thermopile

[1q2w]

labview is not allowing me to enter a maximum signal input range value of 1000 degrees celcius...I want to do this because the 10 junction  thermopile that i am using multiples the temperature reading by 10...for example a reading of 25 degrees will read 250...and labview does not allow values above 100..could you suggest any ammendments i can make to the attached block diagram to divide the thermopile reading by 10?? PLEASE HELP!!!

[Ben]

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@1q2w wrote:

labview is not allowing me to enter a maximum signal input range value of 1000 degrees celcius...I want to do this because the 10 junction  thermopile that i am using multiples the temperature reading by 10...for example a reading of 25 degrees will read 250...and labview does not allow values above 100..could you suggest any ammendments i can make to the attached block diagram to divide the thermopile reading by 10?? PLEASE HELP!!!

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I have to admit I never heard of that before reading your threads.

Are you sure it uses the same mapping as a standard TC?

If it does not hen the raw voltage shoould be measureed and apply the proper mapping.

Don't know if that helps,

Ben

[MikeParkin]

Hi 1q2w,

What thermopile are you using exactly? I think it would benefit both myself and Ben as then we can have a look at it ourselves. Would it possible for you to provide a link?

Ben rightly questioned the mapping of it so it would be interesting to see some specs.

[Henrik_Volkers]

You can read the thermopile voltage and the cold junction temperature (voltage) seperate and do the math by your own.

read the CJ temp

read the TP voltage (multiple times , filter) divide by 10

use the thermocouple reading vi to get the temperature

The TC formulars are somewhat buried, however quick drop is your friend 🙂