Datasheet

Preliminary Data Sheet SHT3x-ARP
www.sensirion.com November 2014 - 0.9 3/11
1.2 Temperature Sensor Performance
Parameter
Condition
Value
Units
Accuracy tolerance
1
Typ. 10 to +55
0.3
°C
Repeatability
2
0.05
°C
Resolution
Typ.
14
bit
Specified Range
-
-40 to 125
°C
Response time
8

63%
>2
s
Long Term Drift
-
<0.03
°C/yr
Table 2 Temperature sensor specification; values are target specs and not
confirmed by measurements yet
Figure 6 Tolerance of the temperature sensor in °C for the SHT30 and SHT31
1.3 Recommended Operating Condition
The sensor shows best performance when operated within recommended normal temperature and humidity range of 5 –
60 °C and 20 – 80 %RH, respectively. Long term exposure to conditions outside normal range, especially at high
humidity, may temporarily offset the RH signal (e.g.+3%RH after 60h at >80%RH). After returning into the normal
temperature and humidity range the sensor will slowly come back to calibration state by itself. Prolonged exposure to
extreme conditions may accelerate ageing. To ensure stable operation of the humidity sensor, the conditions described
in the document “SHTxx Assembly of SMD Packages”, section “Storage and Handling Instructions” regarding exposure
to volatile organic compounds have to be met. Please note as well that this does apply not only to transportation and
manufacturing, but also to operation of the SHT3x-ARP.
8
Temperature response times strongly depends on the design-in of the sensor in the final application. Minimal response time can be achieved when the thermalized
sensor at T1 is placed on a well conducting surface with temperature T2.
±0.0
±0.5
±1.0
±1.5
±2.0
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
SHT30/SHT31
maximal tolerance
typical tolerance
DT (°C)DT (°C)DT (°C)DT (°C)DT (°C)DT (°C)