We all want a high quality weighing scale but it is difficult to know if a scale will weigh accurately, be dependable and also last for a long time just by looking at it. You can get some useful information from the looks such as whether the material of construction is suitable for your application or not and maybe if you are sharp eyed you may also be able to discern the quality of workmanship that is on evidence. But to know for sure if a scale is of great quality you need to know about the quality of strain gauges used in the scale.
Though it is not possible for lay persons to inform themselves of all the technical details of how digital scales function but they can get an idea of the science underlying the product. And the science is pretty simple and it can be understood if you remember some of the physics you learned in school. You would know that when electric current passes through a resistor it encounters resistance which can be measured very accurately. A strain gauge is like that resistor except that the amount of resistance it offers varies with the amount of stress being placed on the strain gauge. If it is encountering tensile stress then its resistance will go up and if it is encountering compressive stress its resistance will go down. By measuring the change in resistance the amount of strain can be known and that allows the weight of the object placed to be deduced. As you can see this makes the strain gauge the very heart of the weighing scale.
These are available in various materials and they are different because different types of weighing scales operate with different weight range and sensitivity. The strain gauge has a range where its performance is suitable for accurate weight measurement. And the floor scale or the counting scale that you buy if it has a quality strain gauge will give you years of trouble free and accurate service because the rest of the engineering involved is much simpler. You can see the latest digital scales using high quality strain gauges at www.buyfloorscale.com.
About Author :
Mark Floyd has over 15 years experience in the digital scales industry. He has been a part of it, as better products have been launched over the years & have changed how weight is measured around the world. You can know more about floor scale and counting scale at his web site www.buyfloorscale.com.
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