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HDC2010: Sensor mounting method

Seishin
Genius 4135 points

Part Number: HDC2010

Hi,

I would like to use HDC2010 for temperature and humidity measurement of refrigerated transport application.

I would like to pass data on the wire at a distance of about 1m from the sensor.(HDC2010)

The sensor and the MCU are communicating with i2c.

Is there a sensor implementation guide or reference design in this application?(Except SNAA297A)

Should I use a sensor case and a Flex PCB?

Best regards,
Seishin

  • 0
    TI__Expert 5695 points
    Hi Seishin,
    The application note that you mentioned, Optimizing Placement and Routing for Humidity Sensors (Rev. A) www.ti.com/.../snaa297 is the only one with placement and layout guidelines we have today. Having 1 meter of separation between MCU and HDC2010 shouldn't be a problem, but please confirm it with the I2C specs and driving capabilities of your MCU of preference.

    There is a Sub 1GHz wireless MCU TI design that you could use as reference even though it doesn't fit exactly your usecase.
    www.ti.com/.../tida-01477

    However from a case and protection perspective it will depend on your system and experience in the area. As mentioned in app note SNAA297A is key to have air flow going to the humidity sensor and this sensor should be protected from direct exposure to water, dust or other chemicals that could contaminate it and produce large RH errors, as explained in foot note (12) on page 5 of the HDC2010 data sheet and in the app note Humidity Sensor: Storage and Handling Guidelines www.ti.com/.../snia025

    Regards,
    Jose
  • 0 in reply to Jose Arteaga4
    Genius 4135 points
    Hello Jose,

    Thank you for the information.

    Best regards,
    Seishin