Earth-Rite® ll PLUS Static Earthing System

Static Earthing Indicator and Interlock System for Hazardous Areas.

The Earth-Rite® II PLUS is a globally certified static earthing system that ensures a continuously monitored low-resistance connection (<10 Ω) between conductive equipment and a verified ground. Designed to mitigate ignition risks due to static discharge, it provides precision monitoring, status indication and interlock capability for operations involving railcars, IBCs, drums, skids and other containers in hazardous zones. The system features a bright pulsing green LED display to inform operators of grounding status and supports interlocking with control or transfer systems through dual changeover relay contacts.

Key Features

Continuous ground loop monitoring to verify <10 Ω resistance
Bright green LED indicator for operator assurance
Dual volt-free changeover relay contacts for interlock integration
Available in Ex d / XP or static dissipative GRP enclosures
Wide voltage support: 115/230 V AC or 12/24 V DC
Simple installation with multiple cable gland entries
Ingress Protection: IP66
Certified for ATEX, IECEx, NEC/CEC (Zones 0, 1, 2, 20, 21, 22)

Applications

Grounding of railcars and tankers during liquid transfer
Safe earthing of IBCs, drums, totes and containers
Static protection for LACT skids, mixing and blending stations
Process interlocks requiring automatic shutdown if resistance >10 Ω

Technical Highlights

Monitoring Circuit: Intrinsically safe, resistance check ≤10 Ω ±10%
Relay Outputs: 2x changeover contacts (250 V AC 5 A / 30 V DC 2 A)
LED Indication: 3x pulsing green (grounded), 1x red (not grounded)
Enclosure Options: Ex d (Aluminium), GRP (carbon loaded, IP66)
Ambient Temp: -40 °C to +55 °C (ATEX / IECEx rated)
Cable: 3 m to 15 m Cen-Stat spiral cable, Hytrel coated, dual core
Clamp: Stainless steel, dual tungsten carbide teeth, 2-pole
Certifications: ATEX, IECEx, NEC 500/505/CEC, SIL 2
Weight: Monitoring Unit ~4.5 kg; Power Supply ~2.0 kg

System Options

Retractable Cable Reel: Self-retracting Hytrel-coated cable, ATEX Zone 1/21 rated
Sun Shield: Stainless steel shade for indicator visibility in direct sunlight
Universal Resistance Tester (URT): Resistance test tool for system checks
Ex Strobe Light: Visual process indication, ATEX/IECEx approved
S Switching PCB: Direct interface for intrinsically safe circuits
2-Pole Surface Mount Connector: Dedicated monitored earthing point for mobile systems

Ideal For

Operators handling flammable or explosive materials
Facilities requiring certified grounding verification and shutdown logic
Compliance with IEC TS 60079-32, NFPA 77, API RP 2003
Versatile installation in Zones 0, 1, 2, 20, 21, 22

Downloads

Earth-Rite II PLUS

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