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[v1-02] 2018-Feb-19

ENS210 − Soldering & Storage Information

Reconditioning

The procedures indicated below accelerate the reconditioning

of the sensor back to its calibrated state.

After Soldering

After soldering according to Figure 35, RHS reading may show

an offset of -2%RH compared to its calibrated value. This offset

will slowly disappear if the device is exposed to normal ambient

conditions (e.g. T = 25ºC, RH = 45%RH, for a week). To accelerate

return to its initial calibrated state, we recommend to expose

devices to 25ºC and 75%RH for 12 hours. This would reduce the

time it has to recover at normal ambient conditions before

usage.

After Extreme Conditions

If the device is exposed to conditions outside the “specified safe

operating range” for long time, RH reading may show an offset

compared to its calibrated value.

The following procedure accelerates the reconditioning of the

sensor back to its calibrated state:

• A mild baking step at 105ºC for 12 hours, to evaporate the

contaminant.

• A hydration step at 25ºC and 75%RH for 12 hours, to

rehydrate the sensor material.

• A soak step at normal ambient conditions

(e.g. 23ºC ± 3ºC, 35-55%RH) for 24 hours.

ENS210 Datasheet(PDF) 34 Page - ams AG