Group: Cubic
Catalog excerpts
SPECIFICATION Product Name: Dual Beam NDIR CO2 Sensor Module Item No.: CM1107T Version: V0.2 Date: May 29, 2020
Open the catalog to page 1Dual Beam NDIR CO2 Sensor Module CM1107T Applications ▪ Ventilation system, VRV ▪ Agriculture, plant growing ▪ Storage ▪ Cold chain transportation Description CM1107T is a multi parameter air quality sensor module, which could real-time monitor and show the measured data of indoor temperature, humidity and CO2 concentration. The CO2 sensor on it adopts NDIR gas sensor technology to detect the CO2 concentration in the air. It is with high accuracy, excellent performance, compact structure and easy to install. Features ▪ NDIR technology with independent intellectual property ▪ Dual beam...
Open the catalog to page 3wavelength in infrared region. When infrared light passed by, the light transmissivity of this gas molecule to certain wavelength can be expressed by Lambert-Beer Law I stands for light transmissivity, I=I0e-kpl i stands for light absorption intensity, i=I0-I= I0 (1- e-kpl) I0: incident light intensity. l: thickness of gaseous medium p: gas concentration k: absorption coefficient
Open the catalog to page 4Typical Application Circuit Application scene: Case 1. UART_TTL 3.3V serial port output Case 2. UART 3.3V electrical level transferred to 5V electrical level communication circuit
Open the catalog to page 6Product Installation 1. In order to ensure airflow diffusion into the sensor inner, make sure the minimum distance between the area of waterproof filter and the other components is 1.5 mm, otherwise, quick response time of the sensor will be affected. Reference as below: Waterproof Filter 2 .To avoid the influence of stress on sensor, please soldering by hand as much as possible when mounting the sensor to the PCB. Reference as below:
Open the catalog to page 71. The data in this protocol is all hexadecimal data. For example,“46” for decimal[70]. 2. [xx] is for single-byte data (unsigned, 0-255); for double data, high byte is in front of low byte. 3. Baud rate: 9600; Data Bits: 8; Stop Bits: 1; Parity: No 4. Time interval required for UART data reading:>1s Sending format of upper computer:
Open the catalog to page 84. Detail Description of RS232 Protocol 4.1 Read Measured Result of CO2 Send: 11 01 01 ED Response: Statement: 1.CO2 value=(DF1*256+ DF2) (ppm) 2. [DF3] & [DF4] : Reserved 3.Temperature = (DF5*256+ DF6)- 4685)/100 (℃) 4.Humidity= ((DF7*256+ DF8)- 600)/100 (%RH) 5. [DF9]~[DF12] reserved 4.2 Open/Close ABC and Set ABC Parameter Send: 11 07 10 DF1 DF2 DF3 DF4 DF5 DF6 CS Response: 16 01 10 D9 Explanation: DF1: Reserved, default 100 (0x64) DF2: Open/close auto calibration (0: open; 2: close) DF3: Calibration cycle (1-30 days optional, default is 7 days) DF4: High base value (2 bytes) DF5: Low...
Open the catalog to page 94.3 Calibration of CO2 Concentration Send: 11 03 03 DF1 DF2 CS Response: 16 01 03 E6 Function: Calibration of CO2 concentration Note: 1. Calibration target value = DF1*256+DF2 Unit: PPM, range (400-1500ppm) 2. Before calibration, please make sure CO2 concentration in current ambient is calibration target value. Keeping this CO2 concentration for two 2 minutes, then began calibration. Example: When you need to calibrate CO2 concentration of the sensor to 600ppm, send command: Send: 11 03 03 02 58 8F Hex is converted to decimal: 02 is 02; 58 is 88 CO2 concentration =02*256+88 = 600ppm 4.4...
Open the catalog to page 10Tray Size After-Sales Services and Consultancy Cubic Sensor and Instrument Co.,Ltd. Tel: +86 (0)27 81628827 Fax: +86 (0)27 81628821 Add: Fenghuang No.3 Road, Fenghuang Industrial Park, Eastlake Hi-tech Development Zone, Wuhan 430205, China E-mail: info@gassensor.com.cn
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