Measurement ports are specialist components that create safe and repeatable access points to the interior of chimneys and flue gas ducts. It is through them that probes used for measuring pressure, temperature and flue gas composition are introduced, which is why the quality of the port directly affects the reliability of the results and the working comfort of measurement teams. The range includes, among others, the standard M64x4 measurement port with an internal thread, available off the shelf, allowing chimneys and technological installations to be quickly equipped with professional measurement points. Measurement ports for industrial chimneys can be manufactured from carbon steel, galvanized steel or stainless steel – the choice of material makes it possible to adapt durability and corrosion resistance to the specific operating conditions of the installation.
Measurement ports for flue gas testing in chimneys are designed to meet applicable standard requirements, including ports for flue gas emission measurements in accordance with PN-Z-04030-7. They are available in versions with or without a flange, with diameters matched to a specific pipe, which facilitates the installation of measurement ports in both new and modernized systems. All products are 100% designed and manufactured at Karnatech’s facilities in Stalowa Wola, ensuring full quality control and the ability to respond quickly to customer needs. For more demanding applications, custom-made measurement ports are also available, manufactured according to an individual design or the user’s guidelines, with precise adaptation to the specific installation and operating conditions.
The role of measurement ports in chimney installations
Measurement ports are key components of any installation in which regular measurements of boiler operating parameters and flue gas exhaust systems are carried out. It is through measurement ports for industrial chimneys that probes and measuring devices are introduced, allowing the determination of pressure, temperature and flue gas composition. The quality of the port’s workmanship affects not only the working comfort of measurement teams, but also the safety of the entire installation and the reliability of the obtained results. A properly designed measurement port minimizes the risk of leakage, ensures stable probe mounting and enables repeated measurements to be carried out at the same location without deteriorating the connection parameters. As a result, the user can be confident that each flue gas test is conducted under controlled conditions, while the chimney retains full operational functionality.
Standard M64x4 measurement port and design variants
The offer includes, among others, the standard M64x4 measurement port with an internal thread, which forms the basis of many measurement solutions used in industry and the energy sector. This size is widely applied, which is why such measurement ports are usually available off the shelf, accelerating the upgrading of existing chimneys and the implementation of new investments. Based on this standard, three main product types are manufactured: carbon steel measurement ports, stainless steel measurement ports and galvanized steel measurement ports. This allows users to select the material according to installation operating conditions, budget and durability and corrosion resistance requirements. A solution based on one proven thread dimension also facilitates later operation, component replacement and compatibility with various types of measurement equipment.
Materials used for measurement ports and their applications
Carbon steel measurement ports represent an economical solution for standard operating conditions, where additional anti-corrosion protection and regular installation inspections can be applied. Galvanized steel measurement ports offer increased corrosion resistance thanks to the zinc coating, making them suitable for typical industrial chimneys, including areas exposed to weather conditions. The highest chemical and thermal resistance is provided by stainless steel measurement ports, dedicated to installations with elevated requirements, where flue gas emission measurements are carried out frequently and a very long service life of the measurement point is expected. The variety of materials makes it possible to select measurement ports not only according to the type of flue gases, but also to the specific service strategy and the planned operational lifetime of the entire installation.
Measurement ports for industrial chimneys and flue gas emission testing
Modern measurement ports for chimneys support not only temperature or pressure measurements, but above all flue gas emission testing conducted in accordance with applicable environmental requirements. Properly designed ports for flue gas emission measurements in accordance with PN-Z-04030-7 enable correct positioning of probes within the duct cross-section, maintaining the required distances from bends or constrictions, as well as safe insertion and removal of measuring equipment. Appropriate selection of material, length and mounting method of the port helps to avoid problems related to condensate, aggressive flue gas components and mechanical damage during operation. As a result, measurement ports for flue gas testing in chimneys become a durable, repeatable reference point on which the entire inspection procedure and reporting of measurement results are based.
Flanged or non-flanged design and installation in systems
Measurement ports can be manufactured in flanged or non-flanged versions, providing great flexibility during installation in existing and new chimneys. The flange is matched to the pipe diameter, allowing measurement ports for industrial chimneys to be integrated into a wide variety of cross-sections and wall thicknesses. The flanged solution facilitates installation and servicing, while non-flanged versions are used where welding is preferred or required by specific structural conditions. Installation of measurement ports in systems should take into account standard recommendations regarding the location of the measurement point, as well as the manufacturer’s requirements concerning tightness and mounting method. A properly installed port ensures safe access to the interior of the duct, while at the same time not deteriorating the hydraulic or structural parameters of the chimney.
Custom-made measurement ports and adaptation to individual projects
In addition to standard solutions, custom-made measurement ports are also available, designed on the basis of individual user guidelines or installation design documentation. This applies to the port length, flange diameter, as well as specific mounting dimensions at the installation site. Such measurement ports for industrial chimneys are particularly useful when modernizing older installations, where non-standard cross-sections are used, installation space is limited or existing openings must be retained. Customized designs can be produced in all three material variants, allowing project requirements to be combined with the expected durability and investment budget. As a result, the measurement port is not a random element, but a precisely matched component of the entire measurement system.
Manufacturing quality and production at Karnatech facilities
All measurement ports offered within this category are 100% designed and manufactured at Karnatech’s facilities in Stalowa Wola. This organization of the process guarantees full control over material selection, manufacturing technology and final product quality, regardless of whether it is a stainless steel measurement port, a carbon steel measurement port or a galvanized measurement port. Production based on proprietary designs and experience in the field of chimney installations makes it possible to respond quickly to market needs, carry out standard production runs and fulfill individual orders for custom-made measurement ports. The user gains confidence that each component meets technical requirements and is prepared for long-term operation in demanding industrial conditions, while the entire measurement installation is based on solid, proven components.