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AquaWave 138 W51

The Radar Level Transmitter Liquid (138 W51) is a high-performance, non-contact level sensor designed for precise measurements in various water applications. It uses advanced FMCW radar technology, ensuring accuracy with respect to the surrounding environmental conditions. The device offers a high measurement accuracy of ±5 mm with an 8° beam angle, a 300 mm dead band, and operates within a temperature range of 0°C to 60°C. It provides a maximum measuring range of up to 30 meters. The 138 W51 features a two-wire configuration and delivers a 4–20 mA output signal with optional HART communication for improved integration and diagnostics. Its design and reliable performance make it suitable for a wide range of water and wastewater level measurement applications.

  • Features
    • Configured through Bluetooth by using mobile app
    • HART-enabled (optional)
    • Maintenance-free operation
    • Minimal dead band 300 mm for maximizing small tank fill capacity
    • Rugged PP antenna and enclosure for liquid
  • Specification
    Specification Details
    Measuring Range (m) 10 m, 15 m & 30 m
    Dead Band (mm) 300 mm
    Beam Angle 8°
    Power Supply 24 VDC @ 30 mA
    Accuracy ±5 mm*
    Analog Output 2 Wire, 4-20 mA @500 Ω load
    Communication Output HART 7 (Optional)
    Device Configuration Through Bluetooth Communication By Using Mobile App
    Threading Type 1½” NPT Threaded
    Slip-on Flange Type 2″ / 2½” / 3″ / 4″ / 5″ / 6″ ANSI 150#
    Antenna Type Lens Antenna
    Housing Enclosure PP / Aluminum
    Antenna / Sensor Material Polypropylene (PP)**
    Flange Material Polypropylene (PP), Carbon Steel (CS), Stainless Steel (SS316), Stainless Steel (SS304)
    Cable Jacket Material PE / PVC
    Cable Length (m) Top / Standard 2 m (Extra length optional on request)
    Protection Class Standard IP67 / IP68 on Request
    Process / Operating Temperature 0°C to 60°C
  • Application
    • Water Storage Tanks (Elevated Storage Reservoirs & Overhead Tanks)
    • Hydrological Monitoring Systems (Rivers, reservoirs, and dams)
    • Irrigation Systems (canals and distribution tanks)
    • Drinking Water Treatment Plants (Clean water tanks and filtration units)
    • Water Resource Development Projects (Lakes, ponds, and artificial reservoirs)
    • Wastewater Collection and Treatment (Clarifiers, sumps, and storage tanks)
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