which traditional daq example will be best for thermocouple temp measurements?

[Notay]

Hi,

i have a PCI 4351 card connected to a TBX 68T connector block which is used to measure the temp using thermocouples. it uses an analogue input from the thermocouples, but the card is only compatible with traditional daq programming.

i have looked at the example finder, and under the folder 'Hardware and software' click the sub folders 'traditional daq', then click 'analogue input' and finally click the 'general' sub folder and you will see a list of example vi's, if you have the traditional daq installed. but i do not know which will be of great benefit to my work. please help.

does anyone know of a good example that i can use and relate to my work and devices? it would be of great help as i am new to daq.

thanks!

Notay

[Oswald_Branford]

Hi Notay!

What version of labview are you using?

There is an example called: NI 435x Thermocouple. VI; you can use this one to make your measurement. Im adding you the descrption and instructions:

DESCRIPTION:
This example illustrates how to take proper thermocouple measurements using the NI 435x devices.  Some  of the unique features include:
* Reading CJC sensor upon every scan (if using Built-in, this is read in Ohms mode)
* Auto-zero (offset removal)
* Per channel Open TC and GND referencing settings

NOTE: This VI will only work the NI 435x devices.  Also, this VI is NOT designed to be used as a sub VI. Furthermore, this VI is NOT designed for use with Named Channels configured in the Measurement & Automation Explorer.

INSTRUCTIONS:
(1) Select the Device number and Notch Filter Frequency (10, 50, or 60 Hz) which apply to all channels. 
(2) Select the Cold Junction Compensation settings. 
-- If you select "Built-in", the User specified cold junction temp. will be ignored.
-- If you select "User specified", enter the cold junction temperature in Celcius into the User specified cold junction temp. digital control.
(3) Select the Channel Settings. You can only specify one channel per cluster arr

If you cant find it, tell me waht version of labview you are using and i can help you get it. I hope this can help you, have a great day!!!

Oswald Branford

[Notay]

Hey Oswald Branford! thanks for replying, you know you people on this website are really clever and cool, thank you.

unfortunately i was unable to find the example you suggested for ni 453x thermocouple measurement, i am using labview 8.0, is it in this version?

thanks!

Notay

[Oswald_Branford]

Hi Notay!

Thanks for your compliments, im attaching the VI i told you about so you can use it, it has all the subVI's of traditional daq in it so make sure you have the support of traditional daq for your version of labview (if you can check on the find examples then you should be ok). Give a try to the VI and let me know how did it go!

Best of luck 🙂

Oswald Branford

PS. I have version 8.2 of labview btw, anything else just let me know!

[Notay]

Hey Oswald Branford!

thanks for the vi! i really appreciate it, just going to take a long time to work everything out, it looks really involved and crazy! not to worry,

when i loaded it, it required some files from the sub vi, it required:

'(sub) 4350 Parse Settings.vi' and '(sub) Remove offset and get CJC voltage.vi'

i have not got the equipment installed on the computer i am currently on, but have at work, i do however have the traditional daq (examples) installed on my home computer and office computer, so will the required sub vi's be on my home computer aswell or only just on the office computer?

would it be best for me to download the ni 435x driver on my home computer and would this include the sub vi's required?

thanks!

Notay 

[Notay]

hi, Oswald Branford!

would it possible for you to upload the required sub vi's if you have them please, if i am unable to find them?

Thanks!

Notay

[Oswald_Branford]

Hi Notay!

Sorry about that, thos sub Vi's are part of the analog in library of daq. Most likely you will only need the traditional daq driver and the correct configuration of your hardware. Im attaching the VI's, keep me updated of your results and if you need something else let me know.

Best of luck! 🙂

Oswald Branford

[Notay]

Hey Oswald Branford!

thanks for the sub vi's, the code seems to be error free on my home computer when the sub vi's are found, i will test it tomorrow when i go in to work, and hopefully all of the sub vi's will be found by the system at work and i will let you know of the progress.

where exactly is the default location for the sub vi's that are required?

thanks!

Notay