July 2012, Vol. 239 No. 7

Features

Cone DP Meter Calibration Issues

The cone meter is a simple and robust generic differential pressure (DP) meter. It has been shown to be remarkably resistant to the effects of both asymmetric and swirling flow. The cone meter is often the meter of choice when there is limited straight pipe length available for a flow meter. Therefore, cone DP meters are becoming increasingly popular gas flow meters. Figure 1 shows a drawing of a cone meter design with a wall cut away to show the cone assembly within the meter body. Flow direction is left to right. The cone DP meter operates according to the same physical principles as other DP meter types. The differential pressure measured across the cone is proportional to t

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