A240120 - Ground Verification Monitor

Dixon Distributor? 

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0 lb
Break Quantity
Optional Package/Box Quantity
Temperature Range
-40°C to 60°C



  • Tank truck and railcar loading facilities
  • Drum and barrel filling sites
  • Loading of stationary tanks


  • Bright red and green indicators communicate A240 ground monitor status
  • Convenient user terminal blocks make installation easy
  • Environmentally sealed enclosure provides long service life even in outdoor environments
  • Integrates easily into process control systems
  • Provides and verifies ground bond through a single connection


Installation must be completed by a qualified hazardous location technician. A240-Series monitors are suitable for installation in ordinary and specific hazardous locations (listed in technical specifications section) as defined by NEC NFPA70 and IECEx standard 60079. Installation to be performed by a qualified professional.

Safety Notes

  • 1. Verify unit is powered on and idle by the presence of a red indicator light inside of the enclosure.
  • 2. Test the unit’s operation by clamping to a known grounded piece of metal. Verify the A240’s indicator changes from RED to GREEN. Remove the clamp from the test point.
  • 3. Before any other electrical connections are made, secure clamp to the process connection that is to be loaded.
  • 4. Verify the A240 indicator changes from RED to GREEN.
  • 5. Complete any other process connections.
  • 6. Once all other safety measures are active, begin the loading process.
  • 7. Once loading is complete, remove all other process connections, then the A240 last.
  • 8. Return the A240 clamp to the isolated storage facility, verifying the indicator remains red.


  • Ingress protection: IEC 60529 IP 66
  • NEMA rating: NEMA Type 4, 4X, 7, 9
  • Conduit entries: three
  • Suitable for installation in hazardous locations: Class I, Division 1 & 2, Groups B, C, and D hazardous locations, Class II, Division 1 & 2, Groups E, F, and G hazardous locations, and Class III hazardous locations
  • Suitable for connection to hazardous locations: Class I, Division 1 & 2, Groups A, B, C, and D hazardous locations and Class I, Zone 0, 1 & 2, Groups IIC, IIB, and IIA hazardous locations
  • Ground connection threshold: relay is energized when ground clamp connection is less than 10Ω
  • Number of output relays: one
  • Output replay configuration: one set of FORM C contacts (Normally Open, Common, and Normally Closed contacts)
  • Output relay contact rating: 4Amp at 250VAC
  • Temperature range -40°F to 140°F


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