Reducing Carrier Gas Consumption
- Measures and Proposals to Reduce Helium Gas Consumption
- Reducing Carrier Gas Consumption
- Changing the Carrier Gas
Reducing Consumption During Analysis (Carrier Gas Saver Mode)
For split analysis, a large split ratio does not need to be maintained after the sample enters the column. The following describes the carrier gas saver mode, which reduces gas consumption by changing the split ratio after the sample enters the column.
Carrier Gas Saver Mode
The carrier gas saver function can be used to reduce the split flowrate at a specified time after analysis starts until the next analysis starts.
Systems equipped standard with the carrier gas saver mode: GCMS-TQ series, GCMS-QP2050/ QP2020/ QP2010series
Reduces the split flowrate from 200 mL to 20 mL one minute after the sample is injected. By also using an auto injector, the split flowrate can be kept at the saver level from after analysis ends until analysis starts the next day. Given the following conditions, the saver mode reduces helium consumption per analysis by about 83 %.
Analysis time: 30 min
Split ratio: 100
Carrier gas saver function: Split ratio of 10 after one minute
[Caution]
Specify a split ratio setting during the carrier gas saver mode that results in a total flowrate of at least 20 mL/min (at least 30 mL/min, if possible).
Reduction in carrier gas consumption during analysis standby and after completion of analysis (ecology mode and shutdown method and gas selector)
Helium gas is still consumed after analysis is complete. When the ecology mode , the shutdown method, or the gas selector is used, the quantity consumed can be reduced.
When the model used is
GCMS-TQ Series, GCMS-QP2050 Series, GCMS-QP2020, GCMS-QP2010 Ultra/SE → 1. Ecology mode
GCMS-QP2010 Plus, PARVUM2(GCMS-QP2010S), GCMS-QP2010 → 2. Shutdown method
1. Ecology Mode (GCMS-TQ Series, GCMS-QP2050 Series, GCMS-QP2020, GCMS-QP2010 Ultra/SE)
The ecology mode is offered as standard with the GCMS-TQ Series, GCMS-QP2050 Series, GCMS-QP2020 and GCMS-QP2010 Ultra/SE models to reduce unnecessary gas and electricity consumption during analysis standby and after continuous analysis is complete.
2. Shutdown Method (GCMS-QP2010 Plus, PARVUM2(GCMS-QP2010S), GCMS-QP2010)
While the GCMS-QP2010 Plus, PARVUM2(GCMS-QP2010S), and GCMS-QP2010 do not offer the ecology mode, a shutdown method can be set to reduce the helium gas consumption in virtually the same way as the ecology mode does.
3. Gas Selector (GCMS-NX Series, GCMS-QP2050 Series)
Reducing Consumption During Analysis (Carrier Gas Saver Mode)
For split analysis, a large split ratio does not need to be maintained after the sample enters the column. The following describes the carrier gas saver mode, which reduces gas consumption by changing the split ratio after the sample enters the column.
The carrier gas saver function can be used to reduce the split flowrate at a specified time after analysis starts until the next analysis starts.
Reduces the split flowrate from 200 mL to 20 mL one minute after the sample is injected. By also using an auto injector, the split flowrate can be kept at the saver level from after analysis ends until analysis starts the next day. Given the following conditions, the saver mode reduces helium consumption per analysis by about 83 %.
Analysis time: 30 min
Split ratio: 100
Carrier gas saver function: Split ratio of 10 after one minute
Reducing Consumption After Analysis (Gas selector)
Gas chromatograph equipped with a gas selector automatically switches to an alternative gas after analysis, significantly reducing helium gas consumption.
The gas selector which can be easily switched from Labsolutions GC is introduced.
The gas selector is applicable to various purposes.
The gas selector can be seamlessly controlled by LabSolutions for a wide range of applications. By selecting the most convenient operation method according to the situation of the laboratory, the He usage can be saved without stress.
Reduction effect by the combined use of carrier gas save mode and gas selector
Analysis time: 30 min
Split ratio: 100
Carrier gas saver function: Split ratio of 10 after one minute
The combination of gas selector and carrier gas saving function has reduced helium consumption by approximately 90%.
With the split/splitless sample injection method, the carrier gas saving function can reduce the amount of carrier gas released beyond the system from the split flow lines after transfer of the samples to the column during analysis.
Additionally, by using an optional gas selector, He can be switched to an alternative gas such as N2 when providing gas to the units outside of analysis times. The gas can be saved when used in combination with the carrier gas saver function, or even with the total volume injection method where the carrier gas saver function cannot be used. Control is integrated with LabSolutions, enabling gas switching to be configured seamlessly.
ECO Simulation Calculates the Savings
The actual helium gas savings will differ according to the operation environment (analysis conditions) used by the customer. ECO Simulation can be used to calculate the effects of the ecology mode. It accurately determines the results achieved by the ecology mode in a customer's laboratory based on specified conditions.
