ZMOD4450 Datasheet

© 2019 Integrated Device Technology, Inc.

8

October 30, 2019

7. Sensor Module Characteristics

7.1 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 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 response time.

The ZMOD4450 is also able to detect some safety-relevant toxic gases; however, the sensor 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 IDT

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

Humidity Range

Non-condensing

0

95

% RH

Temperature Range

0

25

°C

Repeatability

Variation in sensor signal

±10

%

T-90

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.