Gas Sensor Module for TVOC
and Indoor Air Quality ZMOD4410 Datasheet Description Features The ZMOD4410 Gas Sensor Module is designed for detecting total
volatile organic compounds (TVOC), estimating CO2, and
monitoring indoor air quality (IAQ) in different smell based use
cases, including very humid and dusty applications with the
possibility of water spray, condensation, or immersion. It is a 12LGA assembly (3.0 × 3.0 × 0.7 mm) that consists of a gas sense
element and a CMOS signal conditioning IC. The module's sense
element consists of heater element on a Si-based MEMS structure
and a metal oxide (MOx) chemiresistor. The signal conditioner
controls the sensor temperatures and measures the MOx
conductivity, which is a function of the gas concentration. The
measurement results can be read via an I2C interface with the
user's microprocessor, which processes the data. Sensor output based on AI machine learning algorithmic: Measurement of total organic compounds (TVOC)
concentrations and indoor air quality (IAQ)
• Module algorithm estimates carbon dioxide level (eCO2)
• Algorithm to set a control signal to trigger an external
action based on IAQ and odor change
• Algorithm to discriminate sulfur based odors
Heater driver and regulation loop for constant resistance,
minimizing effect of environmental temperature on signal
Customization for mobile, industrial, and consumer
applications
Internal auto-compensated temperature sensor; not stress
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