Load cells come in several shapes, sizes and capacities and are now the industry standard for all sorts of weighing. It may be a bit of a mine field searching for the 3 axis load cell for the application. I have listed some of the most common found today and their uses.
Single Point – Single point are some of the cheapest and a lot popular type on the market today. Because of the price and reliability, they are available in most varieties of retail scales, counting scales, medical scales, parcel scales and postal scales. This kind of load cell may 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 are usually 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 has the capacity to rock on its mountings to allow for any misalignment in mounting surfaces whilst still being retained, this too permits limited movement to permit for thermal expansion and contraction along with lift off protection. This kind of cell is also available as being a weighing module kit.
Single Ended Shear Beam – Single ended shear beam are generally present in all sorts of floor, platform and shipping scales today and offers an ideal solution for many medium capacity weighing applications. Single ended shear cells have the ability to withstand full capacity side load with no problems causing them to be particularly suitable for weighing systems with mixers, blenders and agitators. This kind are extremely durable but may become costly and cumbersome to mount above 10,000kg. This kind of load sensor is also obtainable in weighing module form.
Tension Link – The tension link are suitable for applications including winching, hanging scales, crane weighing scales and lifting systems. This sort of load cell offers superior accuracy at high capacity weighing. This kind of cell has openings at either end to enable for quick link to shackles, wire rope, D links or any other rigging. Tension link load cells give a rugged design for effectiveness against side loading.
Torsion Ring – Torsion ring certainly are a relatively recent concept in design and supply an outstanding low profile solution for an array of weighing applications. Unlike standard compression load cells, which can 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 for this ring, optimum load introduction is assured and off-axis loads as much as 3 or 4 degrees may be tolerated without loss in performance. Proprietary mounting modules, that offer excellent versatility, are available 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 the industry standard. Load cell weighing modules are used in tank scales, silo weighing, vessel weighing applications, axle weighing scales, truck weighing, vehicle scales and weighbridges.
Wireless – The above have one major flaw; they are connected to devices via cable. One of the main difficulties with any weighbridge or floor scale is the risk of damaged cables. Utilizing the ifegti technology, wireless, load cells are actually being made available and may one day function as the industry standard. The suggestions 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 from 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 could be attached. This kind are employed in crane scales, hanging scales, hoist scales and many tension applications.
For additional information, technical details and capacities of load cells or industrial weighing scales in general then please simply click one of the links in this article.