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『Capacitive Flow Meter: Measuring Dielectric Liquid and Slurry Volume Inline』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
Capacitive Flow Meter: Measuring Dielectric Liquid and Slurry Volume Inline
Quick Answer: A capacitive flow meter gives inline volume measurement for dielectric liquids and many slurry types without moving parts. It works in low conductivity fluids where magnetic flow meters often fail. Send Silver Instruments your pipe size, dielectric constant, solids content, pressure, temperature, and flow range for a specific model recommendation.
What Inline Volume Measurement Means for Your Process
Most plants measure liquid volume with electromagnetic or Coriolis meters. But a capacitive flow meter solves a specific case. It measures the volume of a dielectric liquid or slurry as it moves through a spool piece. There are no rotating gears, no electrodes, and no wetted moving parts. That matters for liquids with solids, thin coatings, or changing viscosity.
Dielectric liquids have low electrical conductivity. Water based slurries with mineral solids often fall in this group. A magnetic flow meter usually needs minimum conductivity above 5 µS/cm. A capacitive flow meter does not depend on that limit. It reads the capacitance change as fluid moves through the sensor. For a process engineer, the result is a stable 4-20 mA HART signal that represents volume flow.
Where Capacitive Flow Meters Fit in Real Plants
We sell capacitive meters into Southeast Asia, Oceania, Latin America, Africa, and the Middle East. Buyers often operate 10 to 100 person process plants. They need a flow device that will survive in tough fluids. A paint manufacturer in Southeast Asia had an oval gear meter that wore out in six months because of pigment solids. We replaced it with a capacitive flow meter sized at DN25. The meter measured paint slurry inline and the maintenance team stopped replacing gears.
Another case came from Vietnam. A customer handling starch slurry asked for a meter that could read volume after a progressive cavity pump. The line ran at 8 bar and 40 °C. We supplied a DN50 model with PT100 temperature compensation and a 4-20 mA HART output. This is the type of detail we ask for in every quote.
In Latin America, a food plant measured chocolate slurry with a meter that clogged every week. The capacitive sensor did not clog because the flow path was straight and full bore. These are common applications. They do not cover every slurry. Very high solids above 60 percent by volume may need a review before selection.
Key Parameters We Ask for in a Quote
To get the right capacitive flow meter, we ask for more than just flow range. In practice, most engineers skip this part and later face startup delays. Send us these details from the beginning.
Pipe size in DN, such as DN15 to DN100. Fluid name and dielectric constant if known. Solids content as a percent by volume. Viscosity in cP. Process pressure in bar and temperature in °C. Required output, normally 4-20 mA HART. Hazardous area needs such as ATEX Zone 1.
One example: a desalination plant in the Middle East sent us pressure of 25 bar, temperature of 55 °C, pipe size DN80, and flow range of 12 to 60 cubic meters per hour. We recommended a capacitive
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Capacitive Flow Meter Outputs and Installation
Most capacitive flow meters from Silver Instruments output a 4-20 mA signal with HART. Some models add pulse output for totalizing volume. The electronics sit in a housing rated for IP67 or better. For remote display, we offer a DIN rail converter that accepts the signal and shows liters per minute or cubic meters per hour.
The sensor installs inline between flanges. Standard connections are ANSI 150 or DIN PN16. For smaller lines, DN15 to DN25, wafer style bodies reduce weight. For larger lines, DN50 to DN100, flanged bodies are more common. The straight run requirement is usually 5 pipe diameters upstream and 3 downstream. That is less than many ultrasonic meters.
Because there are no moving parts, the meter tolerates short term solids spikes. But do not use a capacitive flow meter as a replacement for a Coriolis mass meter when you need true mass flow. It measures volume flow. If your process needs mass in kg/h, we will guide you to a Coriolis mass flow meter from Silver Instruments.
How to Get a Quote from Silver Instruments
Send us your pressure in bar, temperature in °C, pipe size in DN, and flow range. Also include the dielectric constant or fluid name and the solids content if you measure slurry. Our engineers will respond with a specific model, not a brochure.
You can reach us by phone at +86-25-68650347. For WhatsApp, use +86-25-52155837. For WeChat, use +86 15365082610. We work with end users and distributors across Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
If you are a distributor, tell us your target country and typical customer applications. We keep project registration and pricing confidential. The result is a quick decision on the right inline flow meter for your process.
Five Questions Engineers Ask Before Buying
1. What fluid types can a capacitive flow meter handle?
It works with dielectric liquids and many slurries, including oils, solvents, starch slurry, paint slurry, and light mineral slurries. Very conductive fluids above 10,000 µS/cm are often better suited to a magnetic flow meter.
2. Can a capacitive flow meter measure slurry volume inline without a bypass line?
Yes. The full bore design allows inline installation. A bypass is not required for normal cleaning or basic servicing because there are no wetted moving parts.
3. What pipe sizes are available?
We supply common sizes from DN15 to DN100. Larger sizes may be available for specific projects. Send us your pipe schedule and flange standard.
4. What output signals are standard?
The standard output is 4-20 mA HART. Pulse output is optional for totalizing. We can also supply Modbus RS485 on request.
5. How do I get a price fast?
Send your pressure, temperature, pipe size, fluid name, solids content, and flow range. WhatsApp is the fastest path. Use +86-25-52155837 and we can usually quote within one working day.