... ,diesel etc. flow rate means Positive Displacement Roots Flowmeter Flow meter,Oil Counter for oil,petroleum,chemical,fuel ... meansure. Market service: flow metrology and custody transfer for fluid in oil, petrochemical, electric power, traffic, machinery lubricant, ... reset pointer and totalizer.Medium: petroleum and chemical productsOutput: pulse, 4~20mA analogue signalFlow conversion coefficient: 0.1L/P ...