EmailGCTD-100 Enrichment Analyzer is a pretreatment device of GCOM series gas chromatography analyzer, which is a kind of single-channel cold trap enrichment and thermal desorption analysis instrument with auto direct sample introduction. GCTD-100 adopts a gas path design combining pneumatic six-way valve with solenoid valve group, and uses Tenax or activated carbon adsorption tube as the enrichment and thermal desorption analysis tube to concentrate trace VOCs in the air, thereby reducing the detection limit of gas chromatography analyzer.
Features
Simple operation: adopt software control in the whole process to realize automate the process
Cold trap adopts semiconductor refrigeration; the cooling temperature of the cold trap is -10℃ (at room temperature), which meets most requirements of low-temperature enrichment
Direct sample injection is used for enrichment and desorbtion analysis without disassembling the adsorption tube
Network synchronization interface to simultaneously start chromatographic analyzer or workstation while injecting samples
Wide versatility: can be matched with most gas chromatography products
Automatic back blowing of gas path to reduce residue of the last sample and improve the accuracy of next measurement, avoiding cross contamination
Periodic sampling can be set to realize unmanned online monitoring
Applications
Used together with the chromatographic analyzer or workstation for the detection of trace volatile organic compounds in environmental air at factory boundary, indoor environmental air and in the atmosphere.
Specifications
Principle: electronic refrigeration thermal desorption
Effective enrichment efficiency: 50~100 times
Temperature range of desorbtion analysis: 200℃~300℃
Recovery rate of desorbtion analysis:＞95%
Purge flow: 0~200mL/min (continuously adjustable)
Sampling time: 0~30min
Analysis time: 0~20s
Temperature control precision: ?1℃
Repeatability: RSD≤2%
Enrichment analysis period: 30min~60min
Communication protocol: Modbus-RTU
