{"id":1321,"date":"2021-05-20T04:09:00","date_gmt":"2021-05-20T09:39:00","guid":{"rendered":"https:\/\/tutorials.probots.co.in\/?p=1321"},"modified":"2021-05-19T23:29:46","modified_gmt":"2021-05-20T04:59:46","slug":"force-sensors-buying-guide","status":"publish","type":"post","link":"https:\/\/tutorials.probots.co.in\/force-sensors-buying-guide\/","title":{"rendered":"Force Sensors Buying Guide"},"content":{"rendered":"\n

In this article, I will give you an idea of how to buy the right force sensor for your Applications.<\/span><\/p>\n\n\n\n

What are Force Sensors??<\/strong><\/span><\/h2>\n\n\n\n

Force sensors<\/a> are devices that are designed to translate applied mechanical forces, such as tensile and compressive forces, into output signals whose value can be used to reflect the magnitude of the force.<\/span><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Force sensors are available in a wide range of sizes and can be used to detect forces from fractions of an ounce to hundreds of tons. They are used in a wide range of products and applications such as bathroom scales, musical instruments, medical applications, automobiles to detect seat occupancy, and process control in manufacturing facilities, to name a few of the many uses for these devices.<\/span><\/p>\n\n\n\n

Types of Force Sensors<\/span><\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Several different types of force sensors exist, each of which makes use of different technologies to sense the magnitude of a given force and create an output signal. The most common types of force sensors include:<\/span><\/p>\n\n\n\n

Load Cells<\/span> & Strain Gauges<\/span><\/strong><\/h2>\n\n\n\n
\"\"\/
Image Source: Real Pars<\/figcaption><\/figure>\n\n\n\n

The above Gif shows how the strain Gauge Load cell operates<\/span>. Strain<\/strong> gauge load<\/strong> cells usually feature four strain gauges<\/strong> in a Wheatstone bridge configuration, which is an electrical circuit that balances two legs of a bridge circuit. The force being measured deforms the strain<\/strong> gauge in this type of load cell<\/strong>, and the deformation is measured as change in electrical signal.<\/span><\/p>\n\n\n\n

Force Sensing\/Sensitive Resistors (FSRs)<\/strong><\/span><\/h2>\n\n\n\n
\"\"
Image Source: Last Minute Engineers<\/figcaption><\/figure><\/div>\n\n\n\n

FSR <\/strong>is basically a resistor that changes its resistive value depending on how much it has been pressed. When there is no pressure, the sensor looks like an infinite resistor (open circuit). The harder you press on the head of the sensor, the lower the resistance between the two terminals will be, but as you remove the pressure it will return to its original value.<\/span><\/p>\n\n\n\n

Force sensors come in different sizes and with different measuring ranges, here are few steps you can go through to find the best force sensors suitable.<\/span><\/p>\n\n\n\n

We sell different kinds of force sensors<\/a> for measuring different ranges of weights\/force. For example from 0-500gms  up to 30kg force with different shapes.<\/span><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Before getting into the detailed steps of the force sensor selection, I will give you a brief idea of what unique force sensors will sell.<\/span><\/p>\n\n\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
SL No.<\/th>Name<\/th>Measurable Force<\/th>Specifications<\/th>Links<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>0-500gm Force & Pressure Sensor<\/td>0 to 500gms<\/td>Thickness: <0.25mm
\nPrecision: \u00b12.5%(85% measuring range)
\nRepeatability: <\u00b15.8(50% load)
\nLifespan: >1million times<\/td>		Visit<\/a><\/td>\n<\/tr>\n
2<\/td>0-2 kg Force & Pressure Sensor<\/td>0 to 2 Kg<\/td>Thickness: <0.25mm
\nPrecision: \u00b12.5%(85% measuring range)
\nRepeatability: <\u00b15.8(50% load)
\nLifespan: >1million times<\/td>		Visit<\/a><\/td>\n<\/tr>\n
3<\/td>0-5kg Force & Pressure Sensor<\/td>0 to 5 Kg<\/td>Thickness: <0.25mm
\nPrecision: \u00b12.5%(85% measuring range)
\nRepeatability: <\u00b15.8(50% load)
\nLifespan: >1million times<\/td>		Visit<\/a><\/td>\n<\/tr>\n
4<\/td>0-10 kg Force & Pressure Sensor<\/td>0 to 10 Kg<\/td>Lifespan: >1million times
\nInitial Resistance: >10M(no load)
\nResponse Time: <1ms
\nRestore Time: <15ms<\/td>		Visit<\/a><\/td>\n<\/tr>\n
5<\/td>0-20 kg Force & Pressure Sensor<\/td>0 to 20 Kg<\/td>Thickness: <0.25mm
\nPrecision: \u00b12.5%(85% measuring range)
\nRepeatability: <\u00b15.8(50% load)
\nLifespan: >1million times<\/td>		Visit<\/a><\/td>\n<\/tr>\n
6<\/td>0-30 kg Force & Pressure Sensor <\/td>0-30 Kg<\/td>Thickness: less than 0.60mm
\nResponse point: less than 200g
\nTest voltage: dc3.3v typical
\nResponse time: less than 1ms
\nRecovery time: less than 15ms<\/td>		Visit<\/a><\/td>\n<\/tr>\n
7<\/td>20 g - 6kg Force & Pressure Sensor <\/td>20g - 6Kg<\/td>Trigger: 20 g, Default Resistance <200 k\u03a9
\nThickness: 0.4mm
\nNot trigger resistance: > 10M\u03a9
\nActivation time: <0.01s
\nDelay: +10%, (RF+-RF-)\/FR+,1000g force<\/td>		Visit<\/a><\/td>\n<\/tr>\n
8<\/td>20g - 10 kg Force & Pressure Sensor <\/td>20g - 10 kg<\/td>Thickness: 0.45mm
\nNot trigger resistance: > 10M\u03a9
\nActivation time: <0.01s
\nDelay: +10%, (RF+-RF-)\/FR+,1000g force
\nResponse time: < 10ms<\/td>		Visit<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n

Define Your Application and Operating Environment<\/span><\/strong><\/h2>\n\n\n\n

Before buying a force-torque sensor, you need to decide what tasks you are going to use it for. Of course, you may use the sensor for other tasks later on, but we’ve got to start somewhere.<\/span><\/p>\n\n\n\n

First, ask yourself some questions about your application:<\/span><\/strong><\/p>\n\n\n\n