ABB AquaProbe FEA100 User Manual

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ABB AquaProbe FEA100 User Manual Manual pdf 24 page image

AquaProbe FEA100 / FEA200Electromagnetic flowmeter – insertion-type flow sensors 5 Setting Up22 OI/FEA100/200–EN Rev. D5 Setting Up5.1 IntroductionThe basic equation for volume measurement using the flow sensor is:The profile factor and insertion factor must be determined as detailed in Section 5.2 to 5.3, page 23 asapplicable. The pipe diameter must be accurately determined, see Appendix B, page 31 page for use ofgauge.5.2 Centre Line Method1. Determine the internal diameter D of the pipe, in millimeters, by the most accurate method available.2. Determine the profile factor Fp from Fig.5.1.3. Calculate the insertion factorExample – for a pipe of internal diameter 593 mm (23.35 in.):F p = 0.861 (derived from Fig. 5.1)F i = 1.021Q = A F i F P VWhere: Q = flow rateF i = insertion factorF p = profile factorV = velocityA = areaNote. Due to software configuration, all calculations are in metric units. Therefore if using an imperialpipe, the diameter MUST be converted into millimeters (1 in. = 25.4 mm, for example, a 36 in. pipe =914 mm).Fig. 5.1 Profile Factor vs Velocity for Pipe Sizes 200 to 2000 mm (8 in to 80 in.)F i11 38 D  –-------------------------------------=F i11 38 593  –-------------------------------------------=Pipe Bore in InchesPipe Bore in mmProfile Factor (Fp) 8 16 24 32 40 48 56 64 72 80200 400 600 800 1000 1200 1400 1600 1800 20000.8750.8700.8650.8600.8550.850