Hi!
We don´t have the MAX31865 in FC.
Therefore I try to convert the Arduino program form here: https://www.aeq-web.com/pt1000-temperat ... r/?lang=en
and when I managed to get the program working i will build the Amplifier. I have converted the program to Flowcode but something is wrong.
When I simulate and try to adjust the pot to Temp 21,3 degre and Volt to 0,92 it doesn´t match the pickture in the examble.
Will someone have a look and maybe help?
Br Jorgen
PT1000!
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jgu1
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medelec35
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Re: PT1000!
Hi.
I entered the formula within excel and the flowchart simulation matches it.
If I was you, I would build the hardware, and follow the calibration procedure.
Then if it does not work, look into it deeper.
If you look at the video 19 mins 08 seconds your flowchart and the video values match.
Then if you carry on watching the video at 26:08 an offset is added of -27.6 which then makes your flowchart matches the one in the image.
I entered the formula within excel and the flowchart simulation matches it.
If I was you, I would build the hardware, and follow the calibration procedure.
Then if it does not work, look into it deeper.
If you look at the video 19 mins 08 seconds your flowchart and the video values match.
Then if you carry on watching the video at 26:08 an offset is added of -27.6 which then makes your flowchart matches the one in the image.
- Attachments
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- PT1000.xlsx
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Martin
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jgu1
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Re: PT1000!
Hi Martin!
Thank you very much Martin, great job you done. I follow your advice. I only want to know that I have done the conversation from Aruino Ide to FC9 correct.
I get from a friend some of these PT1000 , maybe I can use these, and prefer FC.
I will perform a test.
Jorgen.
Thank you very much Martin, great job you done. I follow your advice. I only want to know that I have done the conversation from Aruino Ide to FC9 correct.
I get from a friend some of these PT1000 , maybe I can use these, and prefer FC.
I will perform a test.
Jorgen.
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medelec35
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Re: PT1000!
As Flowcode matches the spreadsheet and what's shown in the video, the conversion does look correct.
Well done with the conversion.
Martin
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jgu1
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Re: PT1000!
Hi Martin!
I have perform a test. Build the amplifier and "calibrated" the sensor. It work nice
I managed to get max. 135 gr. by supplying the amplifier with 5V. After to Then I try to increase the voltage to 6V and measured the output on the amplifier, cause of the arduino the must max. be 5V. After trying to change the resistors in the setup I could see no greater gain could be obtained from the amplifier. So supply the amplifier with 6V the output can max be 5V. Then recalibrate and now I could see the temp is max223gr.
And compared to, ok, well, an analog thermometer the accuracy seemed good.
I have now tested, but I think when I need a thermometer for higher temperature over 100 gr. I will use your Max31855 component
Only for info
Br Jorgen
I have perform a test. Build the amplifier and "calibrated" the sensor. It work nice
I managed to get max. 135 gr. by supplying the amplifier with 5V. After to Then I try to increase the voltage to 6V and measured the output on the amplifier, cause of the arduino the must max. be 5V. After trying to change the resistors in the setup I could see no greater gain could be obtained from the amplifier. So supply the amplifier with 6V the output can max be 5V. Then recalibrate and now I could see the temp is max223gr.
And compared to, ok, well, an analog thermometer the accuracy seemed good.
I have now tested, but I think when I need a thermometer for higher temperature over 100 gr. I will use your Max31855 component
Only for info
Br Jorgen