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Cc/Min Flow Meter Technology & Application Guide
Quick Answer: A cc/min flow meter handles ultra-low liquid or gas flows, typically below 100 cc per minute. For dosing, catalyst injection, or fragrance addition, a Coriolis mass flow meter delivers direct mass measurement with plus minus 0.2 percent accuracy even at 1 cc/min. Silver Automation Instruments supplies micro Coriolis meters from 0.1 cc/min up to 200 kg/h, complete with Hastelloy C22 options and 4-20 mA HART output.
When a cc/min Meter Becomes the Only Choice
Standard flow meters lose signal below 50 cc/min. A turbine rotor stalls. A gear meter leaks through clearances. In practice, a food flavour line in Thailand needed to dose 3 cc/min of pandan extract. Only a micro Coriolis sensor gave stable readings. Silver Instruments fitted an SIC-003 meter and the customer eliminated batch rejects the same week.
Most engineers skip this part but the physics explain it. Coriolis meters measure mass flow from the phase shift of vibrating tubes. There are no mechanical clearances to cause zero drift. A gas bubble of 0.1 cc can ruin a small batch, so density measurement from the same sensor gives an immediate alarm if gas enters the line. A brewer in Australia uses this live density signal to detect empty extract drums before air reaches the bottling machine.
Selection That Prevents Costly Returns
We see customers order the wrong meter because they only specify the flow range. The real selection needs four data points. Send us your pressure in bar, temperature in degrees Celsius, pipe size in DN, and flow range. A paint hardener line in Vietnam runs at 40 bar and 65 degrees Celsius. The 0.15 cc/min dose requires a meter with 100 bar rating and Hastelloy wetted parts because the hardener attacks stainless steel. Our team sized an all-Hastelloy micro Coriolis unit and the plant has not replaced a meter in 18 months.
Viscosity is another trap. A positive displacement meter rated for 5 cc/min will slip heavily with a 2 cP solvent. A Coriolis meter ignores viscosity changes between 1 cP and 10,000 cP. A cosmetics lab in Indonesia formulates with silicone oil, ethanol, and glycerine in the same filling line. One meter handles all bases without recalibration.
Installation Rules That Field Technicians Follo
Mount the meter vertical with upward flow. This self-drains if the fluid leaves residue and prevents bubble traps. Add a dampener if the pump pulses below 1 Hz because pulsating micro flow creates velocity overshoot. The meter output then swings by 30 percent of rate even though the average flow is correct. A hydrogen peroxide dosing unit in Kenya had this issue until we added a simple inline dampener. The deviation dropped below 0.5 percent.
A 10-micron Y-strainer is mandatory. For very low flows, a single speck of dirt can block the 0.8 mm tube bore. We ship every micro meter with a factory-fitted strainer recommendation. Also install a continuous vent valve on the highest point. We have seen many customer sites where a 2 cc air pocket caused a 15 percent underdose for the first 20 seconds of each injection.
Frequently Asked Questions
Can a cc/min Coriolis meter measure gas?
A: Yes. It handles gas mass flow from 0.5 cc/min to 200 kg/h without pressure temperature compensation. Provide gas type, minimum flow, and line pressure for a correct range.
What is the smallest flow rate you can detect?
A: Our prototype stage detects 0.05 cc/min for water. Calibrated standard range starts at 0.1 cc/min for liquids. Repeatability stays within 0.05 percent of rate.
Do I need to bypass the meter during CIP?
A: Not with our straight single-tube design. Pigging and hot CIP flow pass through the meter up to 100 bar. Confirm cleaning temperature and chemical concentration before ordering.
How does high viscosity affect the signal?
A: Coriolis meters are immune to viscosity drift. A heavy silicone oil at 5,000 cP reads within 0.2 percent of the lab scale value. PD meters lose linearity below 10 cP.
Do you supply ATEX-approved meters for solvent dosing?
A: Yes, intrinsically safe versions carry II 2G Ex ia IIC T4 Ga certification. We need the gas group, zone, and temperature class with your inquiry.
To get a firm quote for a cc/min flow meter, send your flow range, fluid name, operating pressure, temperature, and preferred output 4-20 mA HART, Modbus RTU, or pulse to the Silver Automation Instruments team. We return a data sheet and price within one business day.
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