Load cells come in many different shapes, sizes and capacities and are now the industry standard for all types of weighing. It can be a bit of a mine field trying to find the correct load cell for the application. We have listed many of the most common found today along with their uses.
Single Point – Single point are the cheapest and most popular type on the market today. Because of their price and reliability, they are available in most types of retail scales, counting scales, medical scales, parcel scales and postal scales. This type of load cell can also be used in platform scales and industrial weighing systems to supply accurate readings regardless of the positioning of the load on the platform, reducing manufacturing costs.
Canister Type – Canister type have existed for a long period and are generally the industry standard for many high capacity, compression applications. Canister type load cells can be used for Torque Transducer. This sort of cell has a button on the top and bottom side and can be used in compression only. Canister type load cells are utilized 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 a number of advantages over other designs. This type has the capacity to rock on its mountings to support any misalignment in mounting surfaces whilst still being retained, this also permits limited movement to enable for thermal expansion and contraction in addition to lift off protection. This type of cell can also be available as a weighing module kit.
Single Ended Shear Beam – Single ended shear beam are normally present in all types of floor, platform and shipping scales today and supplies an excellent solution for the majority of medium capacity weighing applications. Single ended shear cells have the ability to withstand full capacity side load without any problems which makes them particularly suitable for weighing systems with mixers, blenders and agitators. This kind are really durable but could become costly and cumbersome to mount above 10,000kg. This sort of cell is also available in weighing module form.
Tension Link – The tension link are suitable for applications such as winching, hanging scales, crane weighing scales and lifting systems. This kind of load cell offers superior accuracy at Miniature Load Cell. This kind of cell has openings at either end to permit for quick link to shackles, wire rope, D links or other rigging. Tension link load cells provide a rugged design for effectiveness against side loading.
Torsion Ring – Torsion ring are a relatively recent concept in design and offer a great low profile solution for a variety of weighing applications. Unlike standard compression load cells, which could readily suffer from off-axis loading problems, torsion rings are loaded through a centrally located annular ring. Simply by using a central floating pin to transmit load to this particular ring, optimum load introduction is assured and off-axis loads as much as three or four degrees could be tolerated without loss in performance. Proprietary mounting modules, that offer excellent versatility, are now 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 are definitely the industry standard. Load cell weighing modules are utilized in tank scales, silo weighing, vessel weighing applications, axle weighing scales, truck weighing, vehicle scales and weighbridges.
Wireless – The above have one major flaw; these are linked to devices via cable. One of the main issues with any weighbridge or floor scale is the possibility of damaged cables. Utilizing the most advanced technology, wireless, load cells are actually being provided and can some day be the industry standard. The above load cells are offered in wireless format, although omqzxd 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 provide Multi Axis Load Cell when found in either tension or compression and provide superior side load rejection. This sort of cell has two female threaded fixing points, top and bottom were eye bolts or thread rod ends can be attached. This kind are utilized in crane scales, hanging scales, hoist scales and many tension applications.