1. SU Puresonic flowmeter
  2. Performance

Excellent accuracy and repeatability with the SU ultrasonic flow meter

The SU Puresonic ultrasonic flow meter from ifm is a reliable flowmeter for multiple media types

Explore detailed tables breaking down the accuracy and repeatability at various flow rates for: 

Accuracy and reliability calculation examples

Most of ifm’s flow meters use a two-part accuracy calculation, based on the measured flow rate (MW) and full range of the meter (MEW). For example, accuracy of the SU8621 (MEW = 63.40 gpm) is specified as:

± (1 % MW + 0.5% MEW)
             For MW = 50 gpm, accuracy = ± (0.01*50 + 0.005*63.40) = +/- 0.817 gpm

The repeatability calculation is consistent over the entire flow measuring range of the unit. For example, repeatability of the SU8621 (MEW = 63.40) is specified as:

± (0.2% MEW)
repeatability = +/- (0.002*63.40) = +/- 0.1268 gpm