Gas Bag Auto Sampler​
Gas Bag Auto Sampler
Analyzing gas is often seen as difficult and problematic. The chosen sampling technique and ability to handle different kinds of gas at different pressure levels and physical state is challenging to say the least.
TE Instruments has developed a unique sampling system:
The GBS (Gas Bag Sampler) is an auto sampler for sampling gas from gas bags (e.g. TedlarTM bags).
It forms a perfect match together with the XPLORER Elemental Combustion Analyzer but can also be combined with any other combustion analyzer as an excellent stand-alone sampling system, operated through the Incorporated Touch Screen.
GBS; Atmospheric gas samples.
In comparison to sampling gas using a pressurized gas cylinder, the GBS samples directly from a gas bag. There is no need for restoring the pressure resulting in easier transportation of taken samples. Additionally, the use of gas bags is cost effective and substantially lower than steel or aluminum cylinders, requiring a protective coating.
Former gas bag sampling systems were operated manually, sampling only one gas bag per analysis. The GBS can take up to 10 gas bags at the same time and analyze in sequence. This not only provides more productivity, but ensures less contamination and therefore more reliable results. Depending on the specific application, methods in the embedded software can be customized as desired by the operator. The GBS offers the operator Full Parameter Control: injection speed, cleaning sequence and injection volume are automatically controlled and monitored at all times.
Safe, reliable and robust
In most cases the type of gas to be analyzed is highly flammable and might pose a risk in the laboratory. To ensure the safest possible way of handling, the GBS is equipped with a gas leakage sensor which constantly measures the composition of the air inside the sampler. When hydrocarbons are detected, the sampler assumes there is a possible dangerous situation and aborts all activity. The user interface on the gas sampling systems and the XPLORER monitor indicate that a situation has occurred and various safety measures are taken. The introduction of sampling gas into the XPLORER system and the carrier gas flow are stopped. After inspection and correction, the reset button on the touch screen can be pressed in order to resume activity.
Truly unique: calibrating out of a single CRM
The GBS is able to create a calibration line out of a single CRM standard when connected to the XPLORER combustion analyzer. The Automatic Calibration Function will free up time from the operator, while generating the ideal calibration curve using the XPLORER. The GBS can select different volumes from 10 up to 1000 mL out of a single gas bag and introduce them automatically into the XPLORER.
Ultra-low detection
Components in gas can usually not be measured at the same low level as liquid or liquefied gas samples because of the physical laws applicable. However the GBS is able to handle these kind of samples perfectly, demonstrating a detection limit in the low ppb’s with outstanding repeatability. To avoid any cross contamination, the GBS features purge and rinse options. In the GBS the 100 mL gas tight syringe and flow path of the sampling systems are purged by carrier gas.
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Gas Bag Auto Sampler
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