The Bühler Technologies P2.4 ATEX-H2/O2 Explosion-Proof Sample Gas Pump is a specialized sampling instrument engineered by Bühler Technologies GmbH (Germany), specifically designed 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 environments (Zone 1 and Zone 2).

The key technical advantage of the P2.4 ATEX-H2/O2 model lies in combining an enhanced safety sealing structure to prevent any external leakage with an integrated bypass valve located directly on the Ex pump head. This feature allows operators to easily adjust internal pressure and flow regulation for sensitive gas analyzers without requiring external relief valve assemblies, saving valuable cabinet space in CEMS installations.

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 P2.4 ATEX-H2/O2 is the premier choice for hydrogen production, water electrolysis, and petrochemical refining gas analysis.

• Manufacturer: Bühler Technologies GmbH
• Product Series / Model: P2.4 ATEX-H2/O2 (Ex-proof Sample Gas Diaphragm Pump with Bypass Valve for H2/O2 mixtures)
• Country of Origin: Germany
• Special Application: Dedicated high-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 with integrated bypass
• Free Flow Rate: Max approx. 400 Nl/h (approx. 6.6 L/min)
• Special Feature: Integrated bypass valve for direct Ex pump head flow/pressure regulation
• 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. 3.9 kg - 6.9 kg (depending on motor configuration)
• System Compatibility: Enhanced safety explosion-proof design for H2/O2, chemically inert gas path, built-in flow control, fully integrable into Hydrogen analysis panels and CEMS cabinets in hazardous environments.