Apply Custom Scale on top of DAQmx Scale Thermocouple Scale

[EricEvola]

Hello,

Consider a DAQmx thermocouple task. DAQmx is already applying a scale according to the thermocouple type selected in Create Virtual Channel. I would like to use an additional custom table scale on top of the DAQmx thermocouple scale. Is there any convenient way to add this to the task, or am I forced to apply the scale after DAQmx read spits out the thermocouple readings? I have tried using DAQmx Channel Property node, AI.ChanCal.Table and the DAQmx Create Scale.VI but it seems like there is a conflict with the existing thermocouple scale in the task.

Thanks so much for your advice,

Eric

[aflojo · Accepted solution]

Hi Eric,

I have been looking into your question and I don’t think there is a way to use a custom scale on top of the thermocouple DAQmx Task because the task is set up to scale the input based on the thermocouple information you give it. So I think you have two options:

1. Scale the data after you read it in manually in LabVIEW
2. Set up an analogue input task with your own custom scale

Hope this helps!

[EricEvola]

Cool. That's what I kind of thought, but I wanted to pose it as a question because it would make the software I'm writing a bit simpler and cleaner if you could apply an user's table scale directly to a thermocouple task when it was first created. I really appreciate your time and reply.