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Coriolis Mass Flow Meter Applications: Multi-Variable Slurry Mass Sizing
Quick Answer: A Coriolis mass flow meter measures slurry mass flow, density, and solids concentration in one device. For multi-variable slurry mass sizing, use a straight-tube or bent-tube Coriolis meter with DN15 to DN150 depending on flow range, pressure, and solids content. Send your pipe size, flow range, solids percentage, and line pressure to Silver Instruments for a product selection.
Slurry measurement is not the same as clean water measurement. The particles settle. The density changes. The pipe wears. That is why volumetric meters often fail in slurry service. A Coriolis mass flow meter reads mass directly. It also outputs density and temperature at the same time.
What Multi-Variable Slurry Mass Sizing Means
Multi-variable sizing means you select a meter based on mass flow rate, line density, solids fraction, pressure, temperature, and pipe size. A standard volumetric meter only gives m3/h. That value is useless when solids content changes. Example: a nickel slurry in Indonesia runs at 52 percent solids by weight. The volumetric flow is 30 m3/h. The mass flow is 44 t/h because the slurry density is 1,470 kg/m3. If you size a pump or a thickener only on m3/h, the mass balance will be wrong.
We have seen this on customer sites many times. An operator sees a stable volumetric reading but the actual solids load has shifted. A Coriolis meter removes that blind spot because it gives live density in g/cm3 and mass flow in kg/h or t/h.
Why Coriolis Meters Work for Slurry Service
The Coriolis principle measures direct mass flow. It does not require pressure compensation or temperature compensation for the flow value. Slurry contains particles that can plug orifice plates and damage turbine blades. A Coriolis meter has a smooth tube path. Straight tube designs handle coarse particles and abrasive service better. Bent tube designs work well for fine slurries with particle sizes below 2 mm.
For a fine calcium carbonate slurry, a bent tube DN40 meter with Hastelloy C22 wetted parts works well. For a coarse silica sand slurry, a single straight tube DN50 meter with no internal crevices is easier to flush. Both designs support multi-variable output from one transmitter.
Sizing a Coriolis Meter for Slurry Mass Flow
Do not pick a meter by line size only. A slurry with 60 percent solids and 15 m3/h may need DN65. A low flow of 1 m3/h with the same solids needs DN25. Pressure drop is also critical. Coriolis meters add pressure loss from the tube geometry. For slurries above 1,500 kg/m3, keep velocity between 1.5 m/s and 4 m/s. That range limits tube wear and keeps solids moving.
Here is a real sizing case. A silica sand slurry in Vietnam had 1,650 kg/m3 density and 25 m3/h flow through DN80 pipe. At 2.2 m/s velocity, the pressure loss was 0.4 bar. We recommended a Silver Instruments DN80 straight tube Coriolis meter with Hastelloy C22. The customer got mass flow and density with one device. They did not need a separate density meter.
Recommended Silver Instruments Models for Slurry
Silver Instruments offers the SI-100C compact and SI-100R remote Coriolis mass flow meters. Wetted parts include 316L stainless steel, Hastelloy C22, and titanium. Accuracy is ±0.2 percent of rate for mass flow and ±0.0005 g/cm3 for density. Process temperature spans -50°C to 200°
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A chemical plant in Indonesia processes 35 percent calcium carbonate slurry in a DN50 line. We supplied an SI-100R DN50 with Hastelloy C22 and 4-20 mA HART. The customer reads mass flow at 18 t/h, density at 1,320 kg/m3, and temperature at 68°C. That data feeds their DCS directly. No separate density meter is installed.
Installation Notes for Slurry Coriolis Meters
Install the meter in a vertical pipe with upward flow for settling slurries. Horizontal installation can allow solids to settle inside the tubes. Keep the pipe full. Avoid air pockets. Use a strainer upstream for large debris. For abrasive slurry, inspect the tube every 12 months. Support the pipe on both sides of the meter to reduce external stress. Zero the meter with clean water when possible, not with slurry.
Output and Integration for Multi-Variable Control
The meter sends mass flow, density, and temperature over one 4-20 mA HART loop or Modbus RTU. Some plants use the density signal to control water addition in real time. Example: a mineral processing plant in Western Australia uses density from a Coriolis meter to trim water flow to a thickener. The meter reads 1,610 kg/m3. A control valve keeps density at 1,600 kg/m3. That saves water and keeps the thickener stable.
How to Request a Quote from Silver Instruments
Send us your slurry type, solids percentage, particle size, pipe size in DN, flow range, pressure in bar, temperature in °C, and signal output. We will recommend a meter model and provide a price. Contact Silver Automation Instruments at Tel: +86-135-1213-1526. Whatsapp: 86-135-12131526. WeChat: +86 13512131526. You can also use the contact form on our website. We reply within 24 hours on business days.
Frequently Asked Questions
Question 1: Can a Coriolis meter measure slurry with large particles?
Answer: Yes, if the particle size stays below one third of the tube inside diameter. For coarse slurry, use a single straight tube meter. State the maximum particle size when you request a quote.
Question 2: What is the typical accuracy for slurry mass flow?
Answer: Silver Instruments Coriolis meters offer ±0.2 percent of rate for mass flow and ±0.0005 g/cm3 for density under stable conditions. Solids fraction accuracy depends on carrier liquid density and particle density.
Question 3: Does slurry density measurement allow solids percent calculation?
Answer: Yes. The meter measures live density. The transmitter calculates solids percent when you enter carrier density and particle density. The output can be 4-20 mA or Modbus.
Question 4: How do I prevent wear in abrasive slurry?
Answer: Keep velocity below 3 m/s for coarse solids. Select Hastelloy C22 or titanium wetted parts. Use a straight tube design. Flush the meter after each batch if possible.
Question 5: Can Silver Instruments supply Coriolis meters for remote sites?
Answer: Yes. We ship to Southeast Asia, Oceania, Latin America, Africa, and Middle East. Remote transmitters work with solar power systems and Modbus RTU.
Silver Instruments supplies multi-variable Coriolis mass flow meters for slurry mass sizing. Tell us your pipe size and flow range. We will size a meter for your application.