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. Coriolis meters do not need conductivity like electromagnetic flow meters. They suit demineralized water, oils, and solvents.

What Buyers Often Miss

Customers in Southeast Asia, the Middle East, Africa, Latin America, and Oceania buy Coriolis meters for two reasons. They need custody transfer or batch accuracy. A fuel distributor in Indonesia uses a DN50 meter on diesel loading. A mining contractor in Peru uses a DN25 meter on flocculant dosing. A food plant in Australia uses a DN40 meter for milk concentrate. Most are 10 to 100 person SMEs with one or two skids.

Buyers often miss the zero point calibration after installation. A Coriolis meter must be installed without pipe stress. The pipes should be supported on both sides. Air or gas in the liquid causes measurement error. Install the meter so it stays full. In vertical lines with upward flow, this is easier. In horizontal lines, mount the meter in the lower section of the pipe.

Because Coriolis meters measure mass, you do not need temperature compensation for mass flow. But you do need accurate density calibration if you use density as a product check. For high viscosity products above 500 cP, specify the viscosity range when ordering. Silver Instruments tests each meter on a calibration rig and supplies a certificate with the serial number.

How to Specify a Coriolis Mass Flow Meter Without Overpaying

Start with three numbers. Pipe size DN, normal flow in kg/h or t/h, and maximum pressure in bar. Then add temperature, viscosity, and hazardous area requirement. Do not start with accuracy alone. A 0.1 percent meter may be overkill for inventory tracking. A 0.5 percent oval gear meter may be cheaper for clean diesel. But if the product has gas bubbles, high viscosity, or changing density, the Coriolis meter saves maintenance and rework.

Most engineers need a flow computer or batch controller. Silver Instruments transmitters integrate with PLC and DCS through 4-20 mA HART or Modbus. Pulse output supports batch totalizing. Density output can trigger alarms for wrong product detection. A water treatment plant in the Philippines needed a DN15 meter for sodium hypochlorite and citric acid at 300 kg/h and 6 bar. We quoted a DN15 Coriolis meter with Hastelloy C22 wetted parts. The customer installed the meter in 2 days because the transmitter had built in diagnostics.

FAQ: Five Coriolis Mass Flow Meter Questions

Q: What accuracy can I expect from a Coriolis mass flow meter?

A: Standard Silver Instruments models achieve 0.1 to 0.2 percent of rate for mass flow and 0.2 percent for density. Repeatability is often 0.05 percent of rate. This beats most turbine, oval gear, and ultrasonic meters for difficult liquids.

Q: Which pipe sizes and flow ranges do you supply?

A: We supply DN15 to DN200. A DN15 meter covers 0 to 600 kg/h. A DN50 meter covers 0 to 40,000 kg/h. A DN100 meter covers 0 to 120,000 kg/h. Larger sizes are available depending on density and pressure drop.

Q: Can Coriolis meters handle high viscosity and high temperature?

A: Yes. High viscosity does not require compensation. Standard sensors work from -200 °C to +200 °C. High temperature versions go to +350 °C. Specify viscosity above 500 cP at the quotation stage.

Q: What output signals and hazardous area approvals are available?

A: Standard outputs are 4-20 mA HART, RS485 Modbus, and pulse. Optional approvals include ATEX Zone 1 and IECEx for gas and dust. Food grade models can be supplied with 3-A certificates.

Q: How do I get a price or quotation for my process?

A: Send your pressure in bar, temperature in °C, pipe size in DN, and flow range in kg/h or t/h. Also mention viscosity, wetted material, and hazardous area classification. Use the contact numbers below and include those four process values.

Need a selection table for your process? Silver Automation Instruments is a Coriolis mass flow meter manufacturer and supplier. Send your pressure in bar, temperature in °C, pipe size in DN, and flow range. Contact Silver Automation Instruments at Tel: +86-25-68650347, Whatsapp: +86-25-52155837, or WeChat: +86 15365082610. Product data is published on flow-meter.com.au.

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