SCD30SAMPLEEXT datasheet(2/8 Pages) SENSIRION

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1 Sensor Specifications1

CO2 Sensor Specifications

Parameter

Conditions

Value

CO2 measurement range

I2C, UART

PWM

0 – 40’000 ppm

0 – 5’000 ppm

Accuracy2

400 ppm – 10’000 ppm

± (30 ppm + 3%MV)

Repeatability3

400 ppm – 10’000 ppm

± 10 ppm

Temperature stability4

T = 0 … 50°C

± 2.5 ppm / °C

Response time5

63%

20 s

Accuracy drift over lifetime6

400 ppm – 10’000 ppm

ASC field-calibration algorithm activated and

SCD30 in environment allowing for ASC, or

FRC field-calibration algorithm applied.

± 50 ppm

Table 1: SCD30 CO2 sensor specifications

Humidity Sensor Specifications7

Parameter

Conditions

Value

Humidity measurement range

0 %RH – 100 %RH

Accuracy8

25°C, 0 – 100 %RH

± 3 %RH

Repeatability3

± 0.1 %RH

Response time5

63%

8 s

Accuracy drift

< 0.25 %RH / year

Table 2: SCD30 humidity sensor specifications

Temperature Sensor Specifications7

Parameter

Conditions

Value

Temperature measurement range9

- 40°C – 70°C

Accuracy8

0 – 50°C

± (0.4°C + 0.023 × (T [°C] – 25°C))

Repeatability3

± 0.1°C

Response time5

63%

> 10 s

Accuracy drift

< 0.03 °C / year

Table 3: SCD30 temperature sensor specifications

Default conditions of T = 25°C, humidity = 50 %RH, p = 1013 mbar, VDD = 3.3 V, continuous measurement mode with measurement rate = 2 s apply to values

listed in the tables, unless otherwise stated.

Deviation to a high-precision reference in the calibrated range (400 – 10’000 ppm) of the SCD30. Accuracy is fulfilled by > 90% of the sensors after calibration.

Rough handling, shipping and soldering reduces the accuracy of the sensor. Full accuracy is restored with FRC or ASC recalibration features. Accuracy is based

on tests with gas mixtures having a tolerance of ± 1.5%.

RMS error of consecutive measurements at constant conditions. Repeatability is fulfilled by > 90% of the sensors.

Average slope of CO2 accuracy when changing temperature, valid at 400 ppm. Fulfilled by > 90% of the sensors after calibration.

Time for achieving 63% of a respective step function. Response time depends on design-in, heat exchange and environment of the sensor in the final application.

CO2 concentrations < 400 ppm may result in sensor drifts when ASC is activated. For proper function of ASC field-calibration algorithm SCD30 has to be exposed

to air with CO2 concentration 400 ppm regularly.

Design-in of the SCD30 in final application and the environment impacts the accuracy of the RH/T sensor. Heat sources have to be considered for optimal

performance. Please use integrated on-board RH/T compensation algorithm to account for the actual design-in.

Deviation to a high-precision reference. Accuracy is fulfilled by > 90% of the sensors after calibration.

RH/T sensor component is capable of measuring up to T = 120°C. Measuring at T > 70°C might result in permanent damage of the sensor.

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