A heated sampling probe is an extraction assembly that draws a sample from a process or flue-gas stream while managing temperature in the relevant sample path.
A heated sampling probe is an extraction assembly that draws a sample from a process or flue-gas stream while managing temperature in the relevant sample path. Its configuration may include a sampling tube, liner, heated section and a filtration arrangement selected for the measurement system. The probe's job differs from a heated sampling line, which transports the sample after extraction. Probe selection must consider the process temperature, sample chemistry, dust conditions, access and analytical method. Heating alone does not establish a representative sample or compliance with a testing method.
Gas conditions, insertion geometry and the measurement method determine the extraction assembly. Coordinate its sample-contact materials, temperature control and outlet connection with the heated line and downstream conditioning equipment.
A heated extraction assembly for a defined flue-gas monitoring arrangement. Specify the insertion tube, process connection and outlet interface together with any filtration and maintenance requirements of the selected sampling method.
Enquire about this configurationUse the sampling-point drawing to establish the effective reach, connection position and clearance needed to remove the assembly.
Discuss tube or liner materials, seals and fittings as a continuous wetted path rather than independent catalogue items.
Define the required role and position of filtration with the analyzer method, including access for its specified maintenance.
Coordinate heated sections and the outlet-to-line connection so the transition matches the temperature strategy of the complete system.
Share these details with your inquiry. Product ratings and operating limits are confirmed for the selected configuration.
| What to specify | Unit / format | Selection guidance |
|---|---|---|
| Process and sample composition | composition / °C | State gas temperature, target analytes, moisture, potentially corrosive components and relevant operating changes. |
| Extraction geometry | mm / drawing | Distinguish effective insertion length from overall length and provide the process connection and access dimensions. |
| Wetted materials | material | Identify requirements for the tube, liner, seals and fittings based on sample compatibility and the analytical method. |
| Dust and filtration | loading / method | Describe particle conditions and the filtration strategy, including whether collected material forms part of the measurement. |
| Pressure and flow | kPa or bar / flow units | Provide process pressure or vacuum and the flow requirements of the downstream sampling system. |
| Heating and control | °C / V | Define the required heated sample-path condition, power supply, temperature feedback and control interface. |
| Outlet transition | connection / drawing | Identify the heated-line interface and any section where heat loss or physical access needs special attention. |
| Service access | clearance / procedure | Provide withdrawal space, platform access and the intended inspection or filter-maintenance arrangement. |
State gas temperature, target analytes, moisture, potentially corrosive components and relevant operating changes.
Distinguish effective insertion length from overall length and provide the process connection and access dimensions.
Identify requirements for the tube, liner, seals and fittings based on sample compatibility and the analytical method.
Describe particle conditions and the filtration strategy, including whether collected material forms part of the measurement.
Provide process pressure or vacuum and the flow requirements of the downstream sampling system.
Define the required heated sample-path condition, power supply, temperature feedback and control interface.
Identify the heated-line interface and any section where heat loss or physical access needs special attention.
Provide withdrawal space, platform access and the intended inspection or filter-maintenance arrangement.
A heated extraction assembly can form the upstream end of a continuous gas-analysis system. Probe position and sample conditions must follow the monitoring system's design requirements.
Probe selection for a process line or vessel depends on gas chemistry, pressure and access. The extraction assembly should be reviewed with the complete analyzer sampling arrangement.
A replacement probe needs more than a matching flange. Compare effective length, wetted path, thermal duty and system connections before considering it equivalent to the original assembly.
Identify what is being measured and how the sample will be conditioned. Establish the requirements for probe position, extraction, filtration and sample-contact materials before selecting hardware.
Document the port, required reach and available withdrawal space. Separate dimensions inside the process from the external enclosure and line-connection dimensions.
Coordinate process exposure, probe heating and the line transition. Agree temperature feedback and readiness requirements with the system designer, including the effect of service or filter access.
Send your application details, drawing and planned quantity. We can review the configuration and the information needed for a quotation.
These references explain heating principles. Confirm the ratings, approvals and operating limits of the proposed VELHEAT configuration in its own documentation.
Primary example showing method-specific probe configurations, liners and effective versus overall length; these options are not asserted as VELHEAT offerings.
