Going with the flow
4 Aug 2005
Emerson's Rosemount 3051S Ultra for Flow can support up to 14:1 flow turndown with better than a 0.5% of reading accuracy.
Whereas traditional orifice-based DP flowmeters have only been able to maintain accuracy over a narrow 3:1 operating window, Emerson's Rosemount 3051S can support up to 14:1 flow turndown with better than a 0.5% of reading accuracy.
Performance with the 3051S is specified as a percent of reading, instead of the traditional percent of span. This method of specification eliminates the performance degradation inherent in the nonlinear relationship between flow and differential pressure.
Because a 10:1 flow turndown results in a 100:1 DP turndown, a DP pressure transmitter specified as 0.075% of span will only be 7.5% accurate over the entire flow range.
The hermetic, all-welded housing enables the performance to be maintained in the harshest environments.
