The VC3500 family of load cells and weighing modules is available in capacities from 2000kg to 200,000kg. They are especially suitable for high capacity silo and vessel weighing, with a combined error specification of < +/- 0.03%.
The VC3500 double ended shear beam load cell, with integral weighing module, is designed particularly for large silos and tanks. It incorporates lift-off prevention and (on capacities up to 75t) holding bolts to assist with routine maintenance. The VC3500 is also available with intrinsically safe ATEX and IECEx certification, as well as a high temperature variant for use up to +150 degrees C. The mechanical characteristics of the weighing module are designed according to the Eurocode 3 standard.
End use industries include cement, minerals, chemicals, plastics, pharmaceuticals, paint, food, biomass and offshore weighing applications. More than 4000 high capacity VC3500 load cells have been supplied for drilling mud weighing systems in the oil & gas industry over the last 5 years.
The critical sensor element is a fully welded double ended shear beam, manufactured from high tensile 17-4 PH stainless steel, which is heat treated to give a high ultimate tensile strength. This treatment provides an extremely stable platform for the strain gauges, resulting in excellent accuracy and repeatability. In common with all Thames Side load cells, every single strain gauged load cell element is temperature compensated in our factory to ensure that the high accuracy is maintained across a wide temperature range.
Stainless steel diaphragms are TIG welded in position to provide total environmental sealing to IP68 / IP69K. This method of construction, together with the fitting of a high quality cable gland, allows Thames Side to offer a 5 year warranty on the complete unit. The high durability Polyurethane load cell cable is halogen free and extremely resistant to UV radiation, chemicals and oil drilling muds.
The weighing module assembly has a tough, durable, paint finish as standard, to provide a high level of protection. Stainless steel or galvanised modules are also available as options.
The bi-directional freedom of movement of the top plate allows for a high degree of mis-alignment in the vessel support structure, which is particularly important in large structures where dimensional accuracy, rigidity and angular conformity cannot be guaranteed, or where large changes in ambient temperature are anticipated. The complete weighing module incorporates lift off protection, reducing the need for additional restraint rods in many cases. Integrated holding bolts on capacities up to 75t facilitate routine maintenance. This eliminates the need for expensive installation work, giving a very cost-effective total solution.
Due to the unique design of the VC3500 transverse and non-axial mis-alignment errors are minimised.