how do set up multiple devices with multiple graphs in labview

[msumaverick]

Hello,

I am new at LabView, and we are trying to setup a test rig to measure voltage, pressure and flow rates. We are currently using a NI-6009USB box and Labview version 8.2.  Our problem lies in setting up the actual measurements on separate graphs. How do i go about setting up the daq-assistant to measure mulitple devices, and graph them on their own graphs?  We also need to know how to program in when measuring flow, how to convert it from square wave form to a calibrated curve?

Any help would be greatly appreciated!

Nate

[Dennis_Knutson]

When you configure the DAQ Assistant, you will be first asked to select the measurement type. Assuming that you have voltage sensors because you have the 6009, you select Analog Input>Voltage. You then get a list of devices. Since you only have one, it should be listed as Dev1. Expand that and then pick the channels you have connected to the sensors. Just like it says at the bottom of the of the channel window, you can select multiple channels with  <CTL> or <SHIFT> click. After you've done that, the next window is where you select your sample rate, number of samples, etc. You can also select a custom scale for each channel. This is where you would enter any formula you have from the sensor vendor in order to convert a voltage reading to scaled units.

The output of the DAQ Assistant is a dynamic data type. You can wire this to a single graph to display all readings together or use the Split Signals function to break out individual channels for separate graphs.

Message Edited by Dennis Knutson on 02-22-2007 03:33 PM