Load cells come in several shapes, sizes and capacities and are now the industry standard for all types of weighing. It may be a bit of a mine field trying to find the multi axis force sensor for the application. I have listed many of the most common found today as well as their uses.
Single Point – Single point are probably the cheapest and a lot popular type on the market today. Due to their price and reliability, they may be found in most varieties of retail scales, counting scales, medical scales, parcel scales and postal scales. This kind of load cell could also be used in platform scales and industrial weighing systems to provide accurate readings no matter the position of the load on the platform, reducing manufacturing costs.
Canister Type – Canister type have been around for a long time and tend to be the market standard for many high capacity, compression applications. Canister type load cells can be used as single and multi-weighing applications. This sort of cell includes a button on the top and bottom side and can 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 a number of 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 permits limited movement to allow for thermal expansion and contraction along with 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 an ideal solution for most medium capacity weighing applications. Single ended shear cells are able to withstand full capacity side load without the problems which makes them particularly ideal for weighing systems with mixers, blenders and agitators. This type are extremely durable but could become costly and cumbersome to mount above 10,000kg. This kind of load cell sensor is additionally available in weighing module form.
Tension Link – The tension link are suitable for applications including winching, hanging scales, crane weighing scales and lifting systems. This type of load cell offers superior accuracy at high capacity weighing. This kind of cell has openings at either end to permit for quick link to shackles, wire rope, D links or any other rigging. Tension link load cells give a rugged design for resistance to side loading.
Torsion Ring – Torsion ring certainly are a relatively new concept in design and provide an excellent 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. Using a central floating pin to deliver load to this particular ring, optimum load introduction is assured and off-axis loads as much as three or four degrees may be tolerated without loss in performance. Proprietary mounting modules, that provide excellent versatility, are now available for both process weighing applications and platform scales.
Weighing Modules – Weighing module generally is made up of load cell with mounting kit. Various types of now come supplied as modules but generally single or double ended shear beam and canister type are 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 connected to devices via cable. One of the primary issues with any weighbridge or floor scale is the possibility of damaged cables. Making use of the ifegti technology, wireless, load cells are now being presented and could one day be the industry standard. All of the above load cells are now available in wireless format, even if this technology comes at greatly increased price.
S Type – S type have their name using their shape, being the letter ‘S’. S type load cells can offer an electronic digital output when found in either tension or compression and provide superior side load rejection. This force transducer has two female threaded fixing points, top and bottom were eye bolts or thread rod ends may be attached. This kind are used in crane scales, hanging scales, hoist scales and most tension applications.
For additional information, technical details and capacities of load cells or industrial weighing scales generally then please simply click one of the links in this article.