how do i scale tc-120 using Visual Basic

[jkho]

I'm using Visual Basic 6.0, FP-1000 and the FP-TC-120 to read type-t thermocouples. I'm unable to get the actual temperature value using the thermoelectric voltage to temperature conversion equation, nth order polynomial. Does the TC-120 use a different scale to convert voltage to temperature?

There's a way of importing the fieldpoint ".iak" file into LabWindows/CVI, but my application using Visual Basic doesn't allow me to do so.

[Aaron_G]

When a FP-TC-120 channel is configured for temperature measurement and a thermocouple type is specified, the module linearizes the measurement according to the NIST-175 standard for thermocouple characteristics which is based upon ITS-90.

Depending upon what communications methodology you are using from Visual Basic, you may or may not need additional scaling (presuming the channel is configured for temperature and not voltage measurements). If you are using OPC, then the data is already scaled and you do not need to do anything with it. If you are using the FieldPoint Optomux commands, you should scale the data as described in Appendix B of the FP-1000/1001 Programmers Reference Manual.

Regards,
Aaron