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Version 2 – D1 – March 2022

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2.5 Recommended and Absolute Maximum/Minimum Operating and Storage Conditions

The SEN5x contains different sensing components with different recommended operating and storage ranges. To ensure

an optimal performance of the SEN5x, the “SEN5x Handling Instructions” as well as the “SEN5x Mechanical Assembly

and Design-in Guidelines” need to be followed.

2.5.1 SEN54 and SEN55

Table 6 and Figure 2 show the recommended operating and storage conditions in which all the sensing components of

the SEN54 and SEN55 show best performance, as well as absolute maximum/minimum conditions which must not be

exceeded. Gas sensing specifications are guaranteed only when the SEN54 and SEN55 are operated and stored under

the recommended conditions given in Table 6.

Exposure to conditions outside the recommended range may temporarily reduce sensor performance (reversible RH

drift, reduced RH, T, gas, PM accuracy). Exposure to conditions outside absolute maximum/minimum range may lead

to permanently reduced sensor performance (gas sensitivity drift) or cause permanent damage to the device.

The sensor must not be exposed towards condensing conditions at any time.

Condition

Parameter

Recommended

Absolute Maximum/Minimum

Unit

Min.

Max.

Min.

Max.

Operating conditions

Temperature

10

40

-10

50

°C

Relative humidity

20

80

0

90 (non-condensing) % RH

Storage conditions

Temperature

10

30

-40

70

°C

Relative Humidity

20

60

0

80 (non-condensing) % RH

Table 6 Recommended and absolute maximum/minimum operating and storage conditions for SEN54 and SEN55.

Figure 2 Recommended and absolute maximum/minimum operating and storage conditions for SEN54 and SEN55.

Operating

0

20

40

60

80

100

-40

0

40

80

-20

20

60

Temperature / °C

0

20

40

60

80

100

-40

Storage

0

40

80

-20

20

60

Temperature / °C

Recommended range

Absolute maximum/minimum range