Calculation of temperature

[GS]

I am new to data acquisition but am intriguied by it. That said...here
goes.

I am trying to calculate the temperature from a thermistor. I am using
ComponentWorks to access a DI-194 board from Dataq. I can read the
voltage accross the thermistor without a problem. But I have not been
able to calculate the temperature no matter what equation or set of
equations I use. Can anyone help with this problem? Have I given
enough info? From my research I think this should be a fairly simple
problem.

Thanks in advance.

Webweaver

[Enrique]

Have you try using signal conditioning VIs? They are located in:

Function palette -> Data Aqcuisition -> Signal Conditioning.

There is a VI specifically for thermistors, called "Convert Thermistor Reading.vi".

Good luck;
Enrique Vargas

[GS]

I'm not using LabView I am using ComponantWorks ActiveX controls in Visual
FoxPro which is a valid 32 bit container. The data is read through the
serial port using the UltimaSerial control. Let me know if you have any
furthur ideas.

Thanks

Enrique wrote in message
news:506500000005000000C81D0000-984882144000@quiq.com...
> Have you try using signal conditioning VIs? They are located in:
>
> Function palette -> Data Aqcuisition -> Signal Conditioning.
>
> There is a VI specifically for thermistors, called "Convert Thermistor
> Reading.vi".
>
> Good luck;
> Enrique Vargas

[Enrique]

I am sorry I didn't realize you were using ComponentWorks. Unfortunatelly, I am not familiar with it.

Just in case your problem is with the thermistor, NI provide some good resources that may be of help for your problem. The following page is the starting point for working with sensors:

http://www.ni.com/sensors/

For sensors fundamentals:

http://www.ni.com/sensors/toc.htm

A database:

http://www.ni.com/sensors/sensorsdb.htm

and a resource library:

http://zone.ni.com/devzone/devzone.nsf/webcategories/99324992D30933D38625684A004F0ACF?opendocument

Regards;
Enrique Vargas

[GS]

Thanks, I will check it out.

Greg

Enrique wrote in message
news:506500000005000000E71D0000-984882144000@quiq.com...
> I am sorry I didn't realize you were using ComponentWorks.
> Unfortunatelly, I am not familiar with it.
>
> Just in case your problem is with the thermistor, NI provide some good
> resources that may be of help for your problem. The following page is
> the starting point for working with sensors:
>
> http://www.ni.com/sensors/
>
> For sensors fundamentals:
>
> http://www.ni.com/sensors/toc.htm
>
> A database:
>
> http://www.ni.com/sensors/sensorsdb.htm
>
> and a resource library:
>
>
http://zone.ni.com/devzone/devzone.nsf/webcategories/99324992D30933D38625684
A004F0ACF?opendocument
>
> Regards;
> Enrique Vargas

[jwf]

There is a page on the developer zone called "Measuring Temperature with Thermistors". To find it co to this url: http://zone.ni.com/devzone/conceptd.nsf/2d17d611efb58b22862567a9006ffe76/417849c4947754dd86256866005868c5 .