AMA – GC 5000 Gas Chromatograph

Online GC systems for continuous monitoring of organic compounds in air and gaseous samples

 

Beschrijving

AMA Instruments offers various series and configurations of online GC’s for Air Quality & Industrial Site Monitoring of organic compounds covering a wide range of application requirements.

The AMA GC 5000 series has especially been developed for demanding applications and features a temperature programmable column oven allowing for optimized peak separation. Various enrichment modules extend the range of monitoring applications to concentration levels in the ppt range making the GC 5000 series a perfect choice for air quality and industrial site monitoring applications.

Online GC systems of AMA Instruments have especially been developed for continuous operation under harsh conditions, such as in monitoring stations, mobile labs or at industrial sites. The instruments are characterized by their rugged and easily accessible design as well as their superior operational safety.

Convenient handling and operation
Each GC system features an integrated industrial PC providing easy access to all important analyzer functions. The glass front panel with fully integrated and high resolution 12,1″ capacitive touch display allows for intuitive setup and operation of the GC systems.

All analyzers will be controlled by our powerful AMA System Control Software with fully integrated PEAK.log™ Chromatography Data System. This enables the operator to easily setting up the instrument and observing the status of the gas chromatograph at site or remotely.

Superior operational safety
The AMA System Control Software continuously monitors all important parameters of the gas chromatograph. Any deviation from the normal operation will be recorded and saved into a SQL database. In case of permanent malfunctions or a serious instrument failure an error message will be transmitted to the data logger or control room.

Detector

The GC 5000 series can use either a Flame Ionization Detector (FID) or a Photo Ionization Detector (PID).

The Flame Ionization Detector (FID) is well known for its versatility and provides a linear signal over a wide measuring range. This robust type of detector has proven to be extremely reliable over decades of practical use. Operation of the FID requires supply of hydrogen and combustion air.

The Photo Ionization Detector (PID) allows for sensitive detection of aromatic hydrocarbons and other organic compounds characterized by their low ionization potential. As this type of detector does not provide a linear output signal, calibration of the PID requires additional time and effort compared to a FID.

Zero-/Span Gas valves

This option allows for fully automated validation of the gas chromatograph during operation. Software controlled solenoid valves will switch as selected between the sample port and two additional ports e.g. for zero air and span gas.

Stripping Column Device

This option allows the retention and back-flushing of high boiling components and/or humidity in a pre-column installed upstream of the analytical column in order to separate them from the compounds to be analyzed. This protects the analytical column and allows for short analytical cycles.

Enrichment Modules

For determination of organic compounds at extremely low concentration levels — e.g. for ambient air monitoring, purity control of industrial gases or occupational health and safety monitoring — the GC 5000 series can be provided with a single or dual stage enrichment module.

Our single stage enrichment module allows for pre-concentration of higher boiling organic components using suitable adsorbent materials. During sampling and sample pre-concentration the sampling flow rate will accurately be monitored and controlled using a high precision digital Mass Flow Controller (MFC). When sampling is completed, the analytes will automatically be introduced to the analytical column by means of thermal desorption technique.

Our proprietary dual stage enrichment technology has especially been developed for quantitative pre-concentration of even extremely volatile organic compounds. After pre-concentration and subsequent release by thermal desorption, the components will be trapped in a second stage. Only now the sample will be transferred to the analytical column by rapid heating up of the focusing capillary in order to start the next analysis run.

 

Active heating of the enrichment tube as well as active cooling using a peltier cooler allows for precise temperature control during sampling and sample introduction.