Measuring Temperature and Voltage Simultaneously on the NI 435x

[NRiesco]

Here, we've been using an NI 4350 along with a TBX-68T to measure the output voltage of a pressure transducer. To do this, we've used the example 'NI 435x Continuous Buffered Acq.vi'. Now, we want to measure simultaneously the temperature of a K type thermocouple and the output voltage of the pressure transducer.

The first problem we had was using the Measurement & Automation Explorer. After setting up a channel for the thermocouple and clicking on the test button, the measurements are so noisy that they even go out of range. However, if we use the test button for 'Devices and Interfaces' the thermocouple measurements look alright.

Something similar happens when we use the example 'NI 435x Continuous Buffered Acq.vi'. If the thermocouple and the pressure transducer are both connected to the TBX-68T, the thermcouple measurements are very noisy and sometimes out of range. When only the thermocouple is connected to the TBX-86T, then the measurements look alright.

I believe the problem is somehow related  to a question already posted:

http://digital.ni.com/public.nsf/allkb/862567530005F09C862567E7004F6871

My question is:

is it possible to modify the example 'NI 435x Continuous Buffered Acq.vi' to measure simultaneouly our thermocouple and pressure transducer?

[JonBowers]

Try using the Multiple Transducer continous.vi from the example finder under NI-435X>>Multiple Transducers instead. It is designed to aquire from multiple channels with different settings.

Regards

Jon B
Applications Engineer
NI UK & Ireland

[NRiesco]

Thank you, that did the trick!