Today's gas chromatograph is a high-precision, high-precision equipment that integrates light, laser, electricity, and computers. It is different from general electronic devices. It is unavoidable that some problems and faults occur during use. However, due to the user's understanding of the structure of the instrument and the limitations of its use experience, it is often at a loss what to do with the problems and problems that arise. In view of the above new situations, it is necessary to provide users with a set of easily understandable fault analysis and routine maintenance guidance. Instruct the user to check, analyze, and judge according to the phenomenon according to the phenomenon after the fault occurs, gradually narrow the scope and finally find the fault point.
Classification of instrument failures:
1, according to the causes of instrument failure can be divided into:
(1) Failure caused by improper installation, operation, and maintenance of the user;
(2) Because of the long-term use of the components on the instrument, wear, aging, instrument failure caused by exceeding the service life;
(3) The quality of the instrument itself (assembly quality, component quality) does not meet the instrument failure caused by the technical process standards identified by the national industry.
2, according to the instrument's fault procedure can be divided into:
(1) Failure of all the functions of the instrument;
(2) Some functions of the instrument fail;
(3) Damage to the components on the instrument;
(4) Do not cause damage to components on the instrument;
3, according to the location of the instrument fault distribution can be divided into:
(1) Faults in air, valve, and mechanical parts;
(2) Failure of the detector unit;
(3) Failure of the host electrical equipment, functional electronic components.
4, according to the type of phenomenon of instrument failure can be divided:
(1) Air circuit failure (leakage, blockage);
(2) Startup failure (can not start, protection);
(3) temperature control failure (abnormal temperature display, no heating, heating out of control);
(4) Abnormal spectrum faults (noise, drift, strange peaks);
(5) Detector, amplifier zeroing failure.
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