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『Krohne Flow Meter Technology: Electromagnetic and Ultrasonic Solutions』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)
Krohne Flow Meter Technology: Electromagnetic and Ultrasonic Solutions
Quick Answer: Krohne electromagnetic flowmeters deliver ±0.2% accuracy for conductive liquids from DN3 to DN3000. Krohne ultrasonic meters measure liquids and gases with no pressure drop, using clamp-on or inline sensors. Silver Automation Instruments supplies these technologies with fast quotes, technical selection, and support to Southeast Asia, the Middle East, and Latin America.
Electromagnetic Flow Meter Technology from Krohne
Krohne designs electromagnetic flowmeters around Faradays law. A magnetic field excites the flow tube while electrodes pick up voltage proportional to flow velocity. The liners and electrodes come in many materials. PTFE, PFA, hard rubber, and ceramic liners handle acids, alkalis, and abrasive slurries. Electrode choices include Hastelloy C, titanium, tantalum, and platinum.
In practice, most engineers skip the material selection step and call us. A water utility in Indonesia needed a DN600 meter for raw river water with suspended solids. We specified a Krohne OPTIFLUX 2300 with polyurethane liner and stainless steel electrodes. The meter has been in service for three years without failure.
Krohne electromagnetic meters work from DN3 up to DN3000. The minimum conductivity is often 5 µS/cm, but some models reach 1 µS/cm for demineralized water. At Silver Instruments, we quote models with integral or remote transmitters, 4-20 mA HART, Modbus, and Profibus. For hazardous areas we supply ATEX Zone 1 and Zone 2 approvals. Temperature ratings go from -40 °C to 180 °C with appropriate liners.
Ultrasonic Flow Meter Technology from Krohne
Krohne ultrasonic flowmeters use transit time difference for liquids and gases. Clamp-on sensors mount outside the pipe and do not contact the fluid. This suits corrosive chemicals, high-purity water, and applications where pipe shutdown is impossible. Inline ultrasonic meters for custody transfer achieve accuracies of ±0.5% of reading or better.
Here is the thing: clamp-on ultrasonic performance depends on pipe condition. A paint manufacturer in Vietnam asked us for a flowmeter to measure solvent on a DN80 carbon steel pipe with old coating. We recommended a Krohne OPTISONIC 6300 portable clamp-on and instructed them to prepare clean measurement spots. The result was a repeatable signal within 1% of their reference tank gauge.
For gas applications, Krohne offers the ALTOSONIC series for high-pressure natural gas, and the OPTISONIC 7300 for process gas and biogas. These meters handle pressure up to 420 bar and temperature from -40 °C to 200 °C. A biogas plant in Thailand uses a DN100 inline ultrasonic meter to track methane flow to the grid.
Why Engineers Choose Silver Instruments for Krohne Products
Silver Automation Instruments is not a simple online catalog. We keep detailed technical manuals and configuration software for Krohne devices. We test and calibrate meters before shipping. If you give us your pressure (bar), temperature (°C), pipe size (DN), flow range, and fluid name, we will return a complete quotation with lead time, wiring diagram, and installation
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We ship to Australia, Nigeria, Chile, UAE, and more than 40 countries. For urgent breakdowns we hold common sizes in stock: DN25, DN50, DN80, DN100 electromagnetic meters, and clamp-on ultrasonic sets. Contact our engineers at [email protected] or call +86-25-68650347. WhatsApp and WeChat are available at +86-25-52155837 and +86 15365082610.
Real-world Applications
Seawater desalination: Electromagnetic flowmeters with titanium electrodes and PFA liner for high-salinity feed brine. A Middle East SWRO plant uses nine DN400 Krohne meters on the membrane feed lines.
Chemical dosing: Ultrasonic clamp-on meters measure sodium hypochlorite without wetted parts. A Chilean mining company monitors reagent flow on HDPE pipes with DN15 clamp-on sensors.
Custody transfer of crude oil: Inline 8-path ultrasonic meters provide 0.15% uncertainty for fiscal metering in Nigeria.
Water and wastewater: Battery-powered electromagnetic meters with GPRS communication for remote well fields in rural Australia.
Food and beverage: Sanitary electromagnetic meters with Tri-clamp connections and FDA-approved liners for milk and beer filling lines.
FAQ
1. What is the accuracy of a Krohne electromagnetic flowmeter?
Standard accuracy is ±0.2% of reading for liquids with conductivity above 5 µS/cm. High-end models achieve ±0.1%. For custody transfer, OIML R49 certified meters are available.
2. Can Krohne ultrasonic flowmeters measure steam?
Yes. Krohne offers steam-specific transducers. You need to specify steam pressure and temperature to select the correct transducer type. We have installed steam meters at a palm oil refinery in Malaysia with 12 bar saturated steam.
3. What is the maximum pipe size for clamp-on ultrasonic meters?
Krohne clamp-on ultrasonic sensors cover pipe diameters from DN15 to DN3000. Larger pipes up to DN6000 are possible with special rails. For a cooling water line in Saudi Arabia we used DN2400 clamp-on ultrasonic meters.
4. Do I need straight pipe runs for Krohne electromagnetic meters?
Krohne recommends 5D upstream and 2D downstream straight run for standard installations. With flow conditioners or provided inlet sections, you can reduce this to 0D upstream in some designs. Always share your piping layout when you request a quote.
5. How do I get a price and delivery time for a Krohne flowmeter?
Send us your process parameters: fluid, pressure (bar), temperature (°C), pipe size (DN), flow range, output signal required, and hazardous area classification. Email to [email protected] or WhatsApp +86-25-52155837. We reply within 4 business hours.
Request a Quote
Give us your pressure (bar), temperature (°C), pipe size (DN), and flow range. Our engineers will select the right Krohne electromagnetic or ultrasonic flowmeter and send you a detailed quotation. Reach Silver Automation Instruments at [email protected], Tel: +86-25-68650347, WhatsApp: +86-25-52155837, WeChat: +86 15365082610.