Level Instruments

WELK Meters supplies a complete range of industrial level instruments: 80 GHz FMCW radar level meters (WKD18/KJD-80) measuring up to 70 m with a narrow beam that ignores steam, dust and foam; ultrasonic level meters in integrated and split versions with ranges up to 100 m, IP68 protection verified by 30 months of continuous submersion, and four interchangeable probe types for clean water, sewage and corrosive chemicals; the compact WKSL-100 ultrasonic sensor for tanks and small sumps; submersible hydrostatic level transmitters for wells and reservoirs; and WKD/C magnetic level gauges for direct visual indication on pressurized vessels. Outputs include 4–20 mA, RS-485 Modbus and relay control channels, with explosion-proof and acid/alkali-proof variants available. These instruments serve water and wastewater plants, pump stations, chemical storage farms, silos and hydropower reservoirs. Factory-direct supply from Baoding, China means small MOQ, OEM/ODM customization and an engineer’s reply to every inquiry within 24 hours.

Showing all 5 results

  • 80 GHz radar level meter KJD-80 with DN80 stainless flange — front view

    80 GHz Radar Level Meter (WKD18 / KJD-80)

    • 80 GHz high-frequency FMCW radar with WKD18 sensor
    • Maximum measuring distance up to 70 m
    • Narrow beam and small antenna for easy installation
    • Unaffected by steam, dust, foam, temperature and pressure variation
    • Threaded base or flange sealing mount
    • Suited to low-dielectric media and solids/powder silos
  • Submersible Hydrostatic Level Transmitter (Armored / Anti-Corrosion) — product photo

    Submersible Hydrostatic Level Transmitter (Armored / Anti-Corrosion)

    • Measuring range 0–200 mH₂O
    • Accuracy 0.25% and 0.5%; display accuracy ±0.1% FS
    • Long-term stability <0.2%/year
    • 316L stainless steel isolated-diaphragm sensing structure
    • Supply 12–32 VDC; IP65; working temp -30–70 °C
    • Variants: armored rod/cable, submersible cable, anti-corrosion, measurement & control set
  • WELK ultrasonic level meters in blue, grey and yellow housings

    Ultrasonic Level Meter — Integrated & Split Type

    • Integrated type: ranges 0–3 up to 0–100 m; split type: 0–3 up to 0–70 m
    • Accuracy 0.25%; blind zone from 0.15 m
    • Output 4–20 mA and RS-485; relay control (2-channel integrated / 4-channel split)
    • Supply 24 VDC or 220 VAC; IP68 protection
    • Explosion-proof split version Exd(ia) II BT4; acid/alkali-proof version with PTFE-faced sensor
    • 12864 dot-matrix display (integrated type)
  • WKD/C Magnetic Level Gauge — product photo

    WKD/C Magnetic Level Gauge

    • Magnetic float drives red/white 180° flipping indicators — no power needed for local indication
    • Working pressure up to 16 MPa
    • Medium temperature: standard ≤350 °C; remote type ≤80 °C; anti-corrosion type ≤120 °C
    • Wetted materials: 316, 316L, 304, PTFE-lined 304, PVC, PP
    • Options: ON/OFF level switches (no external power), 4–20 mA remote transmitter, drain valve
    • Explosion-proof option ExibCT4; side-mount (code C) or top-mount (code D)
  • WKSL-100 Compact Ultrasonic Level Sensor — product photo

    WKSL-100 Compact Ultrasonic Level Sensor

    • Ranges 0.3–5 m, 0.3–8 m, 0.5–12 m (selection L = 4–40 m)
    • Accuracy ±0.3% × range; minimum resolution 1 mm; 12° beam angle
    • Outputs: 4–20 mA (load >300 Ω), 0–5 V / 1–5 V, RS485 (Modbus), NPN switch
    • Supply DC12–24 V, power <1.5 W; IP65
    • Compact PP housing Φ83×145 mm, M65×1.5 mount; from 272 g
    • Five types A–E: integrated 2/3/4-wire and split 4-wire versions

Level Measurement Guide

Choosing the right level technology depends on the medium, tank geometry, temperature, pressure and accuracy required. WELK Meters covers four proven technologies: submersible hydrostatic transmitters (to 200 mH₂O), WKD/C magnetic level gauges (to 16 MPa, 350 °C), ultrasonic level meters (to 70 m, IP68) and 80 GHz FMCW radar (to 70 m).

Technology selection at a glance

  • Hydrostatic (submersible) — wells, reservoirs, open tanks; simple and economical; anti-corrosion versions available.
  • Magnetic level gauges — direct visual indication on pressurized vessels; add reed-switch alarms or 4–20 mA remote transmission; explosion-proof option ExibCT4.
  • Ultrasonic — non-contact for water/wastewater sumps and chemical tanks; integrated or split versions; blind zone from 0.15 m.
  • 80 GHz radar — narrow beam, unaffected by steam, dust, foam or temperature; ideal for solids/powder silos and low-dielectric media.

Unsure between ultrasonic and radar for your tank? Send tank height, medium and process conditions — we answer with a recommendation within 24 hours.

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