Technical
Magnetic Level Gauge Working Principle: Float & Flags
How does a magnetic level gauge work? Float-and-flag principle, materials, transmitter options, and when it beats a sight glass. Contact…
Level measurement guides.
Selection logic, installation notes and model comparisons for level instruments.
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32 articles and counting.
Technical
Ultrasonic Level Transmitter Blind Zone: Top 0.3 m Unmeasurable
Learn why ultrasonic level transmitters can't measure the top 0.2-0.3 m (blind zone) and how frequency affects it. Contact WELK for…
Technical
Open Channel Flow Measurement with Ultrasonic: Level-to-Flow Conversion via Weirs, Flumes and the Manning Equation
Learn how ultrasonic sensors convert water level to flow via V-notch/Parshall weirs, flumes and the Manning equation — get WELK's…
Technical
Radar Antenna Selection: Horn, Lens, Drop and Air-Purge for Dust, Steam and Condensation
Horn, lens, drop and air-purge radar antennas compared for dusty, steamy and condensing tanks and silos — get the right radar antenna from…
Technical
How Accurate Is an 80 GHz Radar Level Meter? Repeatability, Damping and Noise Explained
80 GHz radar level meter accuracy explained: ±2 mm repeatability, damping vs response time, noise and false echoes. Get spec sheets with…
Selection Guide
How to Verify a Chinese Level Meter Manufacturer: Certificates, Third-Party Reports and Client References
Verify a Chinese level meter manufacturer with ISO 9001:2015 certificates, CNAS third-party reports, client references and audits. Request…
Technical
Guided Wave Radar Level Transmitter: Cable vs Rod vs Coaxial
Compare cable, rod, and coaxial guided wave radar probes: accuracy, ranges, Dk limits, and installation. Get expert GWR level transmitter…
Technical
Tuning Fork Level Switch: How It Detects Liquids and Powders
How tuning fork level switches detect liquids and powders: resonant frequency, density limits, fail-safe wiring, and comparison vs float…
Technical
Boiler Drum Level Measurement: Differential Pressure vs Guided Wave Radar vs Magnetic Gauge
Compare DP transmitters, guided wave radar, and magnetic level gauges for boiler drum level measurement. Ask WELK's engineers for a free…
Selection Guide
Point Level Switch vs Continuous Level Transmitter: Which Do You Need?
Point level switches vs continuous level transmitters: how to choose for silos, tanks and alarm safety, and get a free quote from WELK.
Technical
4-20 mA vs HART vs Modbus RS-485: Choosing the Level Transmitter Output for PLC/SCADA
Compare 4-20 mA vs HART vs Modbus RS-485 level transmitter outputs: cable length, data rate, PLC/SCADA integration and cost. Get a free…
Selection Guide
Silo Level Measurement for Powders & Cement: The Complete Selection Guide
How to measure silo level for powders and cement: compare 80 GHz radar, guided wave radar, rotary paddle, and more. Get a free quote from…
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