Laboratory Tests of Production Meter Instruments.

摘要

This technical note describes a laboratory test on dredge production meters and discusses some of the test results. The note covers the test equipment, material, and procedures used to evaluate instrument performance under controlled conditions of slurry type, concentration, flow, and pipe orientation. Information is provided that aids the dredge operator in the selection and use of production meters. There are several types of flowmeters, for example, electromagnetic, doppler acoustic, and differential pressure, each with its own level of accuracy. The same is true of density measuring devices. Therefore, under identical conditions, a production calculation using doppler flow meter and nuclear density gage values may be very different from calculations made using a bend flow meter and pressure transducer specific gravity U loop values. Production Meter Technology is a work unit designed to evaluate production meter performance with the aim of determining meter accuracy and ranges of best performance. This note summarizes laboratory results which can be used in the selection of production meter equipment for a variety of dredging operations.