The Bühler Technologies P2.4 AMEX Explosion-Proof Sample Gas Pump is an advanced gas sampling instrument engineered by Bühler Technologies GmbH (Germany)—a recognized global authority in industrial sample gas conditioning systems. Designed and certified to meet ATEX/Ex explosion safety directives, this pump ensures completely safe operation in hazardous classified areas (Zone 1 and Zone 2).

The key distinction of the P2.4 AMEX model lies in combining an AMEX explosion-proof motor 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 materials such as PTFE, PVDF, or 1.4571 (316Ti) Stainless Steel combined with a PTFE-coated diaphragm, the Bühler P2.4 AMEX provides complete resistance against aggressive sample gas components including SO2, SO3, NOx, HCl, HF, H2S, CO, CO2, and flammable organic vapors. Driven by a spark-free Ex motor, it delivers continuous 24/7 duty for demanding process plant environments.

• Manufacturer: Bühler Technologies GmbH
• Product Series / Model: P2.4 AMEX (Explosion-Proof Sample Gas Diaphragm Pump with Bypass Valve)
• Country of Origin: Germany
• Explosion Protection Certification: ATEX certified / Ex protection (suitable for hazardous Zone 1 / Zone 2 areas)
• Operating Principle: 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. 3.6 kg - 6.6 kg (depending on AMEX Ex motor configuration)
• System Compatibility: ATEX/Ex explosion-proof certified, chemically inert gas path, built-in flow control, fully integrable into CEMS cabinets and hazardous area gas analysis panels.