What is the operating process of a portable four in one gas detector
How to operate a portable four in one gas detector? How to use a four in one gas detector to detect harmful gases? Today, Ousenjie summarized and organized the operation process of a portable four in one gas detector and shared it with everyone:
① Turn on the power of the detection device, turn on the power, and the system starts preheating and self checking.
② Set the test site conversion time of the detection device to 6 minutes (unit: 1 minute, maximum value: 9 minutes), and set the conversion mode to automatic conversion.
③ Set the oxygen flow meter on the sampler to 1000 milliliters.
④ Now place the test range switch in the 25% position.
⑤ Insert the end of the sampling tube into each testing point (approximately 50 centimeters below the top plate of the tank), test the indicated value, and make a record.
⑥ When the oxygen concentration is less than 10%, the oxygen concentration testing range changes from 25% to 10%.
⑦ At the end of the test, pull out the end of the sampling tube from the test point; Repeat the above steps for the next test.
Note: When inserting the end of the sampling tube into the test point, it should be vertically lowered to avoid oil stains on the cylindrical hole wall blocking the sampling tube and affecting the test results. Sensors and instruments should be protected from water and impurities. When the instrument is not working for a long time, the power should be turned off and placed in a dry and dust-free environment that meets the storage temperature; During oxygen calibration, set the test range switch to the 25% position and calibrate the oxygen indicator to 21% with fresh air.
