the repair and replacement of components after the failure. Eighth: what previous failures and repairs, etc.. Using the investigation method to repair the transmitter failure, investigation and understanding to be in-depth and careful, especially on the scene to reflect the situation of the user to verify the situation, do not rush to dismantle the transmitter overhaul. Maintenance experience shows that many of the reflection of the use of personnel is inaccurate or incomplete, through the investigation of the transmitter failure to save a lot of unnecessary trouble, through the investigation and verification can be found many times do not need to repair the transmitter. Star Instrument Sensor Manufacturing Co., Ltd. is a collection of research and development, production, sales as one of the high-tech enterprises. Specializing in the production of pressure transmitters, level transmitters, temperature transmitters, temperature and humidity transmitters, differential pressure transmitters, soil moisture transmitters, 3051 transmitters and related instrumentation accessories. Many products under the brand of Star Instruments have obtained a number of patents issued by the state, such as CE certification, IS9001 certification, SGS certification, TüV SüD certification, explosion-proof certification and so on. For product consultation, product customization, agency, technical inquiries, quotations, etc., please contact Star Instruments: 400-600-4496 !