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Published 20 hours ago • verified publisher icon analogdevicesinc

Erroneous conductivity readings with ADuCM3029_demo_cn0428_cn0429

Open jpagliaccio opened this issue 3 years ago • 2 comments

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  • We are getting erroneous conductivity readings with ADuCM3029_demo_cn0428_cn0429.
  • This is with the latest hex file downloaded 4/1/2021.
  • We are using standard solution KCL-700, a 700 microsiemens solution.
  • We are using the recommended probes - Cole-Parmer 100-series Replacement Conductivity/Temperature Probe, K=1, 59200-06 probes
  • DIP switches are set to Z mode.
  • Mode is changed to conductivity.
  • We are getting a reading readings like 3e-07 S/cm (screenshot).
  • We should be getting readings like 7e-04 S/cm.

Thanks for your help.

jpagliaccio avatar Apr 01 '21 21:04 jpagliaccio

Results from Evaluation board 1 with a 1% 1.5K ohm resistor image

Results from Evaluation board 2 with a 1% 1.62K ohm resistor image

jpagliaccio avatar Apr 16 '21 20:04 jpagliaccio

This topic is discussed on the EngineerZone and it does not seem to be a software problem so far: https://ez.analog.com/circuits_from_the_lab/f/q-a/543458/erroneous-conductivity-readings-with-aducm3029_demo_cn0428_cn0429/

Will wait for the verdict on EZ and proceed accordingly from there.

adrimbarean avatar Apr 20 '21 16:04 adrimbarean