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HDC1080EVM: Cleaning the sensor window

Kenji Ohno1
Genius 5095 points
Part Number: HDC1080EVM
Other Parts Discussed in Thread: HDC1080

Hi Team,

Please tell me the recommended way to remove dust and dirt from the sensor window of HDC 1080 EVM.

My customers are trying to use a cotton swab coated with low alcohol.

Is there not a problem?

Best Regards,

Kenji

  • 0
    TI__Genius 11750 points

    Hi Kenji-san,

    The polymer, which is the sensing element of the humidity sensor, should be protected from dust and debris, as well as chemical substances in the form of liquids and vapors.  The cleaning technique you've mentioned above is not recommended as it may chemically change the polymer structure and therefore affect device accuracy.  Currently, there is no cleaning procedure for the polymer of the HDC1080 humidity sensor, and this is common across humidity products.  When designing with humidity sensors, there are special handling and procedure guidelines that must be followed in order to ensure device longevity and correct device operation.  Please refer to the following document:

    Humidity Sensor: Storage and Handling Guidelines: http://www.ti.com/lit/pdf/snia025

    Best Regards,

    Matt

  • 0 in reply to Matthew Sauceda
    Genius 5095 points
    Matt-san,

    Thank you for information.
    I would like to take measures to prevent dust and dirt from sticking to the sensor window.
    Are there recommendations for humidity and air passing filters?
    If you have, please tell the manufacturer and model number.

    Is it also possible to use these for mass-produced products?
    We need a product that can withstand the assembly process.

    Best Regards,
    Kenji
  • 0 in reply to Kenji Ohno1
    TI__Genius 11750 points
    Hi Kenji,

    There are design techniques that my help with the questions above. I've provided this documentation below.

    Optimizing Placement and Routing for Humidity Sensors: www.ti.com/.../snaa297

    Please follow this document, along with the correct handling and storage guidelines, which displays the correct assembly procedure and process when mass-producing devices.

    Best Regards,
    Matt