HTU31V RH/T SENSOR IC

Analog Relative Humidity & Temperature Sensor

REV3 01/2021

Page 8

Error Codes

Relative Humidity

In case of abnormal open circuit, the voltage output

In case of abnormal short circuit, the voltage output

Temperature

In case of abnormal open circuit or values below -50°C, the voltage output

In case of values between -50°C and -40°C, the voltage output

In case of values between 125°C and 150°C, the voltage output

In case of abnormal short circuit or values above 150°C, the voltage output

Dew Point Temperature Calculation

The dew point is the temperature at which the water vapor in the air becomes saturated and condensation begins.

The dew point is associated with relative humidity. A high relative humidity indicates that the dew point is closer to the current

air temperature. Relative humidity of 100% indicates that the dew point is equal to the current temperature (and the air is

maximally saturated with water). When the dew point stays constant and temperature increases, relative humidity will decrease.

Ambient Temperature in °C, from HTU31

A, B, C Constants: A=8.1332; B=1762.39; C=235.66

sensor with the following formula:

Ambient Temperature in °C, from HTU31

Calculated Dew Point in °C

A, B, C Constants: A=8.1332; B=1762.39; C=235.66

























+

−













×

−

=

C

A

PP

RH

B

T

Tamb

amb

d

100

log

10













+

−

=

)

(

10

C

Tamb

B

A

Tamb

PP