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Laboratory Instruments
Gas Chromatograph
Natural Gas Systems
Shimadzu's Natural Gas Systems are specially-modified GC-8As designed for the measurement of natural gas components. Determining the composition of natural gas is important because its heating value (and price) is determined by its BTU per cubic foot.
Shimadzu's two systems conform to ASTM D1945 and D3588. Natural Gas System #1 separates C1 - C5 paraffins and isoparaffins, O2, N2, CO and C6+ by backflush. System #2 analyzes the same components, but it produces a single air peak rather than separating O2 and N2. After analysis, the mole% of each component is automatically calculated, along with the BTUs per cubic foot, compressibility, specific gravity, and relative density.
Each system is reliable and easy to operate. The PRG-102A event programmer switches the valves automatically, while the optional Chromatopac data processor controls the system operation and performs the required calculations automatically. Calibration is based on a Certified Calorific Natural Gas Standard.
System #1
| Gas Chromatography | GC-8AIT | |
|---|---|---|
| Detector | TCD for detection of C1-C5 Paraffins and Isoparaffins, O2, N2, CO2, and C6+ by backflush. | |
| Valves | One automated, air actuated, 10-port valve Two automated, air actuated 6-port valves |
|
| Columns | 6 stainless steel columns | |
| Matrix | Natural Gas | |
| Minimum sample volume | 1 mL | |
| Requires | PRG-102A, PC-17N | |
System #2
| Gas Chromatography | GC-8AIT | |
|---|---|---|
| Detector | TCD for detection of C1-C5 Paraffins and Isoparaffins, Air, CO2, and C6+ by backflush. | |
| Valve | One automated, air actuated, 10-port valve | |
| Columns | 4 stainless steel columns | |
| Carrier Gas | Helium, (99.999% purity or better) | |
| Requires | PRG-102A, PC-17N | |