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Coriolis Technology: The Industry Standard for Maximum Fluid Measurement Accuracy

Quick Answer: Silver Instruments Coriolis mass flow meters measure mass flow, density, and temperature in one device. They are the industry standard for batching, blending, and custody transfer where mass accuracy below 0.2 percent is required. Send your fluid, pressure, temperature, pipe size, and flow range to get a model and price within 24 hours.

Why Coriolis Technology Delivers Maximum Accuracy

A Coriolis meter uses two vibrating tubes. Fluid passes through the tubes. The tubes twist. The phase shift gives a direct mass flow signal in kg/h. The frequency gives density in g/cm3. A PT100 sensor gives temperature in °C. One meter replaces three or four separate instruments. That reduces installation points and leak paths.

For a typical Silver Instruments Coriolis meter the mass flow accuracy is ±0.15 percent of rate. Repeatability is ±0.05 percent. Density accuracy is ±0.0005 g/cm3. This is enough for custody transfer of diesel, palm oil, chemical feedstock, and LPG. In practice most engineers look at repeatability. Repeatability is what matters in a batching line. A paint plant in Vietnam reduced batch variation from 1.8 percent to 0.2 percent after switching from a turbine meter to a DN25 Coriolis meter. The meter reads mass directly so it handles fluids with changing viscosity. A volumetric meter drifts when honey warms up from 25 °C to 40 °C. A Coriolis meter reports the same kg/h as long as the tube remains full.

Where Coriolis Meters Solve Real Process Problems

We see Coriolis meters in many plants across Southeast Asia, the Middle East, and Australia. One customer in Indonesia measures 2,500 kg/h of palm oil with a DN40 meter. In a Dubai desalination plant a DN15 meter doses antiscalant at 5 L/h. A marine services company in Singapore uses a DN80 meter for bunker fuel transfer at 30,000 kg/h. Food and beverage sites use the same technology for glucose, syrup, and milk concentrate. The meter handles viscosities from 1 cP to 5,000 cP. For high viscosity molasses above 10,000 cP Silver Instruments offers a bent tube option with a larger bore. In every case you get mass flow without a separate density meter or flow computer.

Silver Instruments Coriolis Flow Meter Range and Key Specs

Silver Instruments offers the S-CMF series in sizes from DN10 to DN250. Standard wetted parts are 316L stainless steel. Hastelloy C22 is optional for acids and seawater. Process connections include ANSI B16.5 flanges, EN 1092 flanges, tri-clamp, and threaded connections. Operating temperature range is -50 °C to +200 °C. Pressure rating is up to 100 bar depending on the flange.

The transmitter outputs 4-20 mA HART, pulse, and RS485 Modbus. ATEX Zone 1 and Zone 2 approvals are available. The housing is IP67 rated. A typical DN25 meter covers 0 to 12,000 kg/h. A DN50 meter covers 0 to 60,000 kg/h. Turndown ratio is 20:1 or better. A low pressure drop version is available for gas measurement. Some customers use the same meter for liquid and gas phases during start up and shut down. This is common in LNG pilot plants and CO2 injection skids.

How to Select a Coriolis Meter for Your Process

Do not start with line size only. Start with the mass flow range in kg/h. State the normal flow, minimum flow, and maximum flow. Silver Instruments application engineers check pressure drop and tube velocity. A meter that is too large loses low flow accuracy. A meter that is too small creates high pressure drop. Most engineers skip this part. That is why we ask for all three flow values.

Next send the viscosity in cP, density in kg/m3 or g/cm3, and temperature in °C. For liquids with entrained gas above 2 percent by volume a Coriolis meter may still work but the accuracy drops. In those lines we add an air release vessel upstream. For hazardous areas