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 searching for the proper load cell for your application. I have listed probably the most common found today as well as their uses.
Single Point – Single point are some of the cheapest and most popular type on the market today. Due to their price and reliability, they can be found in most kinds of retail scales, counting scales, medical scales, parcel scales and postal scales. This type 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 a long time and are generally the business standard for the majority of high capacity, compression applications. Canister type load cells are used for Rotary Torque Sensor. This type of cell features a button on the top and bottom side and can be utilized 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 kind is able 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 is additionally 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 supplies a perfect 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 making them particularly ideal for weighing systems with mixers, blenders and agitators. This sort are really durable but could become costly and cumbersome to mount above 10,000kg. This kind of cell can also be available 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 Button Load Cell. This kind 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 provide a rugged design for potential to deal with side loading.
Torsion Ring – Torsion ring really are a relatively recent concept in design and supply a great 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 by way of a centrally located annular ring. By using a central floating pin to deliver load for this ring, optimum load introduction is assured and off-axis loads up to 3 or 4 degrees could 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 consists of 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 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; they may be linked to devices via cable. One of many problems with any weighbridge or floor scale is the possibility of damaged cables. Utilizing the latest technology, wireless, load cells are actually being presented and can one day become the industry standard. All of the above load cells are actually obtainable in wireless format, although omqzxd technology comes at greatly increased price.
S Type – S type get their name off their shape, being the letter ‘S’. S type load cells provides 3 Axis Force Sensor when found in either tension or compression and supply superior side load rejection. This type of cell has two female threaded fixing points, top and bottom were eye bolts or thread rod ends could be attached. This type are employed in crane scales, hanging scales, hoist scales and a lot tension applications.