LabVIEW

cancel
Showing results for 
Search instead for 
Did you mean: 

34970A termocouple configure

Solved!
Go to solution

Hi guys, i have a big problem here. I am using a an Agilent 34970A for acquire temperature, and using its driver for LabVIEW. Until here, thats ok, but when i change termocouple type, the vi don´t change. Example: i choose t-type, and run my vi, but the data acquired are wrong, because de vi don´t really change the termoccouple type. He is return for j-type indifferent of my choose. How i troubleshooting this?

Icaro Kossmann
LabVIEW 8.6 Newbie.
Brazil
0 Kudos
Message 1 of 21
(6,793 Views)

Hi Icaro,

 

you need to check the commands send to your DMM and to compare them with the ones given in the manual of your device…

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
0 Kudos
Message 2 of 21
(6,785 Views)
How are you changing the type? Hopefully you are doing it by changing the constant on the main's block diagram.
0 Kudos
Message 3 of 21
(6,781 Views)

So Dennis, am i using an Enum like control to change the type of thermocouple, but even changing the type, my daq still auto config for j-type. I try using a t-type like constant, but i dont have success.

Icaro Kossmann
LabVIEW 8.6 Newbie.
Brazil
0 Kudos
Message 4 of 21
(6,775 Views)

Thanks GerdW, but how i can make it?

Icaro Kossmann
LabVIEW 8.6 Newbie.
Brazil
0 Kudos
Message 5 of 21
(6,774 Views)
Post an image of your block diagram. I've used the 34970 and the 34980 extensively without any such problem.
0 Kudos
Message 6 of 21
(6,772 Views)

Ok, thats it 🙂

Icaro Kossmann
LabVIEW 8.6 Newbie.
Brazil
0 Kudos
Message 7 of 21
(6,769 Views)
The for loop is unnecessary as is the sequence structure. I would also recommend that you connect the functions in series and make use of the error in/out connections
0 Kudos
Message 8 of 21
(6,764 Views)

Like it?

Icaro Kossmann
LabVIEW 8.6 Newbie.
Brazil
0 Kudos
Message 9 of 21
(6,758 Views)
Sort of. I still don't see any reason for the sequence structure but give it a try. You can also turn on NI-Trace and look at the command that is actually sent. I don't have a 34970 right now to try it.
0 Kudos
Message 10 of 21
(6,750 Views)