The Bühler GAS 222.20 AMEX Explosion-Proof Heated Gas Sampling Probe is a high-performance industrial gas extraction system engineered by Bühler Technologies GmbH (Germany). Specially designed and certified for hazardous locations classified under Zone 2 (ATEX / IECEx Zone 2, Class I, Division 2), this probe provides an optimal sampling solution for Continuous Emission Monitoring Systems (CEMS) and process gas analysis in petroleum refineries, natural gas processing facilities, chemical plants, and heavy manufacturing sites.

The probe features an integrated, self-regulating electric heater with explosion-proof certification, maintaining a consistent sampling head temperature up to 200°C (392°F). This continuous heating effectively prevents moisture dew point drop, condensation, and chemical salt precipitation in the gas stream, safeguarding sample gas integrity before reaching downstream analyzers while preventing sample line corrosion and blockage.

Additionally, the GAS 222.20 AMEX incorporates an automated pneumatic blowback (backpurge) system. This enables periodic high-pressure backflushing to automatically clear accumulated particulate matter from the internal Ceramic or SS316L filter element without interrupting continuous process monitoring or requiring manual disassembly. This feature delivers reliable 24/7 operation, extends component lifespan, and significantly lowers maintenance expenses in demanding industrial environments.

• Manufacturer: Bühler Technologies GmbH
• Country of Origin: Germany
• Product Series: Explosion-Proof Heated Gas Sampling Probe (AMEX Zone 2 Series)
• Model: GAS 222.20 AMEX
• Explosion Protection Approval: ATEX Zone 2 / Zone 22, Class I, Division 2 (FM / CSA)
• Heating Temperature: Self-regulating, holding temperature up to 200°C (392°F)
• Maximum Sample Gas Temperature: Up to 600°C (1112°F) (Depending on optional sampling tube selection)
• Ambient Temperature Range: -20°C to +60°C
• Maximum Operating Pressure: 6 bar (87 psi)
• 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 pneumatic backpurge valve for automated filter purging
• Test Gas Connection: Integrated calibration 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: IP65 (Weatherproof construction suitable for outdoor installation)