Please Help me with the DAQs

[Rishabh]

Hi Everyone, 

My VI is supposed to take input from a pair of infrared sensors, A Photosensor and a Thermocouple. But, I am unable to find a DAQ that would suit all of it. Can anybody help please. I don't need a high sampling rate. A moderate DAQ would be just fine!!

Thankx!!!

[NitzZ]

Hello Rishabh,

                   Please let me know, which kind of output do you have for all these.. I guess NI USB 6008 would do your job..

Hope this helps you,

Regards,

Nitzy... 

[Rishabh]

Hi,

 I need a windows based system with a DAQ of sampling rate as low as 8-24 samples/sec. I am sampling the signals by statistical methods(taking the mean). My output requirement consists of purely On/off signals which will be used to activate/deactivate certain devices. 

 I require my thermocouple to be sensitive for some 8-50 degree celcius range with minimum resolution being of the order of 2-3 degrees. 

I had initially selected USB 6008 for my purpose as it was a cheap and optimum performer. but, i have read that the thermocouple reslution will rise to somewhere around 10 degrees. How far does the truth goes?? 

I hope this info might suffice to give u the clear idea about my requirements. 

Regards,

Rishabh

[smercurio_fc]

The USB-6008 is not a good choice for thermocouple measurements. It's just an analog input module, and thus provides no compensation for thermocouples. A more thorough explanation, including a suggested module, can be found here: Thermocouple Measurements with the USB-6008 or USB-6009. If you don't want to use a thermocouple-specific module then you must make sure you design and use the proper signal conditioning to allow you to connect it to the USB-6008 and still get accurate measurements.

I would suggest that you contact your local NI sales office, as they are very capable of helping in these kinds of situations.