MSM-TPCVF

Overview

Date 2021-7-15

Features

⚫ The laser scattering principle measures the concentration of particulate matter

⚫ Measurement of formaldehyde and TVOC by electrochemical and semiconductor principles

⚫ Measurement of carbon dioxide by infrared non-spectral principle

⚫ Internal integrated temperature and humidity detection chip

⚫ Highly integrated and convenient for user design

MSM-TPCVF is a multi in one gas sensor module, which can measure multiple gas indicators at the

same time. The sensor module is equipped with laser particle sensor, infrared non spectroscopic

carbon dioxide sensor, electrochemical formaldehyde sensor and semiconductor TVOC sensor, which

are respectively used to obtain particle concentration, carbon dioxide, formaldehyde and TVOC

concentration. The sensor module also contains a temperature and humidity sensor chip. Various

parameters will be uniformly output in the form of digital interface. By optimizing the sensor layout

structure, the sensor module not only ensures that the size of the sensor module is small enough, but

also ensures the sensitivity of each sensor.

Date 2021-7-15

Table 1-6

Table 1 Technical index of particulate matter concentration

Parameter Index Unit

Particulate matter measurement range 0.3~1.0 ； 1.0~2.5 ； 2.5~10 μm

Particulate count efficiency 50%@0.3 μm

Effective range of particulate mass concentration (PM2.5 standard value)

Maximum range of particulate mass concentration (PM2.5 standard value) 1

≥1000 μg/m³

Resolution of particulate matter mass concentration 1 μg/m³

Consistency of particulate matter mass concentration (PM2.5 standard value) 2

±10%@100~500 μg/m³

±10 μg/m³@0~100 μg/m³

Table 2 HCHO Concentration technical index

Detection accuracy ±0.05 mg/m³ or ±13% maximization

Table3 TVOC Concentration technical index

Effective range

Resolution

Table4 CO2 Concentration technical index

Table 5 Technical indexes of temperature and humidity

Temperature measuring

range -10~+60 ℃

Temperature measurement

resolution 0.1 ℃

Humidity measuring range 0~99 ％

Humidity measurement

resolution 0.1 ％

Table 6 Basic technical index

Operating temperature

Operating humidity range 0~99%

Table 2 Interface diagram

resistance)

Installation precautions

a) When applied to fresh air purifier products, the sensor should not be

directly placed in the air duct of the purifier as far as possible. If it

cannot be avoided, an independent structural space should be set

up separately, and the sensor should be placed in it to isolate it from

the air duct of the purifier. If it is unavoidable, please try to place the

b) When applied to fixed detection equipment, the sensor position shall be more

than 20cm above the ground. Otherwise it can be polluted by large dust particles or even flocs near the ground, causing the fan to be wound and stop rotating.

c) When the sensor is applied to outdoor fixed equipment, the

protection against sandstorms, rain and snow, willow catkins, etc.

shall be completed by the equipment user.

d) The sensor is an integral element, and users should not disassemble

it, including the metal shielding shell, to prevent irreversible damage.

Other precautions

a) The sensor module data ensures the consistency between the

factory individuals, and does not take the third-party testing

instrument or data as the comparison standard. If the user wants the

final measurement results to be consistent with a third-party testing

equipment, the user can carry out data fitting according to the actual

collected results.

b) This sensor is suitable for ordinary indoor environment. If the device

is used in the following environments, protective measures should

be applied to the sensor. Otherwise, data consistency may be

decreased due to excessive dust, oil, or water accumulation ：

⚫ PM2.5 annual dust concentration is greater than 300 MCG/m3 for more than 50% of the time, or greater than 500 MCG/m3 for more than 20% of the time, such as smoking rooms

⚫ Fume environment, such as kitchen

⚫ High water mist environment, such as hot springs, bathrooms

⚫ The local temperature is too high or the sunlight is direct

⚫ outdoors

The last two bytes are the 16bit check code, which is the sum of the first five bytes

3 0x26 Length code low 8 bits, length code = data segment (n) + check byte (2)

4 The value of PM1.0 (standard particulate matter CF=1) is 8 digits higher

5 PM1.0 (standard particulate CF=1) is 8 digits lower,

The unit is ug/m³

6 PM2.5 (standard particulate matter CF=1) was 8 digits higher

7 PM2.5 (standard particulate matter CF=1) is 8 digits lower, The unit is ug/m³

8 The value of PM10 (standard particulate matter CF=1) is 8 digits higher

9 The value of PM10 (standard particulate CF=1) is 8 digits lower, in ug/m³

11 PM1.0 (atmospheric environment) value is 8 digits lower, ug/m³

12 PM2.5 (atmospheric environment) is 8 digits higher

13 PM2.5 (atmospheric environment) is 8 digits lower (ug/m³)

The value of PM10 (atmospheric environment) is 8 digits higher

The value of PM10 (atmospheric environment) is 8 digits lower, in ug/m³

The number of particles over 0.3 micron (0.1 liters) was eight higher

The number of particles larger than 0.3 micron (0.1 liters) was 8 lower

The number of particles larger than 0.5 micron (0.1 liter) was 8 higher

The number of particles larger than 0.5 micron (0.1 liters) was 8 lower

The number of particles over 1.0 micron (0.1 liter) was 8 higher

The number of particles larger than 1.0 micron (0.1 liters) was 8 lower

The number of particles over 2.5 microns (0.1 liters) was eight higher

The number of particles larger than 2.5 microns (0.1 liters) was 8 lower

The number of particles over 5.0 microns (0.1 liters) was 8 higher

The number of particles larger than 5.0 microns (0.1 liters) was 8 lower

The number of particles over 10.0 microns (0.1 liters) was 8 higher

The number of particles over 10.0 microns (0.1 liters) was 8 lower

28 The TVOC value is 8 bits higher

The TVOC value is 8 digits lower (unit PPM)

Note: Final value = 16-digit hexadecimal number converted to adecimal number /100

30 The TVOC value is 8 bits higher

The TVOC value is 8 digits lower, in mg/m³ Note: Final value = 16-digit hexadecimal number

converted to adecimal number /100

32 The HCHO value is 8 bits higher

The HCHO value is 8 digits lower (mg/m3) Note: Final value = 16-digit hexadecimal number converted to adecimal number /100

34 The CO2 value is 8 digits higher

35 The CO2 value is 8 digits lower (unit PPM)

36 The temperature value is 8 bits higher

The temperature value is 8 digits lower. Note: Final value = 16-digit hexadecimal number converted to adecimal number /10

38 The humidity value is 8 digits higher

The humidity value is 8 digits lower. Note: Final value = 16-digit hexadecimal number converted to adecimal number /10

40 The check word is 8 bits high

41 Check word lower 8 bits, 16bit check word = Sum of all bytes before the check word itself

concentration value obtained by density conversion of industrial metal

particulate matter as equivalent particle, which is suitable for industrial

production workshops and other environments; The mass concentration value

of atmospheric particulate matter is converted from the main pollutants in the

air as equivalent particles, which is suitable for ordinary indoor and outdoor