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The Er2 indicator will appear on the host temperature display, and the instrument will not boot normally. In this case, first consider whether the ambient temperature is up to standard. Analytical instruments and equipment imported generally require an ambient temperature of around 20 and a humidity below 60%. Otherwise, the normal operation of the instrument will be affected. The method to eliminate such failures is very simple, increase the indoor temperature, and it can be restarted after about 40 minutes.
(2) The amount of sample injection will also directly affect the accuracy of the test results. The larger the amount of sample injection, the higher the peak value of the curve, but the excessive injection volume will result in low or incomplete combustion efficiency. In addition, if there is suspended matter in the sample, it must be filtered out. For the American Apollo 9000 TOC analyzer, if it is manual injection, the general concentration can be injected 50L below 100mg/L; the concentration is in the range of 100~500mg/L, the injection volume is 30~40L; 500~2000mg/L, into The sample volume is 20~30L; 2000~5000mg/L, the injection volume is 10~20L; more than 5000mg/L, the injection volume should not exceed 15L. (3) The preparation of the standard solution must be accurate (accurate weighing and constant volume), and the standard solution should be prepared with distilled water that does not contain organic substances. (4) The carrier gas must be of high purity (99.999%). After the acidification of the water sample, aeration is carried out. The inorganic carbonate is decomposed into carbon dioxide and driven back into the high-temperature combustion tube. The total organic carbon can be measured directly. It can be seen that the purity of the carrier gas directly affects the accuracy of the measurement results.
Organic Carbon Analyzer Troubleshooting and Simple Troubleshooting
Analytical instruments obey certain logic arrangements, and all parts of the instrument are systematically working in a logical relationship to ensure that they perform all the functions they possess. Therefore, regardless of whether any part of the instrument or any component of the part is damaged, Changes in their performance parameters may cause the instrument to be disorderly or not work at all. There are many reasons for the formation of failures, which are broadly divided into external factors and internal factors. 3.1? Causes of External Causes The TOC Analyzer must be well grounded at the beginning of installation, and it is better to have a power supply. Because the city grid is unstable, the power supply fluctuations exceed the regulations or other interference signals, and the instrument is not normal. Work, but damage the instrument. Also pay attention to the indoor temperature and humidity where the equipment is installed. (1) When the TOC analyzer is turned on (especially cold winter),