EXPEC cryogenic enrichment VOCs online analyzer Introduction
The cryogenic pretreatment system adopts electric refrigeration technology, and the refrigeration temperature can reach below -100 °C. Under the deep cooling condition, the sample is physically dehydrated, and the water removal efficiency can reach above 99%, effectively solving the relative humidity change of the sample. The influence of the test results and the influence of water vapor on the peak shift of the sample, the qualitative results are more accurate; under the cryogenic conditions, the enrichment efficiency of low carbon and organic solvent samples (alcohol, ketone, ester, etc.) can be effectively improved. 50 times or more under normal temperature conditions.
The VOCs online analyzer uses the temperature-programmed chromatographic separation technique and the hydrogen flame ionization detector (FID) technology to carry out the separation and analysis of the sample. The sample gas is dehydrated, enriched and concentrated by the cryogenic pretreatment module, and then passed through a direct thermal high temperature desorption method. Attached, 呗 is quickly sent to the analytical instrument, and the separated VOCs components are once entered into the FID detector for detection, and accurate qualitative and quantitative analysis results of each single component are obtained. Features
Ultra-low temperature electric refrigeration technology, which removes water from the sample depth and solves the influence of water vapor on the column;
Low-temperature sample trapping solves the problem of low enrichment efficiency and large difference of low-carbon and solvent-based VOCs at room temperature, and improves sample enrichment efficiency;
The split injection technique solves the problem of peak tailing and peak broadening caused by large-capacity sampling and thermal analysis, and the system qualitative and quantitative analysis results are more accurate;
Direct heating heating technology heats up quickly (>40 °C / s), the analysis is rapid and thorough, can avoid the peak broadening introduced by thermal desorption, so that the chromatographic separation effect is better, qualitative and quantitative and accurate;
With compounding technology, there are more types of sample collection, and more samples are detected in a single analysis. Technical Parameters
Detection capability: See VOCs monitoring factor list for details.
Range: (0~300) ppb
Power supply: <1000VA, 220V AC/50Hz
Working environment: Temperature: (5~35) °C, humidity: (20%~90%) RH
Output: 4~20mA, RS232/RS485, Ethernet
Size: 19" standard chassis
Introduction
The cryogenic pretreatment system adopts electric refrigeration technology, and the refrigeration temperature can reach below -100 °C. Under the deep cooling condition, the sample is physically dehydrated, and the water removal efficiency can reach above 99%, effectively solving the relative humidity change of the sample. The influence of the test results and the influence of water vapor on the peak shift of the sample, the qualitative results are more accurate; under the cryogenic conditions, the enrichment efficiency of low carbon and organic solvent samples (alcohol, ketone, ester, etc.) can be effectively improved. 50 times or more under normal temperature conditions.
The VOCs online analyzer uses the temperature-programmed chromatographic separation technique and the hydrogen flame ionization detector (FID) technology to carry out the separation and analysis of the sample. The sample gas is dehydrated, enriched and concentrated by the cryogenic pretreatment module, and then passed through a direct thermal high temperature desorption method. Attached, 呗 is quickly sent to the analytical instrument, and the separated VOCs components are once entered into the FID detector for detection, and accurate qualitative and quantitative analysis results of each single component are obtained.
