Earth-Rite Tanker Earthing System - PESO Approved

WORKING PRINCIPLE (Tri-mode Technology)

MODE 1 & 2 II With the grounding clamp and cable attached to the designated earth point on the road tanker through its patented circuitry the System detects the presence of the road tanker by its capacitance and not by impedance, resistance or the presence of a diode on the road tanker. At the same time the patented circuitry ensures that it has a connection to the general mass of the earth. This is a critical step as a connection to earth is the only means by which the static electricity can be transferred from the teeth of the clamp on the road tanker to earth thereby mitigating the accumulation of static electricity during the transfer.

MODE 3 II Once Modes 1 and 2 have been completed successfully the patented circuitry monitors the loop resistance from between the teeth of the clamp on the road tanker to the designated general mass of the earth through the System Ground connections. The circuitry will monitor the loop resistance and if it exceeds 10 Ohms it will stop the transfer.

ATTENTION II Driver / operator training is essential for the correct use of the grounding system. The first action in the material transfer process is grounding of the road tanker. The System clamp should be connected directly to the designated earthing point of the road tanker. The grounding clamp should NOT be removed until all other procedures in the material transfer process are complete.

Dry Contacts II The System output contacts can be interlocked with process equipment and/or strobes. Interlocking the grounding system with the process equipment can enhance the Standard Operating Procedures (SOP) before the movement of material can take place. Interlocking with strobes provides personnel with a wider field of view that the grounding SOP is underway. On rare occasions grounding clamps can be removed by operators or lose contact with equipment due to unstable connections being made initially or overstretching of the cable connected to the grounding clamp.

The grounding system, can, via the output contacts, halt the process. However, it should be borne in mind that the movement of the product may not stop even though the equipment (pump / impeller) has halted. This could lead to the continued generation of static charge. In such circumstances it is the responsibility of the site operator to ensure their SOPs cater for such scenarios. This assumes the grounding system has been installed in accordance with the Instruction Manual.