Precautions for using natural gas sample collection bags

Precautions for using natural gas sample collection bags

Sampling bag usage method and precautions:

The on-off valve is operated by the valve stem. When the valve stem rotates clockwise to the end, it is closed, and when it rotates counterclockwise to the end, it is open

The upper cap of the type switching valve is the switch of the valve. By rotating the upper cap to open the switch, gas is introduced from the side tube of the valve. After closing the switch, the sampling port of the needle on the cap can be injected for sampling;

Replace the gas bag with sample gas or inert gas before use;

The inflation pressure should not exceed 6000pa; visually observe that the airbag is fully inflated; But pressing with fingers is not very tight.

Operating temperature: Other temperatures range from -30 ℃ to+50 ℃;

When storing and using, keep away from open flames and high temperatures; Do not touch hard objects to avoid puncturing the membrane material;

Various interfaces, instruments, equipment, and devices should be connected using corresponding soft rubber hoses for transition;

Sampling can be done with a needle;

Collect or store corrosive gases, it is recommended to choose full plastic switch valve airbags.

Silicone connecting hoses can be used for gas sample collection.

Double ball is a simple tool used for collecting gas samples.

Market price of natural gas sampling bags: 35 yuan per bag

Precautions for using natural gas sample collection bagsPrecautions for use:

• The on-off valve is operated by the valve stem, which rotates clockwise to the end to close and counterclockwise to the end to open. Note: The on-off valve can only fully open the cargo trap and cannot adjust the flow rate.
• Before use, replace the gas bag with sample gas or inert gas
• The inflation pressure should not exceed 3000PA. The airbag should appear fully inflated, but not very tight when pressed with fingers.

Lateral switch valve airbag
1) The switch valve is operated through the valve cap (the switch valve has
Indicate the direction of opening and closing, clockwise tightening is closed, counterclockwise loosening is open;
2) The valve cap is equipped with a silicone sealing gasket, which can be directly sampled from the airbag with a needle and a sampling port
Located at the top of the valve cap (see schematic diagram).
3) Other straight rod switch valve airbags

Body sampling bag (aluminum foil film)
The aluminum foil composite film sampling bag is made of composite polyethylene aluminum film This sampling bag is particularly suitable for light sensitive sample collection due to its opacity. It uses a multifunctional valve, allowing users to easily complete sampling, sampling, and cleaning.
Sealed with silicone gaskets, it has good airtightness and is suitable for sampling with airtight needles. It can be reused more than 10 times. This sampling bag can be used to collect various relatively weak pure gases, mixed gases, environmental atmospheres, etc.
This type of sampling bag is widely used for gas sampling and storage in petrochemicals, environmental monitoring, etc. It is an ideal substitute for rubber bladder. It is a sampling method that is very suitable for China's national conditions.