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Lee D Case
12/15/05 13:19
Read: 624 times


 
#105303 - LVDT and Strain Gauge devices
Responding to: Steve M. Taylor's previous message
In our applications (balancing) we have used LVDT's and strain gauge based load cells for both static and dynamic measurements.
Technically an LVDT in a proving ring or force ring IS a load cell.
Both of these techniques are most definately temperature sensitive.
High quality strain gauges have temperature compensation built-in for the material they are bonded to (aluminum or steel most common) drift is still always a problem. Weight scales usually have auto-zeroing schemes built in. There is another technique I have heard about but have never seen availible: Measurement of the change in quartz crystal resonance due to strain applied to the directly to the crytal itself. Big advantage would be all digital, no analog electronics involved !!.


List of 17 messages in thread
TopicAuthorDate
electromagnetic force transducer      Rao Np      12/09/05 06:12      
   electromagnetic force transducer?      Russell Bull      12/09/05 18:31      
      Agree      Steve M. Taylor      12/10/05 04:37      
         load cells      Terry Lingle      12/10/05 07:29      
            Time constant      Steve M. Taylor      12/10/05 08:02      
               sensor      Terry Lingle      12/10/05 19:37      
                  Strain gauges ?      Steve M. Taylor      12/11/05 05:20      
                     LVDT?      Bruce Bailey      12/11/05 09:33      
                        LVDT      Steve M. Taylor      12/11/05 10:16      
            Strain gauge      Oliver Sedlacek      12/13/05 14:55      
               Hmm      Steve M. Taylor      12/13/05 15:13      
                  LVDT and Strain Gauge devices      Lee D Case      12/15/05 13:19      
                     Eh?      Andy Neil      12/15/05 14:12      
                     Singing wire      Steve M. Taylor      12/15/05 15:09      
                        LVDT      Robert Revens      12/16/05 10:04      
                           LVDT      Lee D Case      12/16/05 11:36      
                              Mine too      Steve M. Taylor      12/16/05 13:09      

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