A liquid sealed sampler is a device designed for collecting and storing liquid samples. Its core is to isolate the sample to be collected from the external environment through a specific method and conduct sampling in a sealed state to ensure the accuracy and reliability of the sampling process, while ensuring that the sample is not contaminated or damaged during the sampling process.
Working principle and application scenarios
The working principle of a liquid sealed sampler covers both the sampling principle and the sealing principle. The sampling principle focuses on ensuring the accuracy and correctness of sampling, avoiding sample contamination or damage; The principle of sealing emphasizes that during the sampling process, the sampler should always maintain a sealed state with the external environment to resist potential interference or pollution from external air or other substances in the sampling process. This design is suitable for sampling toxic and harmful liquid media, which can effectively reduce material leakage or volatilization, protect personnel safety and environmental pollution.
The liquid sealed sampler maintains the airtightness of the sample during the sampling process through a specific sampling container and sealing mechanism, preventing contact or contamination between the sample and the external environment. Usually, pressure resistant sampling containers (such as glass bottles, metal cans, etc.) are used to connect the inside of the container with the container of the substance to be sampled through the control of the injection valve and the output valve, achieving sample collection. During the sampling process, the sample is isolated from the external environment inside the container to ensure its purity.
structural composition
Liquid sealed samplers have a wide range of applications in multiple fields. For example:
Environmental monitoring: used for sample collection of atmosphere, water quality, and soil.
Grain monitoring: In the field of grain monitoring, it is used for quality inspection sampling and grain height measurement. Hollow poles are directly inserted into the grain and sampled at a predetermined grain height to obtain grain quality inspection samples.
Petrochemical industry: Due to the wide variety of hazardous chemicals involved, safety during sampling is crucial. If it is necessary to ensure the safety and accuracy of sampling, and the medium is hazardous, a closed sampler becomes a more suitable choice.