Product Catalog
Closed Gas Sampler
The fully enclosed Gas Closed Sampler collects flammable, explosive, toxic and corrosive gas from process pipes and vessels with zero leakage. Samples are isolated from air throughout sampling to protect operators and the environment, meeting environmental and explosion-proof codes.
- Parameters
- Drawing
- Application areas
Working Principle
The device adopts closed-loop circulation and purging modes. Connect the seamless pressure-resistant stainless steel sampling cylinder to the process pipeline. First circulate and replace residual gas inside the pipeline, then conduct fully enclosed sampling. After sampling, the pipeline can be purged with nitrogen to avoid discharge of residual gas.
Structural Composition
Cabinet：Made of 304 or 316 stainless steel, available in cabinet type or panel type, with protection and explosion-proof performance.
Core Components：Sampling cylinder (300mL / 500mL, seamless spin forming), needle valve, quick coupling, pressure gauge, thermometer, filter, vent / purge port, cooling or heating module (optional).
Applicable Standards
GB/T 6681-2003, General Rules for Sampling of Gaseous Chemical Products
SH/T 0233-1992, Sampling Method for Liquefied Petroleum Gas
Main Features
Eliminate risks of medium volatilization, leakage and direct contact with operators.
Safe & Fully Enclosed: Zero leakage throughout the whole process, suitable for toxic, hazardous, flammable and explosive gases.
Authentic Sample Quality: Circulation purging and replacement prevent residual contamination of samples.
Easy Operation: Quick-change couplings fitted on both ends of the sampling cylinder enable fast cylinder mounting and dismounting.
Wide Adaptability: Works under a broad range of temperature and pressure conditions. Optional accessories include cooling/heating modules, booster pumps (for insufficient pressure differential) and pressure reducing valves (for high-pressure working conditions).
Structure & Connection Parameters
Process inlet and outlet connections: DN15 / DN20 / DN25, available with flanges complying with GB, HG, ANSI, DIN, GOST standards or ferrule fitting connections.
Purge connection: N3 (for 0.4～0.6 MPa nitrogen or compressed air supply).
Discharge connection: Vent / flare connection (optional).
Parameter
| Parameter Item | Standard Value |
|---|---|
| Applicable Medium | Gas, liquefied gas, gas-liquid mixture (especially suitable for flammable, explosive, toxic and highly corrosive media) |
| Design Pressure | 0 ~ 20.0 MPa (Inlet-outlet pressure differential ≥0.01 MPa; booster pump to be equipped if insufficient) |
| Sampling Temperature | -20 ~ 450°C (Cooler matched for high temperature, heater matched for low temperature) |
| Sampling Volume | 50/100/150/300/500/1000mL (Common sizes: 300/500mL) |
| Cabinet Material | 304 stainless steel, 316L stainless steel |
| Sampling Cylinder Material | 304 / 316L stainless steel (Seamless spin forming, weld-free, inner wall polished) |
| All data above are for reference only. Please contact us for detailed parameters. | |
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