sensor signals for humidity and temperature are factory
calibrated, linearized and compensated for temperature
and supply voltage dependencies.
9
Further Information .............................................19
www.sensirion.com
February 2019 - Version 6
1/22
Datasheet SHT3x-DIS
1
Sensor Performance
Condition
Typ.
Max.
Typ.
Max.
Typ.
Max.
Low, typ.
Medium, typ.
High, typ.
Typ.
at 25°C
extended
4
63%
Typ.
7
Humidity Sensor Specification
Parameter
SHT30 Accuracy tolerance
1
SHT31 Accuracy tolerance
1
SHT35 Accuracy tolerance
1
Repeatability
2
Resolution
Hysteresis
Specified range
3
Response time
5
Long-term drift
Table 1
Humidity sensor specification.
Value
2
Figure 2
2
Figure 3
±1.5
Figure 4
0.21
0.15
0.08
0.01
0.8
0 to 100
8
6
<0.25
Units
%RH
-
%RH
-
%RH
-
%RH
%RH
%RH
%RH
%RH
%RH
s
%RH/yr
Temperature Sensor Specification
Parameter
SHT30 Accuracy tolerance
1
SHT31 Accuracy tolerance
1
SHT35 Accuracy tolerance
1
Condition
typ., 0°C to 65°C
Max.
typ., 0°C to 90°C
Max.
typ., 20°C to 60°C
Max.
Low, typ.
Medium, typ.
High, typ.
Typ.
-
63%
max
Value
0.2
Figure 8
0.2
Figure 9
±0.1
Figure 10
0.15
0.08
0.04
0.01
-40 to 125
>2
<0.03
Units
°C
-
°C
-
°C
-
°C
°C
°C
°C
°C
s
°C/yr
Repeatability
2
Resolution
Specified Range
Response time
8
Long Term Drift
Table 2
Temperature sensor specification.
1
For definition of typical and maximum accuracy tolerance, please refer to the document “Sensirion Humidity Sensor Specification Statement”.
2
The stated repeatability is 3 times the standard deviation (3σ) of multiple consecutive measurements at the stated repeatability and at constant ambient conditions. It
is a measure for the noise on the physical sensor output. Different measurement modes allow for high/medium/low repeatability.
3
Specified range refers to the range for which the humidity or temperature sensor specification is guaranteed.
4
For details about recommended humidity and temperature operating range, please refer to section 1.1.
5
Time for achieving 63% of a humidity step function, valid at 25°C and 1m/s airflow. Humidity response time in the application depends on the design-in of the sensor.
6
With activated ART function (see section 4.7) the response time can be improved by a factor of 2.
7
Typical value for operation in normal RH/T operating range, see section 1.1. Maximum value is < 0.5 %RH/yr. Higher drift values might occur due to contaminant
environments with vaporized solvents, out-gassing tapes, adhesives, packaging materials, etc. For more details please refer to Handling Instructions.
8
Temperature response times strongly depend on the type of heat exchange, the available sensor surface and the design environment of the sensor in the final
