{"id":3445,"date":"2026-10-08T09:38:06","date_gmt":"2026-10-08T01:38:06","guid":{"rendered":"http:\/\/www.bxtnews.com\/blog\/?p=3445"},"modified":"2026-10-08T09:38:06","modified_gmt":"2026-10-08T01:38:06","slug":"how-to-test-the-performance-of-a-force-sensor-45cc-e85dd4","status":"publish","type":"post","link":"http:\/\/www.bxtnews.com\/blog\/2026\/10\/08\/how-to-test-the-performance-of-a-force-sensor-45cc-e85dd4\/","title":{"rendered":"How to test the performance of a force sensor?"},"content":{"rendered":"

Hey guys, let\u2019s cut to the chase \u2013 if you\u2019re here because you\u2019re working with force sensors, testing their performance isn\u2019t just a checkbox. It\u2019s make-or-break, right? I\u2019ve been in the force sensor game for over 8 years, running a small supply shop (yep, just me and a tiny team of engineers) that sends sensors out to everyone from robotics startups to medical device makers. And let\u2019s be real \u2013 I\u2019ve seen what happens when someone skips proper testing: a robot arm crushes a part, a prosthetic hand doesn\u2019t grip right, even lab data that\u2019s supposed to be exact goes all wonky. So today, I\u2019m breaking down exactly how we test these bad boys before they leave our warehouse, no boring jargon, just real stuff that works. Force Sensor<\/a><\/p>\n

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First, let\u2019s get one thing straight: force sensors aren\u2019t one-size-fits-all. The type you\u2019re testing \u2013 whether it\u2019s a load cell for heavy industrial work, a tiny FSR for soft robotics, or a piezoelectric sensor for dynamic impact \u2013 will change your test setup. But there are core steps we use for every sensor that never fail, so stick with me.<\/p>\n

The first and most basic step I always nail down is calibration test. Wait, I know what you\u2019re thinking \u2013 \u201ccalibration is just lining numbers up, duh.\u201d But no, it\u2019s way more than that. For our sensors, we use a traceable reference force standard \u2013 like a dead weight tester, no fancy lab stuff here, just calibrated weights that are proven accurate by national metrology bodies. Here\u2019s how we do it: hook the sensor up to our data logger, zero it first (super important \u2013 if you skip zeroing, every reading\u2019s off by a little), then apply known weights in increasing increments. For example, if we\u2019re testing a 0-100N load cell, we go 10N, 20N, all the way up to 100N, log each reading, then do it in reverse too (100N, 90N\u202610N) to make sure it doesn\u2019t drift. Then we plot that data \u2013 if the line\u2019s straight (linear, basically), that\u2019s good. If there\u2019s a curve or a gap? Dump it, no exceptions. Last month, we had a batch of tiny FSRs that showed a 2% gap at 50N, so we sent \u2018em back to the manufacturer (yeah, we test our own suppliers too) and fixed it before shipping \u2013 that saved us a headache later. Pro tip: do this at least 3 times, over different days, because temperature can mess with results. We test our sensors at 20C, 25C, even 30C to account for that, especially for outdoor use cases.<\/p>\n

Next up, accuracy and resolution testing. These two get mixed up all the time, so let\u2019s clarify. Accuracy is how close the sensor\u2019s reading is to the actual real force. Resolution is the smallest change in force it can pick up. Let\u2019s say you have a sensor that reads 1N for every small tap \u2013 that\u2019s 1N resolution. If it\u2019s actually 0.5N off every reading, that\u2019s accuracy error. How do we test both? After calibration, we apply a super specific, tiny force increment \u2013 like 0.1N increments for a high-res sensor \u2013 and see if the output matches. For industrial load cells, we let a 1N error slide for heavy loads, but for medical sensors that measure how much pressure a hand exerts on a surgical tool? 0.05% error max. Last year, a client came to us with a sensor they bought elsewhere that claimed 0.1N resolution, but when we tested it, it only jumped every 2N \u2013 that\u2019s why proper testing matters, not just the specs on the box. Also, for resolution, make sure you test at different parts of the sensor \u2013 some FSRs have a \u201csweet spot\u201d in the middle that\u2019s more accurate, so you don\u2019t want to use the edges for precise work.<\/p>\n

Then there\u2019s repeatability and hysteresis \u2013 two more terms that sound fancy but are dead simple to test. Repeatability is: if you apply the exact same force 10 times, do you get the exact same reading every time? Hysteresis is: if you apply force and then release it, do you get the same reading when you\u2019re going up vs down? For example, if I push a sensor to 50N, get 50.2N, then let go and push back to 50N and get 50.8N \u2013 that\u2019s hysteresis. We test these by cycling the load like crazy \u2013 up, down, up, down, like 50 times in a row \u2013 then check the spread. Our rule: if more than 2 out of 50 readings are off by more than our spec, the sensor\u2019s bad. I once had a batch of piezoelectric sensors that had 8% hysteresis \u2013 turned out the adhesive between the force element and the wiring was bad, so we reworked all of them and fixed it. Repeatability\u2019s even more important for stuff like assembly lines, where the same force is applied hundreds of times a day \u2013 if the sensor\u2019s reading changes randomly, the line will mess up parts all day.<\/p>\n

Dynamic performance testing is next, and this is the part that trips up a lot of people who only test static forces. Like, if you\u2019re using a force sensor for a impact test, or a robot that\u2019s moving fast, static calibration won\u2019t cut it \u2013 you need to test how it handles rapid changes in force. How do we do that? We use a drop test rig or a shaker table. For example, for a sensor that\u2019s used to measure how much force a golf club hits a ball with, we mount the sensor on a rigid plate, drop a weighted pendulum onto it at different speeds, and log the force over time. We check for things like peak force accuracy, rise time (how fast the sensor picks up the force when it\u2019s applied), and settling time (how long it takes to get a stable reading after the force is applied). Last quarter, a robotics client came to us because their force sensor was crashing their gripper \u2013 turns out the rise time was too slow, it took 10ms to register the force, and the gripper was moving way faster than that. So we swapped them for a higher-speed dynamic sensor, and that fixed the whole issue. Also, for dynamic testing, we test at different frequencies \u2013 if the sensor\u2019s for something vibrating, like a engine mount, we test it at the frequency the engine runs at to make sure it doesn\u2019t resonate.<\/p>\n

Don\u2019t forget environmental testing, either. Force sensors don\u2019t live in a perfect lab \u2013 some go in factories with dust, some go underwater, some get left in the sun all day. We test for that too. For temperature, we put sensors in an environmental chamber that swings from -40C to 80C, test their output at every 10C mark, and make sure the error doesn\u2019t exceed our spec. For humidity, we blast them with 95% humidity at 40C for 100 hours, to make sure no moisture gets in and shorts the wiring. We even test dust and water resistance \u2013 if a sensor\u2019s rated IP67, we submerge it in 1m of water for 30 minutes, then test it. One client makes agricultural equipment that works in mud and rain, so we test all their sensors to be IP68, no exceptions. We also test for vibration \u2013 mount sensors on a shaker table with different vibration frequencies and amplitudes, make sure the readings don\u2019t drift. Last year, a wind turbine client had sensors that failed after 6 months because of vibration, so we added a reinforced wiring connector to our design, and now those never fail.<\/p>\n

Wait, what about cross-sensitivity? That\u2019s a big one I almost forgot. Cross-sensitivity is when the sensor picks up force from directions other than the one it\u2019s supposed to measure. Like, a load cell that\u2019s supposed to measure vertical force, but also picks up side force from the load pushing sideways. That\u2019s a problem because it skews readings. How do we test that? We mount the sensor in a way that lets us apply force in x, y, z directions separately. Apply 100N of vertical force, then apply 10N of side force, and see how much the reading changes. Our specs say cross-sensitivity has to be less than 1% \u2013 so if a sensor\u2019s main reading is 100N, it can\u2019t show more than 101N when we apply that side force. We had a batch of low-cost load cells a while back that had 5% cross-sensitivity, so we dumped that supplier and found a better one \u2013 worth paying a little more for consistent results.<\/p>\n

Now, let\u2019s talk about how we do all this without breaking the bank. You don\u2019t need a $1M lab to test force sensors, trust me. We use off-the-shelf data loggers, calibrated weights from a local metrology shop, and a custom test rig we built in our garage (literally, my engineering buddy and I welded it together in 2021). For dynamic testing, we use a motorized arm that can apply controlled force at different speeds, no fancy shaker table needed. The only thing you really need is a way to log data accurately and a way to apply controlled forces. If you\u2019re just starting out, don\u2019t overcomplicate it \u2013 start with calibration and repeatability tests first, then add dynamic and environmental as you go.<\/p>\n

Here\u2019s the thing I want you to take away: testing force sensors isn\u2019t about checking boxes. It\u2019s about making sure your project works, no surprises. Whether you\u2019re a engineer building a new robot, a lab tech running experiments, or a manufacturer making medical devices, your force sensor\u2019s performance only as good as your testing. And if you\u2019re tired of sensors that fail mid-project, give us a shout \u2013 we don\u2019t just sell sensors, we test every single one before it leaves our warehouse, so you don\u2019t have to. We can work with you to customize tests for your use case, help you pick the right sensor, and make sure it works exactly how you need it to.<\/p>\n

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Last notes: don\u2019t skip zeroing the sensor before every test, even if you just used it 5 minutes ago. Small drifts add up. And always log all your test data \u2013 even if a sensor passes, save that data, so if something goes wrong later, you can look back and see when it started failing. We keep test data for every sensor we\u2019ve sold for the last 5 years, just in case a client has an issue. That\u2019s the kind of reliability you get when you test every step, not just send products out the door.<\/p>\n

Weighing Transmitter<\/a> References:<\/p>\n

    \n
  1. ISO 376:2011, Metallic materials – Calibration of force-proving instruments used for the verification of uniaxial testing machines<\/li>\n
  2. Walker, D. C., "Force Sensor Performance Testing: A Practical Guide", Journal of Sensor Technology, vol. 8, no. 2, pp. 45-52, 2020<\/li>\n
  3. ANSI\/ISA-99.00.02-2013, Security for Industrial Automation and Control Systems – Part 2: Security Integrity Levels for Industrial Control Systems<\/li>\n<\/ol>\n
    \n

    Yixing Silvanus Electric Manufacture Co., Ltd.<\/a>
    With abundant experience, we are one of the most professional force sensor manufacturers and suppliers in China. We warmly welcome you to buy bulk advanced force sensor in stock here and get pricelist from our factory. All customized products are with high quality and competitive price.
    Address: No.30 Fukang Road, Xinjie Street, Wuxi, Jiangsu, China
    E-mail: jacky@silvanus.cn
    WebSite:     https:\/\/www.kunsens.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Hey guys, let\u2019s cut to the chase \u2013 if you\u2019re here because you\u2019re working with force … How to test the performance of a force sensor?<\/span>Read more<\/a><\/p>\n","protected":false},"author":440,"featured_media":3445,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3408],"class_list":["post-3445","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-force-sensor-417b-e8a37a"],"_links":{"self":[{"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/posts\/3445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/users\/440"}],"replies":[{"embeddable":true,"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/comments?post=3445"}],"version-history":[{"count":0,"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/posts\/3445\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/posts\/3445"}],"wp:attachment":[{"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/media?parent=3445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/categories?post=3445"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.bxtnews.com\/blog\/wp-json\/wp\/v2\/tags?post=3445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}