ZMOD4410 Datasheet

© 2021 Renesas Electronics Corporation

12

December 17, 2021

8.1.3 Accuracy and Consistency

All Renesas gas sensor modules come with electrical and chemical factory calibration with data stored in the module’s nonvolatile memory

(NVM). Using the algorithms provided by Renesas and the calibration coefficients in the NVM will lead to stable measurement of the IAQ levels

according to UBA discussed in section 8.1.1 with a maximum deviation of ±1 category over the module’s lifetime. Typical IAQ accuracy and

consistency in an appropriate system implementation are displayed in Table 8 and in Figure 5. The accuracy for Renesas eCO2 algorithm was

proved on more than 20000 measurements and is shown in Figure 6.

Table 8.

Typical ZMOD4410 Sensor Module Performances

Parameter

Conditions

Minimum

Typical

Maximum

Unit

Accuracy for IAQ

Full UBA range [a]

± 1

IAQ

Accuracy for IAQ Ultra-Low Power Full UBA range [b]

± 1

IAQ

Consistency for IAQ

Part-to-Part Variation [c]

± 10

%

[a]

With a 95% confidence based on more than 26500 measurements with 280 sensor modules.

[b]

With 82% confidence based on more than 3500 measurements with 104 sensor modules.

[c]

Based on more than 30000 measurements with 380 sensor modules.

Figure 5. IAQ Accuracy and Consistency

Figure 6. Concentration Dependent Accuracy for eCO2