The difference between a gas analyzer and a gas detector is as follows
1. Differences in instrument structure
The structure of the gas detector is relatively simple, including only the probe (sensor) and the sensor signal conversion circuit part. The gas analyzer is not only equipped with a probe (sensor) inside, but also has a complete gas circuit system, which is a complete gas circuit system that introduces the sample gas into the instrument and then leads to venting or recovery of the instrument.
2. Different detection methods
The gas detection alarm uses the probe to be directly exposed to the measured air or sample gas environment for detection. The gas analyzer introduces the measured gas (sample gas) into the interior of the instrument through a special method for measurement, and then leads it out of the instrument for venting.
3. Different methods of controlling measurement conditions
The gas detection alarm does not have an adjustment and control part for the technical conditions of the sample gas. At the same time, it does not consider the environmental conditions of the sample gas and directly detects it.
A complete set of gas path systems and external supporting equipment inside the gas analyzer form a relatively complete chemical process flow. The working conditions of the sample gas are fully adjusted and controlled inside the gas analyzer to achieve normal and stable operation of the sensor. Purpose, this is the guarantee that the gas analyzer can obtain accurate measurement data.
4. The operating methods to complete the entire measurement process are different.
When applying the gas detection alarm, you only need to place the instrument in the atmosphere being measured, and the instrument can display the value. The gas analyzer must carefully introduce the sample gas into the instrument, and then strictly adjust the process technical conditions, such as temperature, pressure, flow, etc. Only when the operator adjusts the instrument until a stable chemical process is achieved, can the result be obtained Accurate measurement data. The data obtained before this is incorrect and must be discarded.
5. During the detection process, there are different ways to consider eliminating interference factors.
The gas detection alarm instrument measures the sensor directly in the ambient atmosphere. The structural design of the instrument and the actual use and detection process do not consider whether there are factors that interfere with the measurement in the ambient atmosphere, and it does not have the ability to eliminate various interference factors. Designing ability. When designing, selecting and using a gas analyzer for testing, various internal and external factors that affect the measurement must be fully considered and carefully eliminated one by one. Only in this way can the accuracy and authenticity of the testing data be ensured. Otherwise, improperly ignoring a certain influencing factor is not allowed and unacceptable for testing.
6. The accuracy of data is different
Gas detectors can only provide qualitative analysis results and relatively rough quantitative analysis data. The data displayed by this instrument cannot withstand scrutiny, and error analysis cannot be performed (because only when the analysis data deviates very little from the true value can we talk about "error") , Therefore, it cannot be used as accurate analytical data to determine (determine) important process improvement and adjustment measures. The gas analyzer is a strict measuring instrument that can provide very accurate data when performing quantitative analysis. This data can be used as a basis for the improvement and improvement of gas production and safety production, and can be used to guide and carry out production. Management, Quality Management and Business Administration. This kind of data can even be used as an important basis for judicial and criminal investigation work, and it can be used to litigate lawsuits and determine the boundaries between right and wrong.
