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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.
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.
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 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.
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 tell us the zone classification. The more data you send in the first email, the faster we quote. If you send pressure, temperature, flow range, and viscosity we can confirm a model in one working day.
Coriolis meters do not need long straight pipe runs. In many installations zero straight run is acceptable. The meter does need stable support. Vibration from nearby pumps can affect low flow readings. Install pipe supports on both sides and avoid hanging the meter from the pipe. We have seen customer sites where a steam line caused low frequency vibration. The meter error disappeared after adding a rubber pad under the support.
Zero calibration should be done after installation and after any process temperature change above 50 °C. The procedure takes about two minutes on the local display. There are no moving parts. Maintenance is mostly cleaning the tubes if the fluid can coat or foul. For sticky products like latex or chocolate we recommend a flush port option. A Coriolis meter also works with low conductivity liquids. This is a big difference from electromagnetic flow meters which need a conductive liquid. Coriolis meters can measure deionized water, oils, solvents, and hydrocarbons.
Price depends on line size, wetted material, and transmitter type. A DN15 Coriolis meter with 316L stainless steel and 4-20 mA HART starts around USD 3,200. A DN50 meter starts around USD 5,800. Hastelloy C22 wetted parts add about 30 percent. ATEX certification adds about 12 percent and two weeks to the lead time. Standard models ship from Nanjing, China in 2 to 4 weeks. We send by air to Singapore, Dubai, Sydney, Auckland, Santiago, and Lagos. Our support team replies on WhatsApp and WeChat during Asia business hours.
If you need a Coriolis flow meter for a new application send us your fluid name, pressure in bar, temperature in °C, pipe size DN, and flow range in kg/h. We will reply with the model, price, and lead time within 24 hours. You can reach Silver Automation Instruments at flow-meter.com.au or by phone at +86-25-68650347. WhatsApp is +86-25-52155837. WeChat is +86 15365082610.
1. What accuracy can I expect from a Silver Instruments Coriolis meter?
The standard mass flow accuracy is ±0.15 percent of rate. Optional calibration gives ±0.10 percent. Repeatability is ±0.05 percent. For batching and custody transfer this meets common site requirements.
2. Can a Coriolis meter measure both liquids and gases?
Yes. One meter can measure liquid and gas but the calibration may need to be set for the main phase. Many customers use a Coriolis meter for liquid production and gas purging. Tell us the density and flow range for each phase.
3. Do I need straight pipe before a Coriolis flow meter?
No. Coriolis meters do not require the long straight runs used by turbine or vortex meters. You still need proper pipe support to avoid external vibration.
4. What is the minimum flow rate a DN25 Coriolis meter can handle?
A DN25 Silver Instruments Coriolis meter typically reads from about 60 kg/h to 12,000 kg/h. Below 60 kg/h a DN15 meter is a better choice. Send your minimum flow and we will confirm the right size.
5. How do I get a quote for a Coriolis mass flow meter?
Send your fluid name, pressure in bar, temperature in °C, viscosity in cP, pipe size DN, and flow range in kg/h. You can send the details by WhatsApp at +86-25-52155837, by WeChat at +86 15365082610, or by phone at +86-25-68650347. Silver Automation Instruments replies within 24 hours.
