... accurate metrological instrument to continuously or instantaneously measure. Flowmeter, oil counter, oil flowmeter The Positive Displacement Flow Meter Excellent stepless adjusting ... alkaline pH liquids -abrasive liquidsNominal diameter (mm): DN15~300Accuracy: ±0.2%,±0.3%,±0.5%Flow range (m3/h): 0.5 ... (oC): -30~50Nominal pressure (Mpa): 1.0, 1.6, 2.5, 4.0, 6.3Medium: low or midst viscosity petroleum ...