It is a gas industry term with good stability. It is used to calibrate measuring instruments in the fields of chemistry and physics. From the distribution of application fields, there are many types of petrochemical and environmental testing standard gases.
Preparation of standard gases
Static gas distribution method: mainly refers to adding a certain amount of gaseous or vaporous raw materials into the container, and then entering and leaving a force of diluent gas. In terms of concentration, it needs to be calculated according to the amount of raw gas and dilution gas added and the volume of the container. As for the raw gas, it can be pure gas or mixed gas. Because some gases are chemically active, they are prone to chemical reactions when they come into contact with the vessel wall for a long time. And because the container wall also has a certain adsorption effect, it is easy to cause the configuration of the impure concentration of the gas to change with the time of placement, especially the configuration of low-concentration standard gas is prone to obvious errors.
The role of standard gas and which industries can it be used in
From a functional point of view, the traceability of measurement can be established, such as transferring its value in different spaces and times, so that the actual measurement results can be traced in measurement. It can also be used to calibrate measuring instruments to ensure accurate and consistent test results, which is conducive to promoting the steady development of measurement technology and quality supervision; in terms of use, it can be used for atmospheric environmental pollution monitoring, such as vehicle tail-end testing and liquefied petroleum gas calibration Standard, etc., regularly calibrate various instruments and meters used for monitoring; it can be used for home environment monitoring, such as calibration used to detect toxic substances such as formaldehyde, stupid and other instruments contained in decoration or furniture materials.
Post time: Mar-22-2022