Zellweger BAS98ATEX3008X OTB122 | Gas Detector Sensor Head

Specifications

• Detection Principle: Open‑path infrared (IR), non‑contact, poison‑immune
• Target Gases: Methane (CH₄), hydrocarbons (LEL)
• Detection Range: 4–120 m (path length)
• Sensitivity: 0–100% LEL (methane‑calibrated)
• Response Time: T90 < 3 s (fast, no drift)
• Power Supply: 18–32 V DC; Tx ≤13 W, Rx ≤5 W
• Output: 4–20 mA (sink/source selectable); Modbus RS485
• Enclosure: Aluminium/stainless steel, IP66 (weatherproof)
• Temperature Range: −40 °C to +60 °C (T4); −40 °C to +40 °C (T6)
• Approvals: ATEX, IECEx, UL, CSA; BAS98ATEX3008X (BASEEFA)
• Dimensions (W×H×D): ~130 × 70 × 50 mm (sensor head)
• Weight: ~2.5 kg

Key Features

1. Open‑Path IR Design: Covers wide areas; no sampling pumps needed
2. ATEX Certified: For Zone 1/2 explosive atmospheres
3. Fast & Stable: No catalytic bead poisoning; long life (>10 years)
4. Dual Output: 4–20 mA + Modbus for PLC/DCS integration
5. Self‑Diagnostics: Continuous health monitoring; fault LED indication
6. Harsh Environment Ready: IP66, wide temp range, corrosion‑resistant housing

Applications

• Hazardous Area Monitoring: Oil/gas platforms, refineries, chemical plants
• Wide‑Area Coverage: Tanks, pipelines, loading bays, compressor stations
• Continuous Emission Monitoring: Fenceline and perimeter gas leak detection
• Legacy System Replacement: Drop‑in for older Zellweger open‑path detectors