Datasheet ZMOD4410 (Renesas) - 8

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7. Sensor Module Characteristics 7.1 Gas Sensor Module
The ZMOD4410 Gas Sensor Module is designed to detect typical TVOC contaminations based on studies and international standards for indoor air quality. Characteristic module parameters are shown in Table 5. The response time for a gas stimulation is always within a few seconds, depending on the TVOC and its concentration. An active or direct airflow onto the sensor module is not necessary because diffusion of ambient gas does not limit the sensor module’s response time.
Important:
The ZMOD4410 also can detect safety-relevant gases for indoor air, such as carbon monoxide (CO); however, the sensor module is not designed to detect these interferants reliably and therefore it is not approved for use in any safety-critical or life-protecting applications. It must not be used in such applications, and Renesas disclaims all liability for any such use.
Table 5. Gas Sensor Module Specifications during Operation Symbol Parameter Conditions Minimum Typical Maximum Unit [a]
0 1000 ppm Resistance Measurement Range Ethanol in air 0 1000000 ppb [c] Ethanol in air for IAQ 1st Gen 160 30000 ppb IAQ Specified Measurement Range [b] Ethanol in air for IAQ 2st Gen 160 10000 ppb Humidity Range Non-condensing 0 90 % RH S Sensitivity over Lifetime Resistance in Air / Resistance at 10ppm Ethanol (RAir/RGas) 5 Ω/Ω T-80 Sensor Module Response Time [d] Time to change to 80% of end value for IAQ 1st Gen 10 s [a] The abbreviation ppm stands for “parts per mil ion,” and ppb is an abbreviation for “parts per bil ion.” For example, 1 ppm equals 1000 ppb. [b] Source: Umweltbundesamt, Beurteilung von Innenraumluftkontaminationen mittels Referenz- und Richtwerten, (Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz, 2007). [c] Conversion from ppm to mg/m3 for most common TVOC is by the factor approximately 2; for example, 5ppm equals approximately 10mg/m3. [d] Response times depend on TVOC gas and concentration. © 2020 Renesas Electronics Corporation 8 November 30, 2020 Document Outline 1. Pin Assignments 2. Pin Descriptions 3. Absolute Maximum Ratings 4. Operating Conditions 5. Electrical Characteristics 6. Block Diagram 7. Sensor Module Characteristics 7.1 Gas Sensor Module 8. Gas Sensor Module Operation Modes and Characteristics 8.1 Operation Modes 1–3 8.1.1 Air Quality – UBA Levels 8.1.2 Air Quality – Estimated Carbon Dioxide Correlation (eCO2) 8.2 Operation Mode 4: Odor 8.3 Operation Mode 5: Sulfur based Odor Discrimination 8.4 Conditioning and Stability 8.5 Environmental Temperature and Humidity 8.6 Accuracy and Consistency 9. Assembly Restrictions, Operation, Integration Notes, and Storage 10. Test and Calibration 11. I2C Interface and Data Transmission Protocol 12. Related Websites and Software 13. Glossary 14. Package Outline Drawings 15. Ordering Information 16. Revision History