The Bühler Technologies P2.2 ATEX-H2/O2 Explosion-Proof Sample Gas Pump is a specialized sampling instrument manufactured by Bühler Technologies GmbH (Germany), engineered specifically for applications extracting sample gas streams that contain potentially explosive mixtures of Hydrogen (H2) and Oxygen (O2). Certified in full compliance with European ATEX safety directives, this pump ensures maximum operational safety in hazardous classified locations (Zone 1 and Zone 2).

The primary technical advantage of the P2.2 ATEX-H2/O2 model lies in its reinforced safety sealing and explosion-proof construction, preventing any gas leakage to the external atmosphere while eliminating ignition risks. The pump reliably transports sample gas from sampling probes through cooling and filtration units to gas analyzers in hydrogen generation plants and CEMS setups.

Constructed from chemically inert, corrosion-resistant materials including PTFE, PVDF, or 1.4571 (316Ti) Stainless Steel combined with a PTFE-coated diaphragm, the pump handles aggressive gas components and organic solvent vapors without degradation. Driven by a spark-free Ex motor for continuous 24/7 duty, the P2.2 ATEX-H2/O2 is the premier choice for hydrogen electrolysis and petrochemical refining gas analysis.

• Manufacturer: Bühler Technologies GmbH
• Product Series / Model: P2.2 ATEX-H2/O2 (Ex-proof Sample Gas Diaphragm Pump for H2/O2 mixtures)
• Country of Origin: Germany
• Special Application: Dedicated safety design for explosive Hydrogen (H2) and Oxygen (O2) gas mixtures
• Explosion Protection Certification: ATEX II 2G Ex h IIC T4/T3 Gb (suitable for Zone 1 and Zone 2)
• Operating Principle: High-Safety Explosion-Proof Electromechanical Diaphragm Pump
• Free Flow Rate: Max approx. 400 Nl/h (approx. 6.6 L/min)
• Max Operating Pressure: Max 1.5 bar - 2.0 bar relative
• Max Vacuum Capacity: Down to 0.3 bar absolute
• Wetted Materials: PTFE, PVDF, Viton (FKM), Stainless Steel 1.4571 (316Ti)
• Diaphragm Material: PTFE-coated EPDM
• Max Inlet Gas Temperature: Up to +70°C / +100°C (depending on head material)
• Ambient Operating Temperature: -20°C to +50°C
• Power Supply Options: 230V AC (50/60 Hz), 115V AC (50/60 Hz), or 24V DC (Ex variant)
• Power Consumption: Approx. 55W to 90W
• Inlet / Outlet Port Connections: G 1/4" or NPT 1/4" female threads
• Protection Class: IP 55 / IP 65
• Net Weight: Approx. 3.8 kg - 6.8 kg (depending on motor configuration)
• System Compatibility: Enhanced safety explosion-proof design for H2/O2, chemically inert gas path, fully integrable into Hydrogen analysis panels and CEMS cabinets in hazardous environments.