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Field Use of the Druck DPI 620 Genii

We have AMS ver. 12.5 and the Druck DPI 620 Genii. AMS downloaded test schemes use Channel One for the current (mA) measurement. This channel has a higher impedance which means current measurement using the Rosemount test connections is inaccurate. Has anyone found a work around for this? Disconnecting the negative wire to series the calibrator into the loop is not an option for us.

Micah Dudley

• 3 Apr 2018 5:38 PM
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2 Replies

• Bruce Schaller

  

  • 3 Apr 2018 6:45 PM

  Hi Micah,
  
  I am aware that it's less than ideal, but you can always modify the test scheme so that you manually enter the data. Right click the test scheme, select the connection tab, and where it says "output measured" change it to "Manually". Then, when you reach the test, you can use channel 2 (or even an external measuring device), but you will need to enter the result into the calibrator by hand. I suggest documenting the reasoning into the test scheme notes so that techs will see the reasoning for the manual entry. I am not sure if it is possible to change the test type to manual entry on the Druck; this is possible on a Beamex.
  
  In fact, using manual entry solves a different problem I've sometimes encountered- sometimes instruments' test points are damaged, and not usable. If an accuracy of 0.2% is acceptable, Fluke makes a current clamp meter for mA DC, which is very useful when checking loops, it's even quicker than test hooks.
  
  How much error are you observing between the two channels?
  
  Good Luck!
  Bruce Schaller

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• Micah Dudley

  

  • 4 Apr 2018 5:06 PM

  Hi Bruce,
  
  Thank you for your response.
  
  Unfortunately the Druck is not like the Beamex. You can not go in and change the scheme that is downloaded.
  
  Our fail point is 0.5% so a clamp on meter is not an option for us.
  
  I also got the channels backwards in my original question. Channel one has the low impedance. Channel two has the high impedance.
  
  Micah

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