Pt100 (USB-6008) configuration problems

Hello

I'm using the hardware DAQ USB-6008 (I know that's not accurate and all) and I use the Pt100 (QAP2010, click for plug technique).

I connected it like this.

Now in LabVIEW, these are the only options (DAQmx new task-> acquire->-> RTD temperature signals).

If I choose for custom settings, I get these options (I don't know what variables that is).

I use a small greenhouse where I need to measure the temperature and humidity and control environment (by using a fan to cool the cartridges to greenhouse and heat to heat).

My goal is to read the temperature using a graph on the front panel.

Can someone help me how configure/choose the right options? If you need more information I'll provide them as soon as possible!

A quick search for RTD class B shows the precision and the coefficient. As Fan Ravens stressed resistance according to the temperature is plotted in the data sheet.  To control the temperature in greenhouse, a simple calculation of the slope of this graph is not good enough.

Note that the USB-6008 case limited an active player on the outputs analog and it controls only the voltage. So you will need at least one external resistor and possibly and external power to excite the RTD.  These options that you have linked is not applicable to the USB-6008, which is a very simple device. You should perhaps simply to measure the voltage and calculate first resistance, then the temperature.

Lynn

Tags: NI Software

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