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Coriolis Mass Flow Meters: Ultimate Accuracy Solutions for Demanding Process Liquids

Quick Answer: Silver Automation Instruments supplies Coriolis mass flow meters from DN15 to DN200 with 0.1 to 0.2 percent mass flow accuracy. These meters handle high viscosity, changing density, and entrained gas better than turbine or oval gear meters. Send your pressure in bar, temperature in °C, pipe size in DN, and flow range for a matched model and price.

Why Coriolis Mass Flow Meters Fit Difficult Process Liquids

Most process liquids do not behave like water. Crude oil changes viscosity from one cargo to the next. Paint and resin batches vary from 200 cP to 900 cP. Food syrups stick to pipe walls. Coriolis mass flow meters measure mass directly, not volume. That removes the density correction step. The meter reports kg/h, total mass, density, and temperature in one device.

We have seen this on customer sites many times. A turbine meter reads high when viscosity drops. An oval gear meter wears quickly on abrasive slurry. Coriolis meters have no moving parts in the flow path. The tube vibrates and the sensor detects phase shift caused by mass flow. In practice, repeatability matters more than accuracy in batching. Silver Instruments rates its meters at 0.1 percent of rate for mass flow and 0.2 percent for density. Repeatability is often 0.05 percent of rate. That helps a paint manufacturer in Vietnam hold color batch tolerance without manual weighing.

Where Coriolis Meters Solve Specific Process Problems

A desalination plant in Chile asked for a seawater flow meter for desalination plant feed and brine discharge. The feed line was DN100 and the brine line was DN50. Turbine meters on brine showed drift after scale buildup. We supplied a DN50 Coriolis meter with Super Duplex wetted parts and a DN100 meter with 316L wetted parts. The plant now reads mass flow and density together, which helps detect air pockets in the brine.

In Saudi Arabia a chemical distributor needed a Coriolis meter for solvent loading. The skid builder required ATEX Zone 1 approval because the loading bay has flammable vapors. Silver Instruments supplied an ATEX Zone 1 certified transmitter with 4-20 mA HART output and a DN25 316L sensor. The flow range was 0 to 6,000 kg/h. The operator used the density output to confirm the right solvent was in the line before starting the pump.

Food plants in Thailand often measure palm oil, syrup, and chocolate liquor. A positive displacement meter needs calibration for each product because viscosity changes. Coriolis meters do not need viscosity compensation. One plant replaced oval gear meters on syrup with a DN40 Coriolis meter. The meter runs at 60 °C and the CIP cycle reaches 95 °C without removing the meter.

Recommended Models and Sizing Parameters

Silver Instruments offers the SI-CMF series from DN15 to DN200. For low flow chemical dosing, a DN15 meter covers 0 to 600 kg/h. For mid flow transfer, a DN25 meter covers 0 to 6,000 kg/h and a DN50 meter covers 0 to 40,000 kg/h. For bulk loading, a DN100 meter covers 0 to 120,000 kg/h. DN150 and DN200 sizes are available depending on density and pressure drop.

Every standard model includes a 316L stainless steel sensor, PT100 temperature input, 4-20 mA HART, RS485 Modbus, and pulse output. Optional approvals include ATEX Zone 1, IECEx, and 3-A for food contact. Here is the thing. Most engineers skip this part until after a site test. But confirm flange rating, wetted material, and electrical classification before quoting.

Pressure rating matters because process fluids often reach 40 bar. Standard models handle PN40. For high pressure chemical injection, Silver Instruments can supply PN100 bodies on DN15 and DN25. Standard sensors work from -200 °C to +200 °C. High temperature versions go to +350 °C. Low conductivity is not a problem, even for demineralized water below 5 µS/cm. C