Custom CEMS and Analyzer Sample Lines Tubing Bundles – Thermon

Description

These are highly specialized tubing bundles, often called umbilicals or STACKPAK, that are custom-engineered to transport gas or liquid samples from a process line or stack to an analyzer (like a Continuous Emission Monitoring System, or CEMS). The main purpose is to maintain a precise, consistent temperature to prevent sample condensation, phase change, or component drop-out (keeping the gas above its dew point) which would compromise the accuracy of the analysis. They often combine multiple tubes, heat tracing, and auxiliary components into a single, jacketed assembly.

Features

• Customized Design: Can include a combination of heated sample tubes, non-heated tubes (for blowback or calibration gas), and auxiliary conductors for probe heaters or alarms.
• Precise Temperature Control: Electrically heat traced with options like self-regulating (SX) or power-limiting (HPT) cables to maintain required sample temperatures (often up to 177°C / 350°F or higher).
• Sample Integrity: Available with special internal tube materials and finishes such as Electropolished (EP) or advanced coatings like SilcoNert/Dursan to prevent adsorption/desorption and ensure fast, accurate analyzer response.
• High Temperature Exposure: Bundles are available that are designed to handle high-temperature exposure, such as freeze protection for high-temperature steam samples up to 593°C (1100°F).
• Hazardous Area Approved: Electrical heat tracing components are often approved for use in hazardous (classified) locations (e.g., Class I, Division 1/Zone 1).
• Simplified Installation: Pre-assembled bundles reduce field installation time and cost compared to field-installing and insulating individual components.