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The WST’s accuracy curve is one of the widest known in the market: the minimum flow rate is 35%-58% below the ISO standard for such meters and the maximum flow rate is 150%-233% above it. The combination of these unique features allows the use of the WST in broader applications and in extreme situations.
Ratios – the ratio between the extreme flow rates (Qmin and Qmax) is:
1:330 for the WST 50mm
1:400 for the WST 80mm
1:375 for the WST 100mm
1:169 for the WST 150mm
1:146 for the WST 200mm
Bearings and materials used in the WST have been proved to ensure durability far beyond the ISO Standard requirement. This feature ensures that the meter can function in extreme conditions where other meters fail to maintain a sufficient level of accuracy.