The Model GEF 26 is a gas sampling filter designed for process gas analysis, offering efficient particle filtration with a compact design.

Key Features:

• In-Process Dust Filtration: Equipped with an internal dust filter to effectively remove particulates from gas samples.

• Compact Design: Engineered to occupy minimal space, facilitating easy integration into existing systems.

• Easy Filter Replacement: Utilizes a Tri-Clamp mechanism for quick and straightforward filter element changes.

• Self-Cleaning Capability: Supports back purging for self-cleaning, enhancing maintenance efficiency.

• High-Quality Construction: Manufactured in Germany, ensuring superior craftsmanship and durability.

• Certified Compliance: Comes with a 3.1 material certificate and ATEX 2014/34/EU certification, meeting stringent industry standards.

Technical Specifications:

• Materials:

  • Filter Housing: Stainless steel type 1.4301 (SS304)
  • Seals: FKM (Viton)
  • Filter Elements: PTFE porous or stainless steel mesh 1.4404

• Operating Conditions:

  • Pressure: -0.5 to 6 bar
  • Compressed Air for Back Purging: 1 to 6 bar
  • Gas Flow Rate: 0 to 1000 liters of air per hour
  • Pressure Drop at 200 l air/h: Approximately 10 mbar
  • Dust Loading Capacity: 0 to 10 mg/m³
  • Operating Temperature: -20°C to +150°C

• Physical Dimensions:

  • Housing Volume: 35 ml
  • Effective Filter Area: 70 cm²
  • Gas Connections: ¼" NPT internal thread (¼" G internal thread available upon request)
  • Mounting Clamp Diameter: 135 mm
  • Total Length: 120 mm
  • Filter Element Immersion Depth: 35 mm
  • Dust Deflector Lengths: 65 mm (short), 115 mm (long)

• Installation Options:

  • Weld-In Nozzle: DN 50, DIN 32676, Series B long, diameter 60.5 mm
  • Circular Flange Plate: DN 50 PN 6, stainless steel (1.4301), diameter 60.5 mm; outer diameter 140 mm, bolt circle 110 mm, four holes with 14 mm diameter, material thickness 3 mm

• Explosion Protection Ratings:

  • Gas Explosion Proof: EX II 2G Ex h IIC Gb, -20°C ≤ Ta ≤ +150°C (Attestation EPS 19 ATEX 2 178 U)
  • Dust Explosion Proof: EX II 2D Ex h IIIC Db, -20°C ≤ Ta ≤ +150°C (Attestation EPS 19 ATEX 2 178 U)

Available Filter Elements:

• PTFE Porous Filter Elements:

  • Pore Sizes: 1 μm, 10 μm, 25 μm, 50 μm, 100 μm

• Stainless Steel Mesh Filter Elements (1.4404):

  • Pore Sizes: 1 μm, 10 μm, 25 μm

Optional Accessories:

• Dust Deflector (Stainless Steel 1.4301)
• Adapter for Filter Element Extension (50 mm length)
• Heating Sleeve (Stainless Steel 1.4301) for GEF 26, 230VAC, 200W, PT100 Thermocouple, 300 mm cable length, max temperature 120°C
• Tri-Clamp Gaskets in FKM (Viton) or PTFE

The Model GEF 26 is suitable for use in explosive environments classified as Zone 1, Zone 2, Zone 21, and Zone 22, accommodating explosion classes IIA, IIB, and IIC. It operates without self-heating under normal conditions and is compatible with gases up to temperature class T6.