The STAHL 8901/31(0)-280/100/00 intrinsic safety barrier is engineered to protect instrumentation and field wiring installed in hazardous zones by restricting electrical energy to safe, non-ignitive levels. Designed for integration into control panels and analyzer shelters, the barrier enables secure signal transfer between hazardous and safe areas while maintaining compliance with industrial explosion-protection standards.

This device offers stable, low-noise signal conditioning and galvanic isolation for transmitters, contacts, and sensor interfaces. STAHL’s robust internal circuitry ensures dependable operation under industrial vibration, temperature fluctuation, and electromagnetic exposure.

Referenced commonly in Zenner-branded measurement loops, this barrier supports accurate feedback transmission while preventing ignition hazards in gas and vapor-classified environments.

✅ Key Specifications

• Manufacturer: STAHL

• Model: 8901/31(0)-280/100/00

• Function: Intrinsic safety (IS) interface barrier

• Device Type: Energy-limiting protection module

• Application: Field signal isolation for hazardous areas

• Signal Support: Transmitters, sensors, dry contacts (circuit dependent)

• Mounting: DIN-rail cabinet installation

• Reference: Zenner instrument compatibility

(Note: electrical entity parameters must be confirmed per loop and hazardous-area classification drawing.)

🧪 Typical Applications

• Pressure, flow, and level transmitters

• Hazardous-area contact inputs

• Gas analyzer feedback loops

• Fire and gas safety interfaces

• Tank gauging I/O signals

• Field instrumentation protection

💡 Benefits

• Prevents ignition from wiring faults or surges

• Stable, low-noise signal transfer to control systems

• Compact DIN-rail footprint for panel assembly

• Complies with global IS safety standards

• Long service life and low maintenance demand