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HDC1080, wind effect to the result

Shinichi Inoue
Guru 21701 points
Other Parts Discussed in Thread: HDC1080
Dear Specialists,

My customer is considering HDC1080 for carrier device.

And he has some question, could you please advise.

(1) When HDC1080 is operating,  wind blow into HDC1080, result is affected or not? ]

(2)When HDC1080 is under condensation, can it used continuously?
Should it be removed?

(3)Does it has a drift at 0% and 100% humidity?
Is it needed for calibration?
 
I appreciate your great help.

Best regards,
Shinichi

  • 0
    TI__Expert 5145 points

    Hi Schinichi,

    Below the answers to your questions:

    1. The wind itself doesn't impact the behavior of the HDC1080, but it could change the climatic conditions close to the surface of the sensing element: HDC1080 will detect the correspondent changes in temperature and humidity;
    2. When HDC1080 is used under condensation for long time, its accuracy could be impacted, and the correspondent output could present an offset. The condensation from the top of the HDC1080 can be removed switching on the heater and increasing the sample period of the output reading. The device is able to auto detect the condensation, because in this condition the HDC1080 output suddenly drop from about 100% to 0% (this is not physically possible, so it indicates that there is condensation). The heater should be switched on when the output suddenly fall from about 100% to 0%, and switched off when it suddenly rise from 0% to about 100%;
    3. The humidity itself doesn’t impact the accuracy of the device, but a combination of high humidity and high temperature can generate a drift in the output. In any case if the device is bring back to the normal operation condition, this drift is slowly recovered. For this reason any further calibration is not needed.

    Please let me know if this answers to your questions.

    Best regards,

    Carmine

  • 0 in reply to Carmine Iascone
    Guru 21701 points

    Dear Carmine

    Thank you for your reply.

    They are very helpful.

    I am going to send your information to the customer.

    If he has additional question, I'll consult again.

    I appreciate your great help.

    Best regards,

    Shinichi