The Bühler GAS 222.20 Ex1 Explosion-Proof Heated Gas Sampling Probe is a high-performance sampling solution engineered by Bühler Technologies GmbH (Germany), designed in strict compliance with international explosion protection standards (ATEX / IECEx Zone 1). It is specifically built for extracting process and flue gas samples in high-risk industrial environments such as petroleum refineries, natural gas processing facilities, chemical plants, tank farms, and Continuous Emission Monitoring Systems (CEMS) in hazardous locations.

Featuring an integrated self-regulating electric heating element with Ex-d/Ex-e protection, the probe maintains a stable operating temperature up to 200°C (T4 rating). This constant heating prevents moisture condensation, dew point drop, and chemical precipitation within the sample stream, ensuring true sample integrity for downstream gas analyzers while preventing line corrosion and blockage.

Additionally, the Bühler GAS 222.20 Ex1 incorporates an automated, Ex-certified pneumatic blowback (backpurge) system. This enables periodic high-pressure backflushing to clear accumulated particulates from the internal Ceramic or SS316L filter element without halting process operations or requiring manual disassembly. This feature delivers uninterrupted 24/7 reliability, extends component service life, and significantly reduces maintenance overhead in harsh operating conditions.

• Manufacturer: Bühler Technologies GmbH
• Country of Origin: Germany
• Product Series: Explosion-Proof Heated Gas Sampling Probe Series
• Model: GAS 222.20 Ex1
• Explosion Protection Rating: ATEX / IECEx Zone 1 (Ex II 2G Ex db eb mb IIC T4 Gb / Zone 21)
• Heating Temperature: Self-regulating up to 200°C max (Temperature Class T4)
• Maximum Sample Gas Temperature: Up to 600°C (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 Ex-certified 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 (Outdoor weather-proof construction)