[FAQ] HDC2080/HDC2010 - Does TI have a list of chemicals that could affect RH accuracy when the sensors are exposed to them?

The following chemicals are known to cause drift of the humidity output readings which may be irreversible.

(This list is also found in: Humidity Sensor: Storage and Handling Guidelines)

1. Solvents such as: Toluene: C7H8, Acetone: (CH3)2CO, Ethanol: C2H6O, Methanol: CH3OH – Isopropyl Alcohol: C3H8O – Di-isopropyl Ether: C6H14O – Ethylene Glycol: (CH2OH)2 – Ethyl Acetate: C4H8O2 – Butyl Acetate: C6H12O2 – Methyl Ethyl Ketone: CH3C(O)CH2CH3
2. Acids such as: Hydrochloric acid: HCl, Sulphuric acid: H2SO4, Nitric Acid: HNO3
3. Other Chemicals, including: Ketenes, Ammonia: NH3, Hydrogen Peroxide: H2O2, Ozone: O3 – Formaldehyde: CH2O

This list is not exhaustive; other, unlisted chemicals may also cause shifting of the sensing element.