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Environment and precautions needed for the 2626 DewK probe

Tech Notes

          

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Title:   Environment and precautions needed for the 2626 DewK probe 

Created:  7 Feb 2013

Last Revised:

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Applies To:  All 2626 probes

 

Problem Description:  2626 sensor reads incorrectly

 

Resolution/Work Around:     The following warnings regarding the 2626 relative humidity sensor should be observed:

 

  • The 2626 sensor must not have direct contact with any liquids, which can cause permanent damage to the sensor or cause long-lasting measurement error. 
  • The 2626 sensor must not be exposed to any corrosive vapors, which can cause permanent damage the sensor.
  • The 2626 sensor should not be exposed to vapors from volatile organic compounds, which can cause measurement error.
  • The 2626 sensor is specified to operate accurately in up 80 % relative humidity. Accuracy cannot be guaranteed above that limit.
  • Exposure to humidity above 90 % can soak the sensor and cause a residual measurement error after the sensor is returned to a lower humidity environment. The error will gradually diminish over time and may require several hours or longer depending on how high the maximum humidity was.
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