Load cells come in various shapes, sizes and capacities and are now the industry standard for all types of weighing. It can be a bit of a mine field looking for the 3 axis load cell for the application. I have listed many of the most common found today and their uses.
Single Point – Single point are some of the cheapest and many popular type on the market today. Because of their price and reliability, they are available in most varieties of retail scales, counting scales, medical scales, parcel scales and postal scales. This sort of load cell may also be used in platform scales and industrial weighing systems to supply accurate readings no matter the positioning of the load on the platform, reducing manufacturing costs.
Canister Type – Canister type have existed for some time and tend to be the business standard for many high capacity, compression applications. Canister type load cells can be used for single and multi-weighing applications. This sort of cell has a button on the top and bottom side and may be used in compression only. Canister type load cells are employed in tank scales, vessel weighing applications, axle weighing scales, truck weighing, vehicle scales and weighbridges. Canister type load cells offer accurate weighing in harsh environments.
Double Ended Shear Beam – For medium to high capacity applications, the double ended shear beam offers numerous advantages over other designs. This kind is able to rock on its mountings to accommodate any misalignment in mounting surfaces whilst still being retained, this too permits limited movement to allow for thermal expansion and contraction in addition to lift off protection. This type of cell is also available as a weighing module kit.
Single Ended Shear Beam – Single ended shear beam are commonly present in all kinds of floor, platform and shipping scales today and provides an excellent solution for the majority of medium capacity weighing applications. Single ended shear cells have the ability to withstand full capacity side load with no problems which makes them particularly appropriate for weighing systems with mixers, blenders and agitators. This type are extremely durable but may become costly and cumbersome to mount above 10,000kg. This kind of load cell sensor is additionally offered in weighing module form.
Tension Link – The tension link are compatible with applications like winching, hanging scales, crane weighing scales and lifting systems. This sort of load cell offers superior accuracy at high capacity weighing. This type of cell has openings at either end to permit for convenient connection to shackles, wire rope, D links or any other rigging. Tension link load cells offer a rugged design for effectiveness against side loading.
Torsion Ring – Torsion ring really are a relatively new concept in design and offer an outstanding low profile solution for a wide range of weighing applications. Unlike standard compression load cells, which may readily suffer from off-axis loading problems, torsion rings are loaded via a centrally located annular ring. By using a central floating pin to transmit load to this ring, optimum load introduction is assured and off-axis loads as much as 3 or 4 degrees could be tolerated without loss in performance. Proprietary mounting modules, which offer excellent versatility, are readily available for both process weighing applications and platform scales.
Weighing Modules – Weighing module generally consists of a load cell with mounting kit. Many types of now come supplied as modules but generally single or double ended shear beam and canister type would be the industry standard. Load cell weighing modules are employed in tank scales, silo weighing, vessel weighing applications, axle weighing scales, truck weighing, vehicle scales and weighbridges.
Wireless – All of the above have one major flaw; they are linked to devices via cable. One of the primary issues with any weighbridge or floor scale is the possibility of damaged cables. Utilizing the ifegti technology, wireless, load cells are being provided and may 1 day become the industry standard. All of the above load cells are now offered in wireless format, although this technology comes at greatly increased price.
S Type – S type have their name off their shape, being the letter ‘S’. S type load cells can offer an electronic output when used in either tension or compression and offer superior side load rejection. This tension load cell has two female threaded fixing points, top and bottom were eye bolts or thread rod ends can be attached. This kind are used in crane scales, hanging scales, hoist scales and a lot tension applications.
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