The core principle of a standard gas diluter is based on the law of gas partial pressure. When high concentration target gases (such as toxic and harmful gases) are mixed with dilution gases in a specific ratio, the two will diffuse uniformly according to their respective partial pressures, forming the desired low concentration mixed gas. This process is achieved by accurately controlling the flow rates of two gases to ensure the accuracy of the output concentration.

Instruments are usually equipped with flow meters and other devices to monitor and regulate the flow rate of diluted gases. Users can adjust the dilution ratio according to their needs, such as by changing the flow rate of the dilution gas or using electronic volume control technology to dynamically match the ratio of sample gas to dilution gas, in order to obtain a stable low concentration standard gas. Some models support multi-channel synchronous processing, such as mixing standard gases from multiple sample tanks with one dilution gas to improve efficiency.

Modern equipment often adopts a dynamic static integrated structure, which can perform static steel tank dilution in the laboratory and switch to online dynamic mode. This design not only saves the amount of standard gas used, but also achieves a single dilution ratio of up to 10000 times, without the need for secondary dilution steps, making the operation more convenient.

Precautions for using standard gas diluter:

1. Environmental requirements: It should be placed in a windless and vibration free environment to avoid impact or movement; The installation location should be kept away from damp and corrosive environments, while ensuring good ventilation and isolation from other electrical equipment.

2. Safety regulations: In case of emergency (such as malfunction or abnormality), the use must be immediately stopped and handled according to emergency procedures; Prohibit direct use of the device in the air; Do not put any liquid or solid substances inside the instrument.

3. Daily maintenance: Regularly check whether the connections of each air path are loose or leaking, and clean the filtering device in a timely manner to prevent blockage and affect the stability of the air flow.

4. Operational compliance: Strictly follow the instructions to avoid using beyond the range or frequently switching between high and low concentration ranges, in order to avoid damaging the sensor or reducing measurement accuracy.

5. Data management: Detailed records of parameter settings, actual measurement values, and other information are kept after each calibration and testing to facilitate traceability and quality control.