What Set Temperature Achieves 900C Without Controller Offset?

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To achieve a set temperature of 900C in a furnace with a measured temperature of 909.2C and no offset option in the controller, one must account for the deviation of -9.2C. Users are encouraged to refer to the oven and controller datasheets, as well as the manuals, for potential calibration procedures. It's crucial to verify the accuracy of the temperature measuring device being used. One suggested approach is to conduct experiments to create a lookup table that correlates the desired temperature with the actual behavior of the furnace. The discussion highlights the need for practical experimentation in the absence of direct calibration options.
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How to incorporate deviation -9.2C in furnace, while its measured temperature is 909.2C and Display temperature is 900. if there is no option of offset in controller. What will be the set temperature to achieve 900C.
 
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Welcome to PF.

Can you post datasheets for the oven and controller? Do you have the Owners Manual and Service Manual for both? If so, there is probably some calibration procedure listed.

Also, what other temperature measuring device are you using to sense the "measured temperature"? Are you sure it is accurate?
 
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Dear berkeman,

Find attachment for reference.
CALIBRATION.jpeg
 
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kamran_chemist said:
How to incorporate deviation -9.2C in furnace, while its measured temperature is 909.2C and Display temperature is 900. if there is no option of offset in controller. What will be the set temperature to achieve 900C.
This seems too simple, I must not understand something.

You have a thermometer you trust. You can't calibrate your controller. So, why don't you be the controller. Do some experiments and make a lookup table. Ask for the temperature that corresponds with the behavior you want.

PS: If you choose to have a lottery, I've got dibs on 890.8C.
 
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