Load cells come in several 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 correct load cell for the application. I have listed many of the most common found today along with their uses.
Single Point – Single point are the cheapest and a lot popular type on the market today. Due to 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 can also be used in platform scales and industrial weighing systems to provide accurate readings regardless of the position of the load on the platform, reducing manufacturing costs.
Canister Type – Canister type have been around for some time and tend to be the market standard for most high capacity, compression applications. Canister type load cells are used for Torque Transducer. This kind 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 has the ability to rock on its mountings to support any misalignment in mounting surfaces whilst still being retained, this permits limited movement to enable for thermal expansion and contraction in addition to lift off protection. This sort of cell is also available being a weighing module kit.
Single Ended Shear Beam – Single ended shear beam are generally found in all kinds of floor, platform and shipping scales today and provides a perfect solution for most medium capacity weighing applications. Single ended shear cells are able to withstand full capacity side load with no problems which makes them particularly suitable for weighing systems with mixers, blenders and agitators. This kind are incredibly durable but may become costly and cumbersome to mount above 10,000kg. This sort of cell is additionally available in weighing module form.
Tension Link – The tension link are suitable for applications like winching, hanging scales, crane weighing scales and lifting systems. This type of load cell offers superior accuracy at Button Load Cell. This kind of cell has openings at either end to allow for convenient connection to shackles, wire rope, D links or any other rigging. Tension link load cells provide a rugged design for resistance to side loading.
Torsion Ring – Torsion ring really are a fairly new concept in design and provide a great low profile solution for a wide range of weighing applications. Unlike standard compression load cells, which could readily are afflicted by off-axis loading problems, torsion rings are loaded via a centrally located annular ring. Simply by using a central floating pin to send out load for this ring, optimum load introduction is assured and off-axis loads as much as 3 or 4 degrees can be tolerated without loss in performance. Proprietary mounting modules, that offer excellent versatility, are now designed for both process weighing applications and platform scales.
Weighing Modules – Weighing module generally is made up of load cell with mounting kit. Many types of now come supplied as modules but generally single or double ended shear beam and canister type are definitely 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 risk of damaged cables. Making use of the latest technology, wireless, load cells are being presented and can some day be the industry standard. All of the above load cells are now obtainable in wireless format, although omqzxd technology comes at greatly increased price.
S Type – S type obtain their name off their shape, being the letter ‘S’. S type load cells can provide Multi Axis Load Cell when found in either tension or compression and offer superior side load rejection. This sort of cell has two female threaded fixing points, top and bottom were eye bolts or thread rod ends could be attached. This type are utilized in crane scales, hanging scales, hoist scales and a lot tension applications.