Moment Compensated Load Cell | 0-300kg to 0-750kg | OBUH

Accurate, Lightweight & Adaptable Compression Measurement

OBUH Single Point Moment Compensated Compression Load Cell
3D

At a Glance

  • Capacities: 300kg up to 750kg
  • Output: 2mV/V
  • Environmental Protection: IP67
  • High Accuracy: <±0.03%/RC
  • Integral Overload Stop
  • ATEX Certificate: EEx ia IIC T4
  • Dual Cantilever Design
  • Designed for Low Range Measurement Applications – Ideal in Weighing Scales
  • Suitable for Industrial Environments
  • Save on Installation Time – Ideal for Retrofitting
  • Lightweight & Low Cost for Price Sensitive Applications
  • High Accuracy Guaranteed – Dual Cantilever Design
  • Customised Versions to Suit Your Specific Application
  • Immersion Protection up to 1m on Request – Humid or Flood Risk Locations

Description

Applied Measurements OBUH low profile moment compensated load cell is designed for use in weighing scales and a wide selection of force measurement applications such as manufacturing, testing, research and development.  It is primarily designed for compression measurements, but it can also measure tension loads, or it can be used bi-directionally.

The moment compensated load cell uses a dual cantilever beam design which makes them insensitive to bending moments and also offers extremely high accuracy and stability, while aluminium construction ensures light weight and low cost.

Customised single point moment compensated load cell versions with dimensions and fixings to allow direct retro-fitment in place of obsolete products or to suit specific applications are available on request.

We selected the OBU series load cells from Applied Measurements because they provide us with the accuracy, long term stability and environmental protection that our weighing systems require – at an excellent price.

Mark Thorp, Technical Director at C.F Whaler Ltd, UK, 14/May/2015 OBU single point load cells May 14, 2015

Technical Specifications

Product Dimensions

Model
Capacity (kg)
A
B
C
D
F
G
H
L
Q
V
X
J
Weight (kg)
OBUH
300, 500, 750
191
76.2
75
111
125
25
60
33
40
-
3
M8x1.25 - 15 deep
2

All dimensions are in mm

OBUH Single Point Moment Compensated Load Cell Outline Drawing
CHARACTERISTICSOBUGOBUGOBUCUNITS
Rated Capacity (RC)0-0.25, 0-0.5, 0-1, 0-20-3, 0-5, 0-10, 0-15, 0-20, 0-30, 0-400-10, 0-15, 0-20, 0-30, 0-50, 0-100, 0-200kgf
Operating ModesCompression only
Sensitivity (RO)1.5 nominal2±10%2±10%mV/V
Maximum Platform Dimensions200 x 200350 x 350400 x 400mm
Zero Balance/Offset<1<1<10±%/Rated Output
Creep (30 mins)<0.08<0.03±%/Rated Capacity
Non-Linearity<0.03±%/Rated Capacity
Hysteresis<0.02%/Rated Capacity
Repeatability<0.02±%/Rated Capacity
Temperature Effect on Zero<0.005<0.002<0.006±%/Rated Capacity/˚C
Temperature Effect on Sensitivity<0.015<0.002<0.015±%/Applied Load/˚C
Effect of Eccentricity<0.015<0.006±%/Rated Capacity/cm
Input Resistance400 nominalOhms
Output Resistance350 nominalOhms
Insulation Resistance>2000 @ 50VdcMegohms
Excitation Voltage10 recommended (2-15 acceptable)Volts AC or DC
Operating Temperature Range-20 to +70˚C
Compensated Temperature Range-10 to +40˚C
Storage Temperature Range-20 to +70˚C
Safe Overload150% of Rated Capacity
Ultimate Overload300% of Rated Capacity
Deflection @ Rated Capacity<0.5 nominalmm
Resonant FrequencyConsult Sales Team
IP Rating (Environmental Protection)IP65: 2kg and below | IP67: 3kg and above
Weight (excluding cable)See dimension table
Fatigue Life108 cycles typical (109 cycles on fatigue-rated version)
Cable Length (as standard)0.50.43metres
Cable Type4 core screened, PVC sheath4 core screened, PVC sheath,6 core screened, PVC sheath,
ConstructionAluminium Alloy
Resolution1 part in 250,000 (with appropriate instrumentation)
WireDesignation
Red+ve excitation
Black-ve excitation
Green+ve signal
White-ve signal
Blue+ve sense
Brown-ve sense
ScreenTo ground – not connected to load cell body

OBUH Ordering Codes & Options

Core ProductCapacity (inc Engineering Units)Cable Length (m)Specials CodeExample Result
OBUH300kg3000OBUH-300kg-003-000
OBUH500kg3000OBUH-500kg-003-000
OBUH750kg3000OBUH-750kg-003-000

Downloads

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

Single Point Load Cells Help Farmers Balance the Scales

front page obug pyramid

The Challenge – Design a weighing system to accurately measure the weight of birds maximising poultry farming profitability. Poultry farmers need to accurately weigh the birds to ensure they meet the correct specification and adjust the bird feed mix accordingly.
Read more...

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    Why Applied Measurements?

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    • Over 100 years of expert transducer knowledge
    • Our high quality products all come with a 3 year warranty