In-Line Submersible Load_Cell_IP68_Underwater_Force_Sensor_DDEN

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

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Description

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.

Feature

  • 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.

Technical Specifications

Rated Capacity (RC) N 0-50, 0-100, 0-250, 0-500, 0-1000, 0-2000, 0-5000, 0-10,000, 0-20,000, 0-50,000
Operating Modes Tension/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 <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 Resistance Ohms 700
Output Resistance Ohms 700
Insulation Resistance Megohms >5000 @ 50Vdc
Excitation Voltage Volts AC or DC 10 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 ˚C 0 to +70
Storage Temperature Range ˚C -20 to +80
Safe Overload % of Rated Capacity 150
Ultimate Overload % of Rated Capacity 200
Deflection @ Rated Capacity mm 50N=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* kHz 50N=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) kg 50N to 20kN: 0.3kg / 50kN: 0.45kg,
Fatigue Life 108 cycles typical (109 cycles on fatigue-rated version)
Cable Length (as standard) metres 2
Cable Type 4-core screened submersible, PUR (weight: 82g/m) sheath, Ø7.5
Construction Materials / Wetted Parts 17-4PH Stainless Steel, 303 Stainless Steel, PUR, TPE, Silicone
Resolution 1 part in 250,000 (with appropriate instrumentation)
Pressure Effect on Output 9N/mH²O nominal

Product Dimensions

Model
Capacity
A
B
C
ØD
E
DDEN
0-50N up to 0-20kN
67
15
35
44
M12x1.75
DDEN
0-50kN
71
18
35
44
M16x2.0
DDENA
0-50N up to 0-20kN
67
15
35
44
M12x1.75
DDENA
0-50kN
71
17
37
50
M16x2.0

Wiring Details

Wire mV/V Output 3-Wire Voltage or Current Otput 4-Wire Voltage Output 2-Wire Current RS485 Digital
Red +ve excitation +ve supply +ve supply +ve supply +5.4 to +18Vdc supply
Blue -ve excitation 0V common -ve supply -ve supply / signal -ve supply
White +ve signal (tension) * +ve signal +ve signal N/C RS485 (B) Data -ve
Yellow -ve signal N/C -ve signal N/C RS485 (A) Data +ve
Screen To ground – not connected to load cell body
* +ve signal in tension is standard, +ve signal in compression can also be offered.

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