Hello all,
I am writing for help regarding the setup I am trying to achieve. I am trying to read an output voltage from my MPX2010DP pressure transducer. It is rated for 0-1.45 PSI, and a full range of 25mV. I am using it to read pressure from a pitot tube I have set up in a duct system.
The model I am using has 4 pin connections: 1 = Ground, 2 = V+out, 3 = Vsupply, and 4 = V-out. I hooked up my power supply ground to pin 1 and the live to pin 3. I then hooked up the outputs pin 2 and pin 4 to the NI 9215 AI3+ and AI3-. The result was disappointing. I then realized I need signal conditioning to read the mV range, which the NI 9215 AI has available. I hooked it up, and get random numbers, both negative and positive nearly 0.
I have an exterior power supply, an NI 9219 AI, 9215 AI, NI 9472 DO, and a NI 9263 AO. All are housed in the NI cDAQ-9172.
1) What did I do wrong with my original setup? Obviously the 9215 doesn't have signal conditioning, but when using the 9219 that does have the signal conditioning, I received data about once every 5-8 seconds.
2) I have heard the NI 9237 is recommended for this, but I don't believe we have one here onsite. Is that strongly recommended to use? Would it fit this specific application?
3) What would be a VI to test my setup? I just used DAQ assistant and a while loop, but I got random small numbers for my data.
Thanks!
http://www.farnell.com/datasheets/2291387.pdf?_ga=2.230655071.2124413838.1534440267-810072295.153444...
