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What hardware ?

On Programmer » LabVIEW

3,001 words with 3 Comments; publish: Wed, 07 May 2008 12:47:00 GMT; (20078.13, « »)

Hi all,

I am working on a new experimental set up for my thesis and I want to contro

l

the whole process using LabView 8.

The set up has two chambers each one connected to a capacitance manometer

(http://www.mksinst.com/cgi-bin/product.exe?pid=626a) and, 4 solenoid

valves (http://www.mksinst.com/pdf/HPSEMCvDS.pdf) to control the flow.

My goal is to open the valves when the pressure reaches a certain value in e

ach

chamber using LabView.

So far I have ordered the valves with 24v DC solenoids (1.3 A initial /

0.3 A running) and an external power supply for all of them. For the

capacitance manometers I have ordered a Digital Power Supply

(http://www.mksinst.com/pdf/Pdr2000ds.pdf) with an Rs-232 interface.

I am very new to LabView and I am not an electrical engineer.

I don't know what

hardware I need to connect the valves and the manometers to the PC.

Any suggestions?

Regards,

George.

All Comments

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  • 3 Comments
    • Hi Gef,

      I've used NIs ER-8 (and ER-16) relay box

      es,and your current-requirements are within specs for these relays.&nbs

      p; Don't know how long they last when switched at 1.5 amps... Yo

      u can control the ER-8 with

      an inexpensive DIO board (DIO24?) - anyway pick the DIO board from the

      options listed on the <a href="/app/links/?link=http://sine.ni.com/nips/cds/view/p/lang/en/ni

      d/1731" target="_blank">ER-8/16 page</a>.

      It looks like you may want some analog-input (voltage measuring) capabi

      lity for your pressure-transducers(?) If so, you might do both DIO and

      analog-INs with one multifunction DAQ board... and a mess of accessori

      es for cabling multifu

      nction board to the ER-8 as well as an anaolg break-out box.  

      ;I wouldn't do that ! If you need analog-INs, I'd advise&nbs

      p;a seperate analog board (w/breakout box) and cable straight to the BO-box!

      Cheers.

      #1; Wed, 07 May 2008 12:48:00 GMT
    • I would really suggest the Compact Field Point unit. I know there is some sp

      ecial pricing for students / universities, and you can do this rather easily

      with the CFP 2120 / or 2020 and one or two AIO modules. This way you will h

      ave 4 analog inputs for you

      r pressure transducers and 4 analog outs for your soleniods.

      Good luck.

      #2; Wed, 07 May 2008 12:49:00 GMT
    • Here's a low-cost offering of relay boards.. I haven't used them perso

      nally, but have heard of them a lot.. and these guys provide LabVIEW VIs, ar

      e present on LabVIEW lists/forums, etc.

      <a href="/app/links/?link=http://www.easydaq.biz/" target="_blank">http://www.easydaq.biz/</a

      >

      Just in case you're on a tight budget..

      -KhalidMessage Edited by Khalid on 04-04-2006 12:11 PM

      #3; Wed, 07 May 2008 12:50:00 GMT