Inline Samplers FOR PROCESS PIPELINE SAMPLING

What is an inline sampler?

An inline sampler is a sampling device installed directly into a process pipeline that allows operators to obtain a representative sample of process media without opening equipment or interrupting production.

When should an inline sampler be used?

Inline samplers are commonly used when sampling directly from a vessel is difficult, unsafe, or impractical. They are often installed in process pipelines to monitor incoming raw materials, chemicals being added to a process, or product quality between process steps.

What are the advantages of inline sampling compared to vessel sampling?

Inline sampling can provide easier access to process material, reduce operator exposure, minimize contamination risks, eliminate sample point dead-legs, and allow samples to be collected from a specific point within the process flow rather than directly from a vessel.

Can inline samplers be used on pressurized pipelines?

Yes. All inline sampling systems are designed to operate under pressure and safely obtain representative samples from pipelines without depressurizing the system. 

Can inline samplers be used under vacuum?

Yes. Inline samplers can be designed to operate in applications ranging from full vacuum to pressurized service.  They are rated for vacuum service, but cannot sample under vacuum.

What applications are best suited for inline samplers?

Inline samplers are often used for:

• Sampling incoming raw materials
• Monitoring chemical additions
• Quality control between process steps
• Corrosive chemical processing
• Continuous and semi-batch manufacturing processes
• Hazardous or difficult-to-access sampling locations

Are inline samplers suitable for corrosive chemicals?

Yes. PFA-lined inline samplers are commonly used for highly corrosive chemicals where stainless steel may not provide adequate corrosion resistance.

Can inline samplers be installed in both horizontal and vertical pipelines?

Yes. Inline samplers can typically be configured for either horizontal or vertical piping systems.

How do inline samplers improve operator safety?

Inline samplers allow operators to collect samples in a controlled manner without opening process equipment. Optional safety cabinets, closed dispensing systems, and contained sampling arrangements can further reduce exposure to hazardous materials and fumes.

How do I choose the right inline sampler?

Selection typically depends on:

• Process pressure and temperature
• Chemical compatibility
• Required sample volume
• Level of containment required
• Pipeline size and orientation
• Sampling frequency

What materials of construction are available for inline samplers?

Common options include 316L stainless steel, PFA-lined stainless steel, and other corrosion-resistant materials depending on process requirements.