Chemical Resistance of E+E Humidity Sensors

Chemical Gas
Concentration
Harmless Negative
Effect
carbon monoxide CO up to 400 ppm X
ammonia-NH3 up to 500 ppm X
sulphur dioxide-SO2 up to 100 ppm X
formaldehyde-HCHO up to 10 x MAC X
Freon 113-C2Cl3F3 X
chlorine-Cl2 up to 10 x MAC X
hydrogen chloride-HCL X
hydrogen fluoride-HF X
nitrogen dioxide-NO2 up to 20 x MAC X
ethanol-CH3CH2OH(liquid: for cleaning; gas: harmless) X
methanol-CH3OH(liquid: for cleaning; gas: harmless) X
ozone-O3 up to 10 x MAC X
ultraviolet rays (at 300-400 nm & 2 J/cm² / time of exposure: approx. 5 minutes) Sensitive area of the sensor surface is protected by a metallic layer X
Isopropanol-(CH3)2CHOH(liquid: for cleaning; gas: harmless) X
chlorine methane – CH3CL X
ethylene oxide-C2H4O up to 15% X
hydrogen peroxide H2O2 up to 10 x MAC X

MAC = Maximum Acceptable Concentration

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