Signal Conditioning
multiple tc types on one scxi 1102
Hello doloop,
You can indeed configure a task to have to two different types of thermocouples, and acquire from multiple thermocouple types in one DAQmx Task. For each channel, the NI-DAQmx driver will apply different conversion coefficients to convert voltage measurements from different thermocouple types into temperature measurements. You can configure this easily in Measurement & Automation Explorer (MAX), by creating a DAQmx Task of the thermocouple type, and adding multiple physical channels from the SCXI 1102 module to the channel list. For each channel in the scan list, under the settings tab, you will have the option to select what type of thermocouple to associate with each channel, along with CJC settings. You can also do this programmatically in LabVIEW using the DAQmx Create Channel VI. I've attached a shot of a block diagram that shows how to program this.
I hope this helps!
Travis G.
Applications Engineering
You can indeed configure a task to have to two different types of thermocouples, and acquire from multiple thermocouple types in one DAQmx Task. For each channel, the NI-DAQmx driver will apply different conversion coefficients to convert voltage measurements from different thermocouple types into temperature measurements. You can configure this easily in Measurement & Automation Explorer (MAX), by creating a DAQmx Task of the thermocouple type, and adding multiple physical channels from the SCXI 1102 module to the channel list. For each channel in the scan list, under the settings tab, you will have the option to select what type of thermocouple to associate with each channel, along with CJC settings. You can also do this programmatically in LabVIEW using the DAQmx Create Channel VI. I've attached a shot of a block diagram that shows how to program this.
I hope this helps!
Travis G.
Applications Engineering
Message Edited by Travis G. on 04-18-2006 05:09 PM
