Guangdong Pigeon Medical Apparatus Co.,Ltd
Guangdong Pigeon Medical Apparatus Co.,Ltd
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What Factors Affect the Measurement of an Oxygen Analyzer?

The main danger of oxygen is hypoxia because it can cause a series of discomforts in the human body, and severe hypoxia can even lead to death. Therefore, the use of medical oxygen analyzers is necessary to detect the concentration of O2. However, the analysis of oxygen content, especially trace oxygen analysis, in air containing up to 21% oxygen can lead to contamination and interference with samples if not handled properly, resulting in incorrect analysis data.

The factors that affect the determination of oxygen analyzers include:

  1. The calibration of medical oxygen analyzers uses a standard gas sample comparison calibration method, and the error at each point should not exceed the specified value of the verification procedure.

  2. The standard gas hood of the medical oxygen analyzer itself should be selected. If an unreasonable standard gas hood is used, unstable and inaccurate readings may occur.

  3. The flow rate of the standard gas introduced into the medical oxygen analyzer must strictly follow the instructions. Flow rates that are too large or too small will affect the detection results and cause measurement errors.

  4. If the medical oxygen analyzer is not used for a long time, it should be activated with 3% standard gas before being calibrated with 1% standard gas. Otherwise, the error at each point will not be within the qualified range, resulting in calibration failure.

  5. The pollution of medical oxygen analyzers. When reusing the oxygen detector, attention must be paid to whether air leaks into the sampling tube during connection, and the leaked air must be blown away carefully to prevent a large amount of oxygen passing through the sensor to prolong the sensor's life.

  6. The simplification and cleanliness of the gas path system of the medical oxygen analyzer. Trace analysis requires the effective elimination of dead corners in various pipes, chamfer valves, and dead corners in the meter head to prevent sample gas pollution. Therefore, the gas path system should be simplified as much as possible, and connectors with small dead corners should be used.

  7. The selection of pipeline materials for medical oxygen analyzers. The material and surface roughness of the pipeline will also affect the change in oxygen content in oxygen. Generally, plastic pipes and rubber pipes should not be used as connection pipelines, and copper pipes or stainless steel pipes should be used instead. It is important to maintain a stable calibration environment for the gas detector and avoid the impact of dramatic changes in temperature, humidity, air pressure, wind speed, etc.

In summary, medical oxygen analyzers are sensitive to changes and are suitable for continuously detecting the percentage concentration of oxygen in the air in industrial and mining enterprises. When the environmental concentration is too high, high and low limit alarms can be used to alert on-site personnel to evacuate the danger zone as soon as possible.

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