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SEDM
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Shaft Earth Device Monitor Model S4600-SEDM-001 l Measures the electrical potential between the propellor shaft and the hull l Provides a constant display of shaft potential - confirms that the bonding equipment is sucessfully maintaining this at a level not exceeding the value of 50 mV l Uses high silver composition brushes running on a silver track - provides effective and sustained low conductivity necessary to ensure that the shaft bonding and its connections maintains a contact resistance no greater than 0.001 Ohms l Combines earthing and monitoring in one installation

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Shaft Earth Device Monitor Introduction When steel is immersed in water (eg a ship’s hull), small galvanic currents are initiated at anodic areas of the metal surface, causing corrosion. Such corrosion predominates at the stern of the ship, where the combined effects of increased turbulence and differential metals results in accelerated corrosion rates. Cathodic protection effectively suppresses these corrosion cells by applying an opposing current from external anodes. If the propellor is to benefit from Cathodic protection then there must be a continuous electrical circuit between the...

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Shaft Earth Device Monitor Dimensions Slipring Spindle distance table to determine dimension (Ba) between centre of brush spindle and slipring surface Item Description Cu/Ag Slipring - matched halves to suit SS Tension band - length to suit dia. Spindle distance - Ba Item 4 & 5 Bonding brush holder - brass Bonding brush holder spindle - SS Insulated brush holder spindle Monitoring brush holder - brass

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Europe, Middle East and Africa AMOT Western Way Bury St Edmunds Suffolk, IP33 3SZ England AMOT USA 8824 Fallbrook Dr Houston, TX 77064 USA Asia and Australasia AMOT Shanghai Rm 4102 - 4104 Unitd Plaza 1468 Nanjing Road West Shanghai 200040 China Tel +86 (0) 21 6279 7700 Fax +86 (0) 21 5237 8560 Email shanghai@amot.com AMOT Singapore 10 Eunos Road 8 #12-06 Singapore Post Centre Singapore 408600 Tel +65 6408 6265 Fax +65 6293 3307 Email singapore@amot.com

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SEDM 4Pages

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SEDM
4Pages