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Mass Flow Meter Filling Equipment for High-Speed Automated Dosing Plant Valves
Quick Answer: Mass flow meter filling equipment with Coriolis sensors gives direct mass batch control for high-speed automated dosing plant valves. Silver Instruments supplies meters from DN15 to DN50. The right meter and valve timing can hold overfill below 0.2 percent on 500 ml filling lines.
If you need a fast quote, send your flow range in kg/h, product viscosity in cP, pipe size in DN, and fill volume. Our engineers reply with a model and price.
Why Direct Mass Measurement Beats Volume in Filling Lines
A turbine meter measures volume. Temperature changes density. A Coriolis mass flow meter measures mass directly. That removes density correction. Beverage plants, solvent dosing skids, and edible oil fillers use this approach because the batch weight is the final target.
Silver Instruments Coriolis meters include a built-in PT100 sensor. The transmitter sends mass flow, density, and temperature over 4-20 mA HART. Many lines also wire a pulse output to the PLC for fast valve cut-off. Pulse resolution on a DN15 meter can reach 1000 pulses per kg. That is enough for a 100 ms valve update.
Typical accuracy for these meters is ±0.2 percent of reading for liquids. Repeatability is better than ±0.05 percent. Density accuracy is often ±0.5 kg/m3. These values matter when you fill 10000 bottles per shift and want the same weight in every bottle.
Here is the thing. But the valve matters as much as the meter. A slow valve can produce overfill even with a fast meter. A fast valve without good meter repeatability can cause short shots. We always ask for the valve type, air pressure in bar, and PLC scan time.
Valve Timing and Meter Response for High-Speed Dosing
High-speed automated dosing plant valves need a sensor that does not lag. A Coriolis meter reads mass flow in milliseconds. The PLC closes the valve on a setpoint. Some customers run 10 to 60 filling cycles per minute. The cycle count depends on container size, product viscosity, and nozzle count.
Last year a customer in Vietnam asked us for a two-nozzle filling skid. They filled 500 ml bottles with coconut cooking oil. The line ran at 26 bottles per minute. We supplied one DN15 Coriolis meter with two pneumatic valves. The overfill rate dropped below 0.2 percent. The same design works for paint tins, pharmaceutical syrups, and household chemical bottles.
In practice, most engineers skip the volume correction step once they move to mass flow. That saves PLC code and reduces operator errors. It also helps when the product temperature changes between morning and afternoon shifts. In Southeast Asia, daytime tank temperatures can shift by 8 to 12 °C. A mass meter holds the fill weight steady.
Sizing for Dosing Skids and Filling Stations
For 200 ml to 2 L containers, a DN15 meter is common. For 5 L to 20 L pails, we normally recommend DN25. For 200 L drums, DN50 or larger. The actual flow range depends on viscosity and line pressure. We have seen high
If your product viscosity exceeds 5000 cP, tell us. High viscosity can reduce meter range. We need the actual cP value, not just the product name. A paint manufacturer in Southeast Asia gave us only the product name. We assumed water-like viscosity. The meter was one size too small. After the cP value came back at 9000, we upsized to DN25 and the fill time dropped.
For chemical dosing with aggressive media, check wetted parts. Silver Instruments can supply stainless steel or high-alloy options. For solvent systems, specify ATEX Zone 1 or Zone 2. In water treatment dosing, the PLC may read 4-20 mA from a mass flow meter and a conductivity probe in µS/cm to control chemical injection.
Installation Notes from Customer Sites
Mount the meter close to the valve. Reduce bends before the meter. Ensure no gas slug enters the sensor. In chemical dosing, install a back pressure valve downstream to prevent flashing. If the meter sees two-phase flow, the reading is noisy and the dosing valve may hunt.
We have seen this on customer sites many times. A long vertical drop before the meter creates gas bubbles. The fill line works fine in the morning, then drifts after lunch. A short straight run and a downstream pressure valve fixed the problem.
What to Send for a Quote
Send us your pressure (bar), temperature (°C), pipe size (DN), and flow range. Tell us the product viscosity in cP and fill volume in ml or L. Include the valve type and the PLC output you need: 4-20 mA HART, pulse, or RS485 Modbus.
Contact Silver Automation Instruments for high-speed automated dosing plant valves and mass flow meter filling equipment. Tel: +86-135-1213-1526. WhatsApp: 86-135-12131526. WeChat: +86 13512131526.
FAQ
What is the smallest filling volume a Coriolis mass flow meter can handle?
A DN15 meter can dose 50 ml to 200 ml repeatably in water-thin products. The minimum batch depends on valve response, line pressure, and PLC scan time.
Can a mass flow meter replace a load cell on a filling line?
Yes. Many plants replace load cells with Coriolis meters because mass flow is direct and requires less moving hardware. Load cells are still useful in some legal filling applications.
Do I need a special valve for high-speed dosing?
Yes. Use a fast pneumatic valve with a good positioner or solenoid. The valve must close within the response window of the PLC. We can help with valve timing calculations.
What viscosity range works with Coriolis filling meters?
Coriolis meters handle water-thin liquids up to high-viscosity pastes. But high viscosity lowers the maximum flow rate. Send us your cP value so we size the meter correctly.
How do I ask for a quote?
Send your flow range in kg/h, product viscosity in cP, pipe size in DN, fill volume, and process temperature in °C. Use Tel: +86-135-1213-1526, WhatsApp: 86-135-12131526, or WeChat: +86 13512131526.
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