SITRANS Flowmeter Sensing Plates The sensing plate transfers the impact force to the sensing head of the flowmeter. Version: WF340, 40 t/h Plate Size: 16″ x 16″ (406.4 x 406.4 mm), for WF340, 40 t/h with 5 x 12″ (127 x 304.8 mm) flowguide Plate Material: 304 (1.4301) stainless steel Plate Liner: no liner .