How the calibration of temperature controller is done ?

znatok said:

You should take a reference device that has better precision compared to the one you want to calibrate.
For automated calibration you should use some PC based A/D device (Like this one we use in our manufacturing process:
SUB-20 Multi Interface USB Adapter USB to I2C SPI GPIO RS232 RS485 Ir. It has 8 A/D channels and PWM output for reference signal)
If you are talking about industrial devices there is a special certificated laboratories witch performs calibration and certification.
What exactly do you want to calibrate and for what precision?

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Raza said:

Here is a simple and cost effective, yet nice calibrating process.
**broken link removed**

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Raza said:

Temperature controllers do not need calibration but the Temperature Sensors. Here is the link for complete procedure.
**broken link removed**
But if you want multi function Temp calibrator you can select one from different suppliers according to you r need.
Here are products.
Temperature Controller Calibration-Temperature Controller Calibration Manufacturers, Suppliers and Exporters on Alibaba.com
For weighing bridge calibration you need Weight Cell calibrator and have to know the type of cell (the manufacturer)
See here some calibrator references.
Load Cell Calibrator | Load Cell Tester | Load Cell Simulator - Load Cell Central
VFD
All these procedures need hands on experience and at the same time test and measure equipment.

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