The Bühler GAS 222.35-U Heated Gas Sampling Probe is a high-performance industrial sample extraction unit engineered by Bühler Technologies GmbH (Germany). The "-U" (Universal / US specification) designation indicates compliance with universal and North American installation standards, making it ideal for severe operating environments with heavy dust loads and high temperatures in Continuous Emission Monitoring Systems (CEMS) and process gas analysis.

A key technical highlight of the GAS 222.35-U model is its factory-integrated pneumatic blowback valve mounted directly on the probe head assembly. This enables automated, high-pressure backflushing of compressed air to clear accumulated dust particles from the internal filter element (Ceramic or SS316L stainless steel) without requiring external valve manifolds. Automated periodic blowback prevents filter blinding, ensures steady sample gas flow, and significantly lowers routine maintenance overhead.

Additionally, the probe features an integrated self-regulating electric heating element, maintaining a uniform probe temperature up to 200°C (392°F). Continuous heating prevents moisture condensation, acid dew point precipitation, and sample line corrosion, preserving true sample integrity before delivery to downstream analyzers. Combined with a tool-free, quick-release filter cover mechanism (Easy-Lock System), the Bühler GAS 222.35-U delivers reliable 24/7 continuous operation and low ownership costs across power generation, cement, chemical, and petrochemical facilities.

• Manufacturer: Bühler Technologies GmbH
• Country of Origin: Germany
• Product Series: Heated Gas Sampling Probe Series for High Dust Loads with Blowback Valve (Universal Specification)
• Model: GAS 222.35-U
• Heating Temperature: Self-regulating, maintaining a constant temperature up to 200°C (392°F)
• Maximum Inlet Sample Gas Temperature: Up to 600°C (1112°F) (Depending on optional sampling tube selected)
• Blowback Valve: Factory-integrated pneumatic solenoid blowback valve on probe head
• Filter Replacement Mechanism: Tool-free Easy-Lock quick-release cover
• Maximum Operating Pressure: 6 bar (87 psi)
• Ambient Temperature Range: -20°C to +60°C
• Wetted Materials: Stainless Steel 1.4571 (SS316Ti), Ceramic, FKM
• Internal Filter Element: Ceramic or SS316L Stainless Steel, standard pore sizes 2 µm / 5 µm
• Blowback Mechanism: Integrated automated backpurge system for online filter cleaning
• Calibration Connection: Integrated test gas port for system integrity validation
• Mounting Flange: DN65 PN6 or ANSI 3" 150 lbs
• Power Supply: 115V AC or 230V AC, 50/60 Hz
• Ingress Protection Rating: IP55 / IP65 (Outdoor weather-proof design)