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    In-Line Submersible Load Cell | IP68 | Underwater Force Sensor | DDEN

    O-Ring Sealed, Fully Submersible, Accurate and Easily Adaptable
    DDEN In-Line Submersible Load Cell
    In-Line Submersible Load Cell
    Customised In-Line Submersible Load Cell DDEN
    Lead Time
    6 - 8 weeks
    Prices From
    (excl. VAT)
    Accelerated delivery available
    Quantity, OEM & educational discounts
    3D CAD models available

    At a Glance

    • Capacities: 0-50N up to 0-50kN
    • Output: 0.75mV/V to 2mV/V
    • Fully Submersible: IP68 to 10m
    • Accuracy: <±0.15%/RC (0.05% typical)
    • Optional Integral Amplifier
    • Ideal for any Freshwater Application
    • Fully Submersible Long-Term Immersion Protected
    • Underwater Protection Guaranteed Thanks to ‘O’ Ring Sealing
    • Greater Underwater Depth Ratings Available for Deep Sea Applications
    • Special Versions Alternative Construction Materials for Seawater and other Corrosive or Aggressive Media.


    Applied Measurements high accuracy DDEN in-line submersible load cell can be used in both tension and compression and is specially designed for applications where load or force needs to be measured underwater, or in areas subject to high humidity or the risk of flooding.

    The submersible in-line load cell is sealed using ‘O’ rings to provide integrity at depths up to 10 metres as standard, with greater depths possible if the appropriate modifications are made to the design.  Applied Measurements standard in-line waterproof load cell model DDEN, is currently being used in various applications including wave tank measurement systems and mooring buoy cable tension monitoring.

    Applied Measurements DDENA in-line submersible load cell is fitted with an ICA Series Load Cell Amplifier to provide a high-level analogue output, commonly 0-5Vdc, 0-10Vdc, ±10Vdc or 4-20mA, which is suitable for use with most data acquisition and control systems.  An RS485 digital output is also possible by fitting the DCell Load Cell Digitiser in place of the ICA.

    Customised versions of our DDEN submersible load cell can be designed to meet your specific requirements.  Plus, instrumentation and rod ends are available to buy in our online shop, including calibration options to make a complete system.

    Technical Specifications

    Rated Capacity (RC)N0-50, 0-100, 0-250, 0-500, 0-1000, 0-2000, 0-5000, 0-10,000, 0-20,000, 0-50,000
    Operating ModesTension/Compression / Tension & Compression
    Sensitivity (RO)mV/V (nominal)50N = 0.5 / 100N=1.0 / 250N = 0.75 / 500N = 1.5 / 1000N up = 2.0
    Zero Balance/Offset±%/Rated Output<1.0
    Output Symmetry (tension vs. compression)±%/Rated Output<0.25 typical
    Non-Linearity±%/Rated Output (BFSL)<0.15 (0.05 typical)
    Hysteresis%/Rated Output<0.15 (0.05 typical)
    Repeatability±%/Rated Output<0.1
    Temperature Effect on Zero±%/Rated Output/ ˚C<0.005
    Temperature Effect on Sensitivity±%/Applied Load/ ˚C<0.005
    Input ResistanceOhms700
    Output ResistanceOhms700
    Insulation ResistanceMegohms>5000 @ 50Vdc
    Excitation VoltageVolts AC or DC10 recommended (2-15 acceptable) - Note mV/V only, see page 5 for details of conditioned output versions.
    Operating Temperature Range˚C-20 to +80
    Compensated Temperature Range˚C0 to +70
    Storage Temperature Range˚C-20 to +80
    Safe Overload% of Rated Capacity150
    Ultimate Overload% of Rated Capacity200
    Deflection @ Rated Capacitymm50N=0.08; 100N=0.12; 250N=0.09; 500N=0.06; 1000N=0.04; 2000N=0.03; 5000N=0.02; 10,000N=0.015; 20,000N=0.01; 50,000N=0.03
    Fundamental Resonant Frequency*kHz50N=1.7; 100N=1.3; 250N=0.72; 500N=1.18; 1000N=2; 2000N=3.1; 5000N=6.1; 10,000N=9.9; 20,000N=18.2; 50,000N=13.3
    IP Rating (Environmental Protection)IP68 to 10m depth (please consult sales for greater depths)
    Weight (excluding cable)kg50N to 20kN: 0.3kg / 50kN: 0.45kg,
    Fatigue Life108 cycles typical (109 cycles on fatigue-rated version)
    Cable Length (as standard)metres2
    Cable Type4-core screened submersible, PUR (weight: 82g/m) sheath, Ø7.5
    Construction Materials / Wetted Parts17-4PH Stainless Steel, 303 Stainless Steel, PUR, NBR, TPE, Silicone
    Resolution1 part in 250,000 (with appropriate instrumentation)
    Pressure Effect on Output9N/mH²O nominal
    *The resonant frequency is calculated with the body of the load cell attached to a large plate, ensuring that only the sensing element oscillates: This is vital to achieve the highest natural frequency and subsequent frequency response.

    Product Dimensions

    DDEN In-Line Submersible Load Cell Outline Drawing

    All dimensions are in mm

    0-50N up to 0-20kN
    0-50N up to 0-20kN

    Wiring Details

    WiremV/V Output3-Wire Voltage or Current Otput4-Wire Voltage Output2-Wire CurrentRS485 Digital
    Red+ve excitation+ve supply+ve supply+ve supply+5.4 to +18Vdc supply
    Blue-ve excitation0V common-ve supply-ve supply / signal-ve supply
    White+ve signal (tension) *+ve signal+ve signalN/CRS485 (B) Data -ve
    Yellow-ve signalN/C-ve signalN/CRS485 (A) Data +ve
    ScreenTo ground - not connected to load cell body
    * +ve signal in tension is standard, +ve signal in compression can also be offered.

    Ordering Codes & Options

    Core ProductCapacity (inc Engineering Units)Cable Length (m)Specials CodeExample Result

    Mounting And Installation Accessories

    Rod End Bearings for Tension Use

    Designed to align forces through the principle axis of the load cell thus reducing the effects of extraneous forces, hence offering improved performance from the cell.

    Rod End Bearings are used where tensile forces are being applied.

    Maintenance-free rod ends are a complete units made up of a housing with both an integral shank (with an internal or external thread) and a maintenance-free spherical plain bearing, located within the housing.

    Key Features:

    • Supports radial loads in a tensile or compressive direction.
    • Suitable for unilateral loads – can support alternating loads and alternating loads in combination with bearing GE..UK-2RS, consult sales.
    • Stainless Steel for corrosion resistance.
    • Are maintenance-free.
    • Fitted with radial spherical plain bearings.
    • PTFE composite sliding contact surfaces.
    • Enables compact adjacent construction thanks to its thin-walled design of the eye housing.
    Rod End Bearing GIRSW

    All dimensions are in mm

    LOAD CELLORDERING CODESSize (D)BMAFLKJOSWGGLStatic load C0 kNDynamic load C kNLimiting Speed rev/minWeight g
    DDEN + DDENA-50N to 20kNGIRSW-12RR-3161216123250662217.515.419M122234.532300115


    CAD Model Files

    Our 3D models are provided in STEP format and can be viewed using FreeCAD. Other formats can be provided on request.

    The .zip file below contains a separate model for each product variant.

    Case Studies

    close up of tidal turbine test rig

    Submersible Load Cells Lower the Cost of Large Tidal Turbine Designs

    This case study aims to significantly reduce the cost of large scale tidal turbine designs using our submersible load cells. The tidal turbine test rig was placed in a state-of-the-art test tank, where the team were able to increasing the size, flow rate and turbulence levels within the tank. Lowering the cost of rotor blade manufacture would make this renewable energy more economical to use and widely accessible, benefiting not only the UK renewable tidal energy markets but developing tidal energy countries too. Our submersible load cells measured both the torque and the thrust of the underwater tidal turbine design.


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