Measuring with LVDTs without mains power

Are there any data acquisition solutions to drive and record from LVDT's that do not need 240V power i.e. SCXI chassis. The measurement system will go inside a large machine tool with flood coolant so 240V live power is not good. Ideally I would like to use a USB bus powered system so it is plug and play and low voltage. The measured items are moved on a pallet shuffle system, so the wiring either power or sensors must be unplugged easily.
Or are the any precision linear distance devices similar to LVDTs which can be used with a NI USB DAQ system. There are to record any physical movement of a component in process. Resolution 10 microns and sealed against water and swarf.
Regards
Simon

What you might wish to consider is using an FM system and a transformer to isolate the signal from the system.
If you use a carrier based system (FM) then you will obtain a high degree of noise immunity and by using a transformer you will obtain safety isolation and protection to a required international standard.
Lucas Schaevitz manufacture a conditioning module that meets the above requirements and I believe that Solatron do as well.
I have used both of these manufacturers equiment for many years and found both to deliver excellent products.
LVDT's don't last for ever so try to accomodate the life of the item (the bearings wear out eventually and coolant is horrible stuff even in these days of highly filtered coolant).

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Please take the Mac to Apple store to have it checked out.
Genius Bar reservation
http://www.apple.com/retail/geniusbar/
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seriously, invest in a new hitachi travelstar 320gb for 49 bucks from that tiger place online and a usb hard drive caddy, pop in your free clonezilla cd and your rescue and recovery problems will be over!
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Moderator note: Question added to subject line for clarity.
Message Edited by Agotthelf on 28-04-2009 08:45 AM

That's because you are asking a T500/W500 question in the Thinkvantage forum. Anyway, the answer to your question is in this thread.
ATI recently started packaging their switchable graphics driver together with their regular Catalyst. So downloading their latest driver Catalyst 9.4 from the ATI/AMD site and then modifying it with the Mobility Modder will allow you to use switchable graphics without the power manager. The little problem is just that the released version of the Mobility Modder stopped working with Catalyst 9.2 and you are on your own getting a modified Modder working on 9.4, see here.
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Gurdas Singh
PhD. Candidate | Civil Engineering | NCSU.edu

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Message was edited by: Ant1993

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hi itrcomp
I would suggest doing a power drain
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then reconnect just the Ac see if it will turn on.
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Go to Solution.

Hello, thanks for the reply!
Actually I am just going to replace 60 Peltier elements in a "home-made" 15 years old heat exchanger (I expect to find some mice too ). This assembly has dropped performance (heat transfer power) and also I know that, a few years ago after a malfunction with the hot side cooling fans, this device was running for a certain time without forced cooling. What is quite bad in case of Peltier-elements. I have already bought 65 brand new Peltier-modules and after I get some heat conducting paste, I will replace them. And I will have 60 pieces of old Peltier modules, to play with them
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Hello , Welcome to the HP Support Forums! It is a great place to find the help you need, both from other users, HP experts and other support personnel. I read your post about the BIOS, and wanted to assist you! Here are a few things you can try. Start with a Hard Reset. Then try using the HP Support Assistant to install any necessary drivers. Check the Windows Update as well. If you are having trouble finding or installing updates, then you can use this site to help: Open the Windows Update troubleshooter
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Here is what Apple says to do with an iMac that won't start, it's from the owner's manual.
If your iMac won’t turn on or start up Â Make sure the power cord is plugged into your iMac and a functioning power outlet.
Â Restart your computer while holding down the Command (x) and R keys, until the computer restarts. When the Mac OS X Utilities pane appears, select an option to repair your disk, restore your software, or reinstall Mac OS X and Apple applications. For more information, see “Repairing, Restoring, or Reinstalling Mac OS X Software” on page 44.
42 Chapter 4 Problem, Meet Solution
Â Press the power button (®) and immediately hold down the Command (x), Option, P, and R keys until you hear the startup sound a second time. This resets the parameter RAM (PRAM).
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Â If you still can’t start up your iMac, see “Learning More, Service, and Support” on page 54 for information about contacting Apple for service.

Measuring with LVDTs without mains power

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