All in one air quality sensor module (CO2+VOC+HCHO+Temperature+Humidity）

PN: RK14Z

CO2, TVOC, HCHO, Temperature, Humidity

Product Details

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https://www.rainbowsensor.cn

All in one integrated air quality sensor module (CO2+VOC+HCHO+Temperature+Humidity）

The multi in one air quality sensor module based on MEMS gas sensors is used to test the ambient temperature and humidity and the content of harmful substances in the air, and provide the ambient temperature and humidity and the predicted harmfulnessThe relative equivalent concentration value of the substance, and the test data is communicated through I2C or UART interface.The surface of the MEMS gas sensor can be protected by a filter membrane,The air quality sensor module can be assembled with patch or cable as required.

Feature
 Comprehensive and reliable assessment of temperature, humidity and air quality
 Built-in temperature compensation and humidity compensation algorithm
 High sensitivity and fast response
 Very low power consumption (< 66mW)
 Small size (17.8mm×15.2mm×2.5mm)
 Intelligent automatic baseline calibration, reference value storage
 The reference value can be reset
 Robust design, excellent long-term stability
 Highly flexible assembly method and communication interface

Size:

Remarks: IIC interface needs external 4.7kΩ pull-up resistor

Power requirements

Item	Specification
Voltage	3.3V±0.1V, max. 20mV ripple
Power consumption	Max. 66mW @3.3VDC (20mA)
Test interval	1 Sec.

Communication

UART Series port

Item	Specification
Baud rate	9600 bits/s
Data bit	8
Parity bit	None
Stop bit	1
Protocol	1.Master send OxFF 52 01 01 AC to reset baseline to current value. 2.Master send OxFF 67 01 01 97to automatic upload data packet once per Sec.. Resend it again to restore to query mode. 3.Master send OxFF 61 02 01 9C in query mode to acquire 13 bytes data packet.

12C bus

Item	Specification
Frequency	Standard Mode: 100kbits/s
Module address	0xA2 (7 bit address mode, shift left by 0x51)
Module output	Acquire 13 bytes data packet by do read operation
Benchmark reset	Reset baseline to current value by do write OxFF 52 01 01 AC operation

Data Packet

Byte	Name	Description
0	Packet Head	0xFF
1-2	eCO2 (ppm)	Data[1]*2⁸+Data[2]
3	Status	0x00: OK 0x01: Heating 0x02: Error
4-5	Temperature(℃)	(Date[4]*2⁸+Data[5] -669)/10
6-7	Humidity(%RH)	(Date[6]*2⁸+Data[7] -125)/10
8-9	TVOC(ug/m³)	Data[8]*2⁸+Data[9]
10-11	HCHO(ug/m³)	Data[10]*2⁸+Data[11]
12	Check Code	~(Sum(D[1]:D[11]))+1 (Take the last 8 bits)

Environmental Specifications

Item	Specification
Working temperature	-10 ~ +60 ℃
Working humidity	5 ~95% RH, non-condensing
Storage temperature	-40 ~ 85 ℃
Storage humidity	5 ~95% RH, non-condensing

Attentions

Please read carefully and abide by the following terms to avoid product data errors and prevent product damage.

1.The air quality sensor module must be reflow soldered in a neutral atmosphere to avoid soldering flux vapor. When performing reflow soldering, the soldering furnace should have sufficient flow of clean air to keep the soldering furnace air clean and prevent the soldering atmosphere from polluting the sensitive layer of the product. The recommended maximum soldering temperature should not exceed 260℃. The recommended manual soldering condition is the highest temperature of 350℃ within 5 seconds.

2. Avoid exposing the product to high-concentration organic solvent vapor and organic silicon vapor to prevent poisoning of sensitive materials

3. The MEMS gas sensor should be placed in the space protected by the filter membrane to prevent the influence of water and dust.

4. Each time the power is turned on, the resistance value of the sensitive electrode of the MEMS gas sensor will have a continuous increase process. The length of this process depends on the working history of the sensor. The longer the power-off time, the longer the process will take; In order to ensure the accuracy of the measurement results after a long-term power failure, this product should be used for measurement at least 60 minutes after power-on.

5. When handling the product, it is recommended to use ESD protection equipment.

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Company Product Follow us

Jinan Rainbow Technology is a high-tech enterprise with MEMS sensor and New energy as its core. It was established in Jinan, Shandong, China and has an R&D center in New York, USA.

Our products will play a critical role in the transition to a clean energy and green economy, it can be widely used in many fields such as Hydrogen Fuel cell, medical devices, air purification, gas detector, lithium battery safety monitoring, Hydrogen leak detection, smart home, and security IoT to meet the needs of safety, health, and energy conservation.

Through continuous technological innovation, we powering the Clean Energy transition, and provide our customers with more competitive materials. We have core capabilities in design, manufacturing and testing to provide customers with high precision and highly reliable products and One-Stop Solutions.
Our company has core invention patents and has passed ISO9001 quality system certification. Our products comply with RoHS and REACH environmental protection standards.

With the goal of standing at the forefront of technology, we are committed to promoting the development of Hydrogen energy with the spirit of "protecting homes with core technology and innovating to change lives".