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Figure 10. SHT40 typical and maximal

temperature accuracy.

Figure 11. SHT41 typical and maximal

temperature accuracy.

Figure 12. SHT43 maximal temperature accuracy.

The green lines represent the calibration points

for ISO-17025 certification.

Figure 13. SHT45 typical and maximal

temperature accuracy.

2.3 Recommended Operating Conditions

The sensor shows best performance when operated within the recommended normal temperature and

humidity range of 5 °C … 60 °C and 20 %RH … 80 %RH, respectively. Long term exposure to conditions

outside recommended normal range, especially at high relative humidity, may temporarily offset the RH

signal (e.g. +3 %RH after 60 h at >80 %RH). After returning into the recommended normal temperature and

humidity range the sensor will recover to within specifications by itself. Prolonged exposure to extreme

conditions may accelerate ageing.

The Sensors from Sensirion’s SHT4x Family show exceptional resistance to volatile organic compounds and

ageing. To avoid contamination the conditions described in the document “Handling Instructions SHT” [2]

must be met. Please note that this does apply not only to transportation and manufacturing, but also to the

operation of the SHT4x sensor.

±0.0

±0.2

±0.4

±0.6

±0.8

±1.0

-40 -20

0

20

40

60

80

100 120

Temperature (°C)

SHT40 typ

SHT40 max

T (°C)

±0.0

±0.2

±0.4

±0.6

±0.8

±1.0

-40 -20

0

20

40

60

80

100 120

Temperature (°C)

SHT41 typ

SHT41 max

T (°C)

±0.0

±0.2

±0.4

±0.6

±0.8

±1.0

-40

-20

0

20

40

60

80

100 120

Temperature (°C)

SHT43 max

T (°C)

±0.0

±0.2

±0.4

±0.6

±0.8

±1.0

-40

-20

0

20

40

60

80

100 120

Temperature (°C)

SHT45 typ

SHT45 max

T (°C)