Data Sheet

Datasheet SHT3x-DIS
www.sensirion.com May 2018- Version 5 2/22
1 Sensor Performance
Humidity Sensor Specification
Parameter
Condition
Value
Units
SHT30 Accuracy tolerance
1
Typ.
2
%RH
Max.
Figure 2
-
SHT31 Accuracy tolerance
1
Typ.
2
%RH
Max.
Figure 3
-
SHT35 Accuracy tolerance
1
Typ.
±1.5
%RH
Max.
Figure 4
-
Repeatability
2
Low, typ.
0.21
%RH
Medium, typ.
0.15
%RH
High, typ.
0.08
%RH
Resolution
Typ.
0.01
%RH
Hysteresis
at 25°C
0.8
%RH
Specified range
3
extended
4
0 to 100
%RH
Response time
5

63%
8
6
s
Long-term drift
Typ.
7
<0.25
%RH/yr
Table 1 Humidity sensor specification.
Temperature Sensor Specification
Parameter
Condition
Value
Units
SHT30 Accuracy tolerance
1
typ., 0°C to 65°C
0.2
°C
Max.
Figure 8
-
SHT31 Accuracy tolerance
1
typ., 0°C to 90°C
0.2
°C
Max.
Figure 9
-
SHT35 Accuracy tolerance
1
typ., 20°C to 60°C
±0.1
°C
Max.
Figure 10
-
Repeatability
2
Low, typ.
0.15
°C
Medium, typ.
0.08
°C
High, typ.
0.04
°C
Resolution
Typ.
0.01
°C
Specified Range
-
-40 to 125
°C
Response time
8

63%
>2
s
Long Term Drift
max
<0.03
°C/yr
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
application.