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Earth-Rite® II PLUS Static Grounding Indicator and Interlock System

Brand: Newson Gale
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The Earth-Rite II PLUS is designed to ground railcars, LACT units, skids and IBCs during loading and unloading operations in order to dissipate any static electricity.

Isolated conductive metal objects that come into contact with electrostatically charged liquids can accumulate high levels of electrostatic charge.

If an ungrounded object is allowed to accumulate electrostatic charges, the voltage present on the object rises dramatically in a very short space of time. Because the object is at a high voltage, it is seeking to find ways of discharging this excess energy and the most efficient way of doing this is to discharge the excess charge in the form of a spark.

Grounded objects that are in close proximity to charged objects are potential targets for electrostatic discharges.

If the transfer system is not grounded, the electrostatic voltage of objects like railcars can build up to hazardous levels in a short time period.

Features
  • High Intensity Flashing Green LEDs:  Three attention grabbing green LEDS confirms resistance between the teeth of the clamp and the verified earth is 10 Ohms (or less)
  • Monitors the Ground Loop: Monitors the resistance of the ground loop from the grounded object through to the site’s verified true earth grounding point
  • Interlock Capabilities: Two dry output contacts which can be interlocked to electromechanical devices or PLC systems, to stop the flow of product should the system detect a risk of static charge accumulation

The Earth-Rite II PLUS is designed to ground railcars, LACT units, skids and IBCs during loading and unloading operations in order to dissipate any static electricity.

Isolated conductive metal objects that come into contact with electrostatically charged liquids can accumulate high levels of electrostatic charge.

If an ungrounded object is allowed to accumulate electrostatic charges, the voltage present on the object rises dramatically in a very short space of time. Because the object is at a high voltage, it is seeking to find ways of discharging this excess energy and the most efficient way of doing this is to discharge the excess charge in the form of a spark.

Grounded objects that are in close proximity to charged objects are potential targets for electrostatic discharges.

If the transfer system is not grounded, the electrostatic voltage of objects like railcars can build up to hazardous levels in a short time period.

Features
  • High Intensity Flashing Green LEDs:  Three attention grabbing green LEDS confirms resistance between the teeth of the clamp and the verified earth is 10 Ohms (or less)
  • Monitors the Ground Loop: Monitors the resistance of the ground loop from the grounded object through to the site’s verified true earth grounding point
  • Interlock Capabilities: Two dry output contacts which can be interlocked to electromechanical devices or PLC systems, to stop the flow of product should the system detect a risk of static charge accumulation
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Specifications

Brand

Power Supply

  • 115 or 230 Vac, 50-60 Hz
  • 12 or 24 Vdc

Power Rating

  • 10 watts

Ambient Temperature Range

  • -40° to +122° F (-40° to +50° C)
  • -13° to +131° F (-25° to +55° C) for single unit installation in Div.2 hazardous locations

Ingress Protection

  • Type 4X (IP 66)

Weight

  • 9.9 lbs (4.5 kg) nett
  • 4.4 lbs (2 kg) nett for single unit installation in Div.2 hazardous locations

Construction

  • Monitoring unit: Copper-free cast aluminium or carbon-loaded GRP
  • Junction Box Enclosure material: GRP with carbon loading
  • Grounding Clamp - Body: stainless steel (SS grade: 304)

Monitoring Circuit

  • Intrinsically safe

Monitoring Loop Resistance

  • Nominally ≤10 Ohm (±10%)

Output Relay Contact Rating

  • 2 off dry contacts
  • 250 Vac 5 A 500 VA max resistive
  • 30 Vdc 2 A 60 W max resistive

Cable Entries

  • Monitoring unit: 7 x 3/4” NPT (supplied with 4 stopper plugs) or 7 x M20 (2 x plugged)
  • Junction Box: 1 x M20

Junction Box Terminal

  • 2 x AWG #14 conductor capacity

Stowage Device

  • Insulated universal stowage pin

Clamp Cable Connection

  • Quick Connect

Grounding Clamp Design

  • 2 pole with tungsten carbide teeth

Approvals & Certifications

  • Ex II 1 GD T6 (Assessed to EN 13463-1 : 2009)
  • ATEX certificate number: Sira 02ATEX9381
  • FM Certificate of Compliance number: 3046346
  • IECEx: Ex h IIC T6 Ga; Ex h IIIC T85°C Da; Ta = -40°C to +60°C; IECEx EXV 20.0033
  • NEC 500 / CEC (Class & Division), NEC 505 & 506 (Class & Zoning) & CEC Section 18 (Class & Zoning)
  • EMC Tested to EN 61000-6-3, EN 61000-6-2, FCC - Part 15 (Class B)
  • SIL 2 (in accordance with IEC/EN 61508)

Spiral Cable

  • Blue Cen-Stat Hytrel sheath (Static dissipative, chemical & abrasion resistant)
  • Conductors: 2 x AWG #18 copper
  • Length: 3 m (10 ft), 5 m (16 ft), 10 m (32 ft) or 15 m (50 ft) 2 pole Cen-Stat blue spiral cable with Hytrel coating which has colour, UV protective and static dissipative additives
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