How to Setup SignalExpress to Read Thermistors on 9219 USB

[gotguts]

Hi,

     Can anyone tell me how to setup my 9219 to read thermistors.  I have used it to read TCs (type K), but can't seem to set it up to read thermistors.  I'm using SignalExpress and keep getting the message, "No supported devices found.  Creating empty SignalExpress block.  Add channels to the block by clicking Add Channels in the toolbar."  whenever I try to Add A Step.  Do I need to set something on my 9219 so that SignalExpress can recognize the hardware correctly (i.e. as thermistor hardware)?

Thx!

[aNIta B]

Hi- Since the 9219 doesn't support thermistor tasks, I believe you might be able to work around this by creating a 2 wire resistance measurement and applying a custom scale in your task.  You'll need to multiply your resistance by your current excitation to get voltage.  You'll then want to map your voltages to the temperatures specified by your thermistor. We don't have much documentation on doing this in Signal Express, however, there's a really good LabVIEW program on the NI Community, here.  That example at least shows the program flow of what needs to happen.  Additionally, this KB is helpful in understanding what has to be done to measure a thermistor with the 9219.  Have a great day!