SNAU265C june   2021  – july 2023 HDC3020 , HDC3020-Q1 , HDC3021 , HDC3021-Q1 , HDC3022 , HDC3022-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1HDC302x Devices
    1. 1.1 HDC3020 in WSON
    2. 1.2 HDC3021 in WSON
    3. 1.3 HDC3022 in WSON
  5. 2Storage and Handling Guidelines
    1. 2.1 Exposure to Contaminants
    2. 2.2 Chemical Analysis
      1. 2.2.1 Saturation and Recovery Tests
      2. 2.2.2 Long-Term Exposure
    3. 2.3 Packaging and Storing
      1. 2.3.1 Assembly
      2. 2.3.2 Application in Extreme Environment
  6. 3Programming the HDC3020
    1. 3.1 Trigger-On Demand
    2. 3.2 Auto Measurement
    3. 3.3 Programming the CRC
      1. 3.3.1 CRC C Code
    4. 3.4 Condensation Removal
    5. 3.5 Offset Error Correction
      1. 3.5.1 Offset Error Correction Example With a Fingerboard
  7. 4References
  8. 5Revision History

2.3.2 Application in Extreme Environment

Some applications require the usage of the HDC in harsh environments. Ensure that the exposure of the sensor to the maximum limit of temperature and humidity operating conditions meets the data sheet guidelines. Limiting exposure to volatile organic compounds at high concentration and long exposure time is critical. Usage in harsh environments must be carefully tested and qualified.

Exposure to any aqueous solutions is highly discouraged. In the event some aqueous exposure cannot be avoided, TI recommends to use the HDC3022 and follow the guidelines below:

  • Exposure to acids or bases may affect humidity output accuracy readings

  • Bases are less damaging than acidic solutions. All acids must be considered damaging to the sensor. Etching substances such as H2O2 or NH3 at high concentrations can be damaging to the sensor.

  • Corrosive solutions at very low concentrations are not damaging to the sensor itself. However, take care to ensure that the solder contacts are not damaged.