ZMOD4450 Datasheet

© 2021 Renesas Electronics Corporation

8

June 30, 2021

6. Sensor Module Characteristics

6.1 Gas Sensor Module

The ZMOD4450 Gas Sensor Module is designed to detect typical gases inside refrigeration applications associated with food ripening or rotting.

Specifications for sensor module operation are shown in Table 5. The response time for a gas stimulation is always within a few seconds,

depending on the gas and its concentration. An active or direct airflow onto the sensor module is not necessary since diffusion of ambient gas

does not limit the sensor module response time.

Important: The ZMOD4450 can also detect some safety-relevant toxic gases; however, the sensor module is not designed to detect these

interferants reliably, and it therefore 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

Symbol

Parameter

Conditions

Minimum

Typical

Maximum

Unit[a]

Measurement Range

0

10

ppm

Measurement Range

0

600

ppb

Measurement Range

0

180

ppb

RAQ

Refrigeration Air Quality Range

Change rate based on resistance

0

3

Temperature Range

0

25

°C

Repeatability

Variation in sensor module signal

±10

%

T-90

Sensor Module Response Time

Time to change to 90% of end

value

10

sec

[a] The abbreviation ppm stands for “parts per million,” and ppb is an abbreviation for “parts per billion.” For example, 1 ppm equals 1000 ppb.