All Questions
Tagged with strain-gage adc
10 questions
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71
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Strain gauge - wheatstone bridge: sensitivity to temperature changes
I have made a strain gauge measurement system using 3-wire quarter-bridge configuration as depicted here:
The bridge is connected to ADC (ADS1262) with ratiometric connection. R1, R2 and R3 sit on ...
- 89
1
vote
1
answer
685
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Wheatstone Bridge strain gauge thermal compensation design
I'm designing a full Wheatstone bridge for measuring the bending strain in a steel bar.
I have a circuit available to me that uses an ADS1232 to measure the output of the wheatstone bridge.
When ...
- 25
0
votes
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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
2
votes
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515
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AD7730 calibration failure
EDIT: The exact issue is this, the ADC has a gain register (set during internal FS calibration and again at System FS calibration) and an offset register set during system zero calibration. The ...
- 31
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1
answer
396
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Negative differential to instrumentation amplifier causing problems
I am using a pair of strain gauges to make a weight scale. The strain gauges are the three-wire type that you can by on Amazon or Sparkfun. The strain gauges form a full wheatstone bridge, whose ...
- 115
1
vote
1
answer
448
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Which one is the better way to feed analog input to my ADC?
I am planning to use an AD7730L analogue to digital converter (ADC) chip, with a quarter bridge circuit. Everything was on the track until I realised something, which indicated that things were ...
- 73
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70
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Why does this seem like a strange way of connecting a bridge circuit to the ADC?
I was planning to hook up a quarter bridge circuit to the AD7730LBR Analogue to Digital Converter that I bought. I was having a look at a "Load_Cell_Schematic" provided by this webpage (the download ...
- 73
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votes
2
answers
1k
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Using DAC to create reference in a wheatstone bridge for strain gauge?
I am designing a circuit where a microcontroller can measure the load forced upon a load cell with strain gauges, making a half bridge.
A traditional Wheatstone bridge looks like this:
Resistors ...
- 537
3
votes
2
answers
4k
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Weird reading from NAU7802 ADC
I'm using an NAU7802 ADC which has a built in amplifier. I'm trying to use it to read a strain gauge but it keeps giving me weird readings.
Eventually I resorted to shorting the two differential ...
- 1,193
2
votes
1
answer
1k
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Connecting the Shield of a strain gage cable connector to PCB with ADC
I have a half-bridge strain gage sensor (pre-assembled product) with a 30cm cable, which I am trying to interface with my PCB containing a 24-bit ADC.
The connector at the cable end toward the ADC (i....
- 4,972