SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T06:33:08-06:00SparkFun ElectronicsCustomer #1605764 on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Customer #1605764urn:uuid:6c4c586c-0f1b-2d5e-d60c-f7f343b9a0f12020-06-26T12:13:26-06:00<p>I have a small bar load cell, it clearly has mounting screw holes on both ends to mount plates for stability on bottom and measuring of items larger than the cell on top. I recently purchased this button load cell and find only mounting holes on the bottom. Anyone have a link to some info on how to mount anything to the top side to weigh things bigger than a dime?</p>
GPfromFL on SEN-13331 - Load Cell - 50kg, Disc (TAS606)GPfromFLurn:uuid:58ebe8f4-c32a-a248-1778-9e3f9f16d9a52018-05-29T18:34:52-06:00<p>I have a pre-purchase question: Is the 50kg limit distributed across the four cells, or is it a cumulative max. of 50kg? I'd like to build a platform scale to measure liquid volume in a 30-gallon stainless steel kettle. Ideally, I'd like to have +/- 1-quart accuracy. So, a 20lb vessel with 240lb of water in it is about 260lb, or roughly 109kg. In other words, is it reasonable to expect a platform with four 50kg-rated load cells to perform under an expected load of 109kg?</p>
GraysonR on SEN-13331 - Load Cell - 50kg, Disc (TAS606)GraysonRurn:uuid:0d2347ab-b6d1-fecc-5369-080f371446552017-06-03T09:56:22-06:00<p>50 kg? I'm assuming that means it can handle the force of a mass of 50kg at the acceleration of gravity, or 490 Newtons of force. Is that right?</p>
Customer #742205 on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Customer #742205urn:uuid:c769f8b3-04b5-c76a-e238-370e077c1bfc2015-12-27T04:08:52-07:00<p>does it affects the weight result if I attach a magnet on it ?</p>
MarkSpeir on SEN-13331 - Load Cell - 50kg, Disc (TAS606)MarkSpeirurn:uuid:a6eaa33c-3d44-2f24-1fe8-37a81616b99b2015-08-08T19:55:20-06:00<p>I ended up buying the load cell from another company. What I find odd is that Sparkfun's load cell selection is for large load load cells. It is almost like they have fallen victim to the "bigger is better" mentality. There isn't, or at least wasn't (I haven't checked again), a single small load cell among the selection. Large load cells have their place, but I suspect that most hobbyists would rather have the smaller cells.</p>
t00thPIK on SEN-13331 - Load Cell - 50kg, Disc (TAS606)t00thPIKurn:uuid:0e314c30-8693-1797-a711-67f2c812ae6b2015-08-08T02:55:24-06:00<p>I know you probably want to source all the components from a parts supplier like Sparkfun, but have you considered buying a set of digital scales and salvaging the load cells from them? I have a Brevill Multi Measure digital scale that retails for about $70. It measures 1gram accuracy.
Just a thought :)</p>
Customer #699605 on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Customer #699605urn:uuid:56037839-081c-8393-8bbc-e64fc34210242015-08-05T10:08:36-06:00<p>What is the milivolt to force equation for this cell?</p>
Customer #699605 on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Customer #699605urn:uuid:26984bbc-28e0-e200-f6ba-dd00eadee6a42015-08-03T14:05:21-06:00<p>If I use this cell with the amp board, can I read the data using a voltmeter?</p>
Customer #694220 on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Customer #694220urn:uuid:34c146a8-d327-3be0-5534-ed3532f1525d2015-06-23T16:19:58-06:00<p>Why not use a full-bridge for your Wheatstone bridge?<p>http://www.ni.com/white-paper/3432/en/</p><p>This is designed to mitigate the error that comes up with temperature change.</p></p>
Customer #223835 on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Customer #223835urn:uuid:6273a0a4-8c51-2ac0-66c3-b4898fff90d12015-06-19T15:59:57-06:00<p>This is exactly the type of sensor I've been looking for (many months) but for $75 of equipment there is still a 10% error range because it lacks temperature compensation. That's killing me. You could add a reference sensor (that would have no weight but would measure variations due to temperature, etc) but that would require it's own whetstone bridge cricuit i beleive(?) so another $75 (?). This still doesn't appear to fit my needs but i want it to</p>
MarkSpeir on SEN-13331 - Load Cell - 50kg, Disc (TAS606)MarkSpeirurn:uuid:d0c4d5d8-9792-89ba-565f-84f55a3754e32015-06-17T11:22:27-06:00<p>2 km of four strand wire for $57?! Screw the load cell! I'll take two!</p>
M-Short on SEN-13331 - Load Cell - 50kg, Disc (TAS606)M-Shorturn:uuid:0f926d6a-cfd6-b075-f43c-3e768b4bb89e2015-06-15T13:40:26-06:00<p>Sigh, no matter how hard you try you still end up with typos... Fixed.</p>
MarkSpeir on SEN-13331 - Load Cell - 50kg, Disc (TAS606)MarkSpeirurn:uuid:aa82f3bd-8640-60e4-cd0f-467c5a01bff02015-06-15T12:54:12-06:00<p>Thanks for the reply! That was the information I was looking for. Now that I know, it seems obvious, but before I was struggling to understand load cell ratings.<p>I ended up ordering the 10 kg wide bar load cell. :/ Seems that may have been a mistake as well...</p></p>
Apothus on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Apothusurn:uuid:69204a4a-8731-262c-9aab-2a5ea8b976e42015-06-15T01:05:49-06:00<p>to get 1g accuracy you need 1/50000 of the full scale which is 0.002%.
Looking at the datasheet the combined error (accuracy) of this load cell is +/-0.05% So you would struggle to get accurate and repeatable results with such a high range load cell. Try looking for something a bit smaller, a 5kg load cell of the same brand would be a lot more accurate.</p>
MarkSpeir on SEN-13331 - Load Cell - 50kg, Disc (TAS606)MarkSpeirurn:uuid:892ca57d-8de1-6cc9-476f-c6837a5ff0e52015-06-13T13:16:24-06:00<p>What is the resolution? I do a lot of baking and need at least 1 gram resolution. I've been wanting to make my own scale for quite some time.</p>
Customer #407771 on SEN-13331 - Load Cell - 50kg, Disc (TAS606)Customer #407771urn:uuid:c7d04eed-932a-11fc-d913-800900412c8f2015-06-12T20:14:23-06:00<p>2000m Wire?
I guess that makes this item a bargain. ;)</p>