This website uses cookies. By browsing our website you accept the use of cookies. For more information read our Terms of Use. Allow cookies. Share this Article! Contact this supplier Only available for registered users. The objectives of structural health monitoring are a mix of risk and safety management, improved maintenance scheduling, and the measurement of ongoing deterioration.
Bridge structural health monitoring. JF Strainstall design and manufacture a range of high-quality standard and bespoke load cells suitable for a variety of applications.
Load shackles from JF Strainstall are a simple and highly effective way to measure tension in a variety of applications. IMMS provides a single high-level monitoring and control solution for fixed and floating offshore structures. Integrated marine monitoring system. Strain rings James Fisher Strainstall manufactures two types of strain ring for standard or subsea applications Strain ring products.
Oil and gas Supporting exploration, production and decommissioning with world class monitoring products and solutions Oil and gas solutions. Renewable energy market James Fisher Strainstall provides load monitoring solutions for floating offshore renewable assets Renewables solutions.
NEWS read more. Load testing. Temporary works monitoring. Literature View James Fisher Strainstall's data sheets and brochures. Videos View James Fisher Strainstall's latest videos. Combined with the ready availability of linear amplifiers and there is very little benefit over a strain gauge load cell. Magnetorestrictive load cells work based on the stresses caused by a load being applied causing distortions in the magnetic flux pattern which then generates a proportional output signal.
Load pins are the simplest and most reliable method of measuring loads and they can be used in a wide number of applications, including the most difficult of environments such as offshore and subsea. Their design makes them a straightforward replacement for existing dumb pins without modifications to the system.
Explore our case studies below for real world applications of JF Strainstall load pins:. Their compact design makes them ideal for weighing applications where space is limited such as silo weighing.
Designed specifically with harsh environments in mind, load shackles are used in heavy lift applications such as under hook crane weighing or water weight bag testing where there is limited head room.
Explore our case studies below for real world applications of JF Strainstall load shackles:. Micro load cells are extremely small load cells which typically use a semiconductor to measure deformation rather than a strain gauge. T hey are mostly used in applications where space is at a premium. Most micro load cells are designed to only measure force from a single direction so when they are in operation it is important to be aware of any forces which may be being exerted from another direction and therefore affecting the accuracy of the reading.
S-Beam load cells can provide an output if under tension or compression and are typically used for measuring suspended loads. A popular choice for a wide variety of load cell applications , bending beam load cells feature low profile construction , are compact and rugged. Platform and single point load cells can accept an off-centre load , enabling them to provide accurate readings regardless of where the load is positioned on the platform.
Typically they would be used in a low capacity, compact weighing system. A shear beam load cell typically has two restraining bolts at one end for support and then the load cell at the other end, though there are double-ended variations where the load is placed i n the centre.
Direct vs indirect, when discussing load cells, refers to where the load monitoring device sit s within the load path. If the monitoring device is fitted within the primary load path and taking direct measurements from the load exerted on the equipment, this is direct load monitoring. Conversely, indirect measuring refers to measuring which avoids the primary load path, determining load by measuring its results from outside that path. Due to avoiding the primary load path, indirect monitoring may be more cost effective at higher loads.
A greater sensitivity indicates a load cell is better at detecting smaller changes in tension — it is the minimum amount of force needed to cause a change in a load cells output. Resolution on the other hand refers to the load cells ability to produce an output relative to the detected change. Divide your output by your excitation voltage to work out a ratio eg.
The greater the ration the greater the load cells sensitivity. If you are purchasing a load cell you should look for information on the excitation voltage usually given as V or VDC and the output mV. A greater signal resolution means a higher signal to noise ratio and so a greater sensitivity. The lower the ratio, the less accurate your load cells measurement is. A higher sensitivity means that load cells are able to detect smaller changes faster and with less noise interference.
This means that measurements are faster, more accurate and more reliable. There are many industrial uses for load cells, including:. On-board weighing. Platform weighing. Overhead crane scales. Hopper scales.
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