Datasheet

Preliminary Data Sheet SHT3x-ARP
www.sensirion.com November 2014 - 0.9 2/11
1 Sensor Performance
1.1 Humidity Sensor Performance
Parameter
Conditions
Value
Units
SHT30 Accuracy tolerance
1
Typ.
3
%RH
Max.
Figure 2
%RH
SHT31 Accuracy tolerance
1
Typ.
2
%RH
Max.
Figure 4
%RH
Repeatability
2
0.2
%RH
Resolution
14
bit
Integrated Non-Linearity
3
Max.
0.2
%RH
Hysteresis
at 25°C
0.8
%RH
Specified range
4
extended
5
0 to 100
%RH
Response time
6

63%
8
s
Long-term drift
Typ.
7
<0.25
%RH/yr
Table 1 Humidity sensor specification
Relative Humidity (%RH)
100
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
90
±3
±3
±3
±3
±3
±3
±3
±3
±3
80
±3
±3
±3
±3
±3
±3
±3
±3
±3
70
±3
±3
±3
±3
±3
±3
±3
±3
±3
60
±3
±3
±3
±3
±3
±3
±3
±3
±3
50
±3
±3
±3
±3
±3
±3
±3
±3
±3
40
±3
±3
±3
±3
±3
±3
±3
±3
±3
30
±3
±3
±3
±3
±3
±3
±3
±3
±3
20
±3
±3
±3
±3
±3
±3
±3
±3
±3
10
±3
±3
±3
±3
±3
±3
±3
±3
±3
0
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
±4.5
0
10
20
30
40
50
60
70
80
SHT30
Temperature (°C)
Figure 2 Tolerance of RH at 25°C for SHT30
Figure 3 Typical tolerance of RH over T for SHT30
Relative Humidity (%RH)
100
±2
±2
±2
±2
±2
±2
±2
±2
±2
90
±2
±2
±2
±2
±2
±2
±2
±2
±2
80
±2
±2
±2
±2
±2
±2
±2
±2
±2
70
±2
±2
±2
±2
±2
±2
±2
±2
±2
60
±2
±2
±2
±2
±2
±2
±2
±2
±2
50
±2
±2
±2
±2
±2
±2
±2
±2
±2
40
±2
±2
±2
±2
±2
±2
±2
±2
±2
30
±2
±2
±2
±2
±2
±2
±2
±2
±2
20
±2
±2
±2
±2
±2
±2
±2
±2
±2
10
±2
±2
±2
±2
±2
±2
±2
±2
±2
0
±2
±2
±2
±2
±2
±2
±2
±2
±2
0
10
20
30
40
50
60
70
80
SHT31
Temperature (°C)
Figure 4 Tolerance of RH at 25°C for SHT31
Figure 5 Typical tolerance of RH over T for SHT31
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 constant conditions. It is a measure for the noise on the
physical sensor output.
3
Maximum deviation from the ideal shape (linear curve)
4
Specified range refers to the range for which the humidity or temperature sensor specification is guaranteed.
5
For details about recommended humidity and temperature operating range, please refer to section 0.
6
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.
7
Typical value for operation in normal RH/T operating range, see section 1.2. Maximum value is < 0.5 %RH/yr. Value may be higher in environments with vaporized
solvents, out-gassing tapes, adhesives, packaging materials, etc. For more details please refer to Handling Instructions.
±0
±2
±4
±6
±8
0 10 20 30 40 50 60 70 80 90 100
Relative Humidity (%RH)
SHT30
maximal tolerance
typical tolerance
DRH (%RH)
±0
±2
±4
±6
±8
0 10 20 30 40 50 60 70 80 90 100
Relative Humidity (%RH)
SHT31
maximal tolerance
typical tolerance
DRH (%RH)