All Questions
Tagged with load-cell measurement
16 questions
2
votes
2
answers
65
views
Tension load cell options
I'm designing something similar to an electronic hanging scale (think a heavy object on the bottom, with a scale attached immediately above it). I am not that familiar with what the most typical way ...
- 135
2
votes
1
answer
546
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How do I read a load cell just with this data?
I have a load cell (capability = 23 kg or 50 lb.) Its output is 2 mV/V. I have read that that means 2 mV per each excitation volt.
The power connection of this load cell is +15V-GND, so 0.002 * 15 = ...
- 43
1
vote
0
answers
433
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HX711 zero factor
I have three load cells (YZC-1B). These load cells' capacity is 50 kg. I guess I use Bogde's HX711 library.
In monitor, the zero factor for the first two load cells is 8,000,000, but for the last load ...
- 33
0
votes
2
answers
106
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Does shunt calibration of a sensor also correct for zero error?
In the datasheet for a load cell (shown below), it says that shunt calibration data is given, also they have mentioned the zero balance. Does the shunt calibration consider zero balance? Meaning, do I ...
2
votes
0
answers
364
views
Does creep always occur with load cells, or is there an optimum weight capacity?
I want to make a scale which I will place under a wood stove (downdraft gasifier) to measure the amount of wood that goes into the wood stove. The amount of wood which is being measured will be ...
- 21
0
votes
0
answers
694
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Loadcell strain gauge with 10 V excitation
I am designing loadcell (spec) measuring using 24-bit adc (MCP3561) with excitation 10 V. But I couldn't find the reference design for 6-wire loadcell that its sense pins connect to ref+ pin of ADC. ...
- 61
0
votes
0
answers
613
views
How to connect bathroom scale (arduino+hx711+spark load connector)
Im a new user in the electronic world. I tried to hack my bathroom weight scale but no success. There is a great tutorial which I followed:
https://www.youtube.com/watch?v=iywsJB-T-mU
my parts:
...
- 121
0
votes
1
answer
463
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How to measure weight at end of arm
I have a setup where I need to measure the weight at the end of an arm.
The arm is clamped between two pieces of aluminum at one end.
The Sensor S is mounted a short distance (5cm?) from the aluminum ...
- 153
1
vote
0
answers
173
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Why do we need voltage stabilizion in bridge measuring system with ratiometric connection?
i found in many weight scale reference designs that they use either low noise linear regulator or voltage reference for voltage stabilization.
Why do we use them if ratiometric design cancel the ...
- 33
0
votes
1
answer
1k
views
Can I measure large force using series FSR?
Is it possible to measure large force using multiple Force Sensitive Resistors in a series? Will I have to stack the resistors up? Will the measurement be reliable if I place them side by side?
I ...
- 1,191
1
vote
2
answers
4k
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How to hook up a load cell to an Instrumentation amplifier correctly
I am trying to get load cells connected to an instrumentation amplifier. The load-cells I have are extremely similar to the ones here https://www.sparkfun.com/products/10245. They have 3 wires coming ...
- 507
1
vote
1
answer
8k
views
What is the difference of a loadell input and output resistance?
I am trying to understand the specifications of a load cell and there are the input and output resistance as you can see here, it says 1090±10Ω for input resistance and 1000±10Ω of output resistance.
...
- 293
5
votes
1
answer
7k
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Does this loadcell's creep mean that I can not let a constant load on the loadcell?
I want to build a connected scale that I can set coffee powder (for example) on it and check over the internet how much of coffee I still have without going to see it.
Usually all loadcells have a ...
- 293
6
votes
2
answers
2k
views
How to measure weight?
Last few months I am working on personal project -- I want to measure weight of beehive during the year and then save the results. Beehives has usually from 100 to 200 kg and during one day, the ...
- 957
2
votes
2
answers
1k
views
Differential ADC for Load Cell Measurement or In. Amp?
I've been tasked to design a circuit which measures the peak impact force of a crimping press on a terminal. I am using a load cell under the press as a sensor. The load cell outputs 20mV (...
- 5,439
12
votes
4
answers
17k
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Digital bathroom scale circuit - how it works?
I'd like to understand how the digital bathroom scales work. I was able to gather that there are four three-wire load cells connected into the Wheatstone bridge as suggested below. The load cells have ...
- 299