The cryogenic pretreatment system adopts electric refrigeration technology, and the refrigeration temperature can reach-100Below ℃, under cryogenic conditions, physical dehydration of the sample can achieve a dehydration efficiency of up to99%The above effectively solves the influence of relative humidity changes in the sample on the detection results, as well as the influence of water vapor in the sample on chromatographic peak drift, resulting in more accurate qualitative results; Under cryogenic conditions, the enrichment efficiency of low-carbon and organic solvent samples (alcohols, ketones, esters, etc.) can be effectively improved, reaching levels comparable to those at room temperature50More than double.

VOCsThe online analyzer adopts programmed temperature chromatography separation technology and hydrogen flame ionization detector（FID）Technology is used for sample separation, analysis, and detection. After the sample gas is dehydrated, enriched, and concentrated in the cryogenic pretreatment module, it is quickly sent to the analytical instrument through direct heating high-temperature desorption. After separationVOCsThe components enter at onceFIDThe detector detects and obtains accurate qualitative and quantitative analysis results for each individual component.

Ultra low temperature electric refrigeration technology is used to deeply remove water from samples and solve the impact of water vapor on chromatographic columns;

Low temperature sample capture, addressing low-carbon and solvent related issuesVOCsImprove the sample enrichment efficiency by addressing the issues of low enrichment efficiency and significant differences at room temperature;

Split injection technology solves the problems of peak tailing and peak broadening caused by large capacity sampling and thermal analysis, and provides more accurate qualitative and quantitative analysis results for the system;

Direct heating technology heats up quickly（>40℃/s）Rapid and thorough analysis can avoid peak broadening caused by thermal desorption, resulting in better chromatographic separation efficiency and accurate qualitative and quantitative analysis;

Using composite seasoning technology, more types of samples are captured, and more samples are detected in a single analysis.

detectability:detailsVOCsMonitoring factor list

range:（0~300）ppb

Power supply:＜1000VA，220V AC/50Hz

work environment:Temperature: （5~35）℃, humidity: （20%~90%）RH

output: 4~20mA、RS232/RS485Ethernet

size: 19"Standard chassis