__      __
 \ \    / /
  \ \  / / 
   \ \/ /  
    \  /   
     \/    
           
           

         
         
 ### ##  
 #  #  # 
 #  #  # 
 #  #  # 
 #  #  # 
         

    #    
         
   ##    
    #    
    #    
    #    
   ###   
         

 ###     
  ##     
  ##     
  #####  
  ##  ## 
  ##  ## 
 ######  
         

         
         
 ##  ##  
 ####### 
 ####### 
 ## # ## 
 ##   ## 
         

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
'''Pressure-sensor tests''' I have some oil-pressure sensors, and plan to use them as oil/fuel/water/ebp... sensors. http://www.bmwpower.hu/gallery/albums/userpics/10444/pict0720.jpg (still seek for such connectors) These are VDO 360.081/061/006 units, 0-10bar range. ---- There's not much data on the web but this table: mBar Resistenza (Ohms) 0 10 2000 51 4000 86 5000 104 6000 122 8000 152 10000 180 I'm affraid these are NOT datasheet-numbers, but some home-measurement instead. ---- I've put together some nice excel-sheet to calculate it's characteristics: http://quasar.dynaweb.hu/~lezsi/vems/vdo-calc.gif [http://quasar.dynaweb.hu/~lezsi/vems/vdo-characteristics.xls XLS] Tried to keep it simple using linear approximation, this way i was able to code it to megatune ini also. Took some measures with my "professional" benchpad: http://quasar.dynaweb.hu/~lezsi/vems/pressure_sensor_test.jpg I've got slightly lower pressures than reality (-0.1, -0.2bar at free air). Gauge is flickering, jumps to even -0.4 bars. -Played around with series resistor values but couldn't make it better. At 1.5+ bars it seems to get stable, and maybe closer to real-life, but couldn't get real numbers without calibrated reference. I'm not sure what accuracy can be expected from such sensors.
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.