10 kinds of gas chromatograph detection failure method
Wuhan Tateworth Technology Co., Ltd. is a leading supplier of gas chromatographs, liquid chromatographs, and portable chromatographs. Here are 10 ways to detect malfunctions in a gas chromatograph.
Gas chromatograph is widely used in petroleum, chemical industry, biochemistry, medicine and health, food industry, environmental protection, etc. It can be used to determine the distribution coefficient and activity coefficient of the sample on the stationary phase, in addition to quantitative and qualitative analysis. Physical and chemical constants such as molecular weight and specific surface area.
Gas chromatograph has different faults, either large or small, and there are more than one way to detect faults:
1. Observation method
This method is mainly to find faults by visual observation, we are collectively referred to as the observation method. The observation method is mainly used to check the deterioration of parts of the gas chromatograph, circuit board leakage welding, imaginary welding, short-circuit between lines, cracks, broken wires, and component welding errors.
2, dynamic observation method
Through the demonstrator to observe the waveform of the point, so as to find the fault to eliminate faults is called dynamic observation method.
3, static measurement
This is mainly through the multimeter to measure the DC operating voltage phase current in the line to determine the fault. Late is a common method of troubleshooting, which is especially important for testing linear circuits.
4, split method
In the process of searching for faults, the scope of faults is gradually narrowed by unplugging part of the circuit board, unplugging part of the circuit board, or disconnecting the circuit board. Finally, the method of isolating fault points is called segmentation method.
5, tracking method
Finding a clue in the process of finding a fault, tracking down the clue is called tracking.
6, touch method
Through the touch-mold method (that is, the human finger or other parts to touch the components), to find out whether the gas chromatograph components are overheated or should be hot and not hot (such as the power transformer and the electron tube should have a fever phenomenon), The method of indirectly determining the fault location is called the touch-mold method.
7, replacement method
The method of determining the fault within a certain range by replacing the electric wire, circuit board, electron tube, or other parts is called a replacement method.
8, simulation method
In the process of searching for faults, the faults can be determined by comparing the same points of the non-faulty instrument and the instrument.
9. Heuristics
In the process of searching for faults, such as measurement and analysis, several reasons can cause such failures. At this time, you can try to use a method to eliminate the fault first. If it is invalid, then try another method to test it. To troubleshoot this, this is called heuristics.
10. Local heating method
The instrument malfunctions due to the increased humidity and is usually ruled out by local heat. For example, one of the instruments does not work properly at a temperature of 40°C, but works normally when the temperature drops. The team can restore the instrument to work at room temperature. He uses a hot air blower or electric iron to localize it to the pool and discover the fault. This is called local heating.
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