Silver Instruments publishes guide for high-viscosity oil flow meter selection

Silver Automation Instruments has released a selection guide for measuring heavy oils up to 15,000 cP, comparing Coriolis and oval gear meters for applications where viscosity, temperature and pressure drop matter. The guide is aimed at buyers in industries ranging from oil and gas to food processing.

Why it matters: - High-viscosity oils are harder to measure than water because thickness slows flow, increases pressure drop and changes with temperature. - The guide is aimed at helping buyers choose the right meter for heavy fuel oil, residual oil, crude oil, lubricants and other viscous liquids. - The selection process affects accuracy, pump sizing, maintenance and total cost.

What happened: - Silver Automation Instruments published a guide on high-viscosity oil flow meter selection. - The guide compares Coriolis flow meters and oval gear flow meters for oils up to 15,000 cP. - The company released the comparison for buyers who need guidance on temperature, pipe size and wetted materials.

The details: - Turbine flow meters and orifice plate meters often fail on viscous oils. - The guide points buyers to two meter types that work better: Coriolis flow meters and oval gear flow meters. - Coriolis meters measure mass flow directly and can also report volume flow, density and temperature. - Coriolis accuracy is often within ±0.2%. - Coriolis meters can handle viscosity up to 500,000 cP and beyond. - Coriolis meters do not need straight pipe runs before or after the sensor. - Coriolis meters cost more. - Pressure drop rises as viscosity rises, so pump capacity must be checked. - Strong vibration near the sensor can affect readings. - The Coriolis range includes bent tube sensors up to 12 inches and high-pressure models rated to 1000 bar. - Oval gear meters are positive displacement meters that move a fixed volume with each gear rotation. - Oval gear meters typically deliver ±0.5% accuracy. - Clean liquids below about 2,000 cP are the usual range for oval gear meters. - Mechanical oval gear versions need no external power. - Small oval gear meters suit low-flow viscous oil. - Many oval gear units measure below 1 L/min. - The LC-M micro series measures as low as 0.5 ml/min. - Oval gear meters are not suited to liquids with solids or slurries. - The guide says buyers should check viscosity at the lowest operating temperature, not room temperature. - The guide also says to check whether the oil is clean, the true flow range, the accuracy needed, available pump pressure, acceptable pressure drop and budget.

Between the lines: - The guide frames meter selection around process conditions first, not pipe size first. - That approach favors accuracy and reliability over a one-size-fits-all purchase decision. - The company is also positioning Coriolis and oval gear meters as the practical options for applications where older meter types struggle.

What's next: - Buyers can use the full comparison table and application notes on the high-viscosity flow meter guide. - Silver Automation Instruments invites customers to send the liquid type, viscosity range, temperature, flow range and line size for a recommendation. - The guide is relevant across oil and gas, chemical processing, food and beverage, power generation, pulp and paper and high-temperature processes.

The bottom line: - For viscous oils, the most important sizing inputs are viscosity, temperature and flow range. - Silver Automation Instruments says those three factors should drive the meter choice before pipe size does.