Load cells come in various shapes, sizes and capacities and are now the industry standard for all sorts of weighing. It can be a bit of a mine field looking for the 3 axis load cell for the application. I have listed some of the most common found today as well as 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 kinds 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 supply accurate readings irrespective of the position of the load on the platform, reducing manufacturing costs.
Canister Type – Canister type have existed for a long period and tend to be the market standard for many high capacity, compression applications. Canister type load cells can be used for single and multi-weighing applications. 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 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 numerous advantages over other designs. This type is able to rock on its mountings to accommodate any misalignment in mounting surfaces whilst still being retained, this permits limited movement to enable for thermal expansion and contraction as well as lift off protection. This type 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 supplies an excellent solution for many medium capacity weighing applications. Single ended shear cells have the capacity to withstand full capacity side load without the problems causing them to be particularly suitable for weighing systems with mixers, blenders and agitators. This kind are incredibly durable but could become costly and cumbersome to mount above 10,000kg. This type of weight sensor is also obtainable in weighing module form.
Tension Link – The tension link are compatible with applications like winching, hanging scales, crane weighing scales and lifting systems. This kind of load cell offers superior accuracy at high capacity weighing. This type of cell has openings at either end to enable for quick link to shackles, wire rope, D links or some other rigging. Tension link load cells give a rugged design for potential to deal with side loading.
Torsion Ring – Torsion ring certainly are a fairly new concept in design and offer an outstanding low profile solution for an array of weighing applications. Unlike standard compression load cells, which could readily suffer from off-axis loading problems, torsion rings are loaded via 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 up to 3 or 4 degrees can be tolerated without loss in performance. Proprietary mounting modules, which offer excellent versatility, are designed for both process weighing applications and platform scales.
Weighing Modules – Weighing module generally includes a 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 definitely 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 may be linked to devices via cable. One of many issues with any weighbridge or floor scale is the chance of damaged cables. Utilizing the ifegti technology, wireless, load cells are now being presented and can some day function as the industry standard. The suggestions above load cells are available in wireless format, although this technology comes at greatly increased price.
S Type – S type get their name off their shape, being the letter ‘S’. S type load cells can offer a digital output when utilized in either tension or compression and supply 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 employed in crane scales, hanging scales, hoist scales and many tension applications.
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