Mass flowmeters today represent the fastest growing sector in the flow measuring market. The increasing demand covers all sizes but, with the growing acceptance by oil companies of mass flow for the fiscal measurement of hydrocarbon products, focus on the larger meters has assumed particular emphasis.
They provide high-accuracy measurements for bulk fluid transfers and can also compute on-line the net oil, as opposed to the total volume of oil and water, being drawn from production wells. At the other end of the process, the very high flow rates of products being shipped out of the refinery and pumped into power stations needs to be accurately monitored.
Small mass meters have the technical capability to measure these high flow rates, but the length of time taken is uneconomic. Large meters capable of handling flow rates of 10,000 kg/min and higher are therefore coming into their own. Even these, however, are not ideal and and in many power house pumping applications consignments of up to 14 four-inch units are invariably installed to operate in parallel.