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NDIR CO2 Sensor Module-CM1106H-NS

NDIR CO2 Sensor Module-CM1106H-NS
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SPECIFICATION Product Name: NDIR CO2 Sensor Module Item No.: CM1106H-NS Version: V0.4 Date: May 26, 2020

NDIR CO2 Sensor Module CM1106H-NS Applications ▪ HVAC industry ▪ IAQ monitor ▪ Air purifier ▪ Automotive ▪ IoT devices ▪ Plant growth Description Infrared carbon dioxide CO2 sensor CM1106H-NS can be used to detect CO2 concentration of indoor air by adopting advanced non-dispersive infrared technology (NDIR). It is widely used in ventilation system, air conditioner, air purifier, IAQ monitor, agriculture, plant cultivation and cold-chain, etc. Features ▪ NDIR technology with independent intellectual property ▪ Temperature calibration within whole measurement range ▪ Long life span,...

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Specifications Single Beam NDIR CO2 Sensor Specification Operating principle Non-dispersive infrared (NDIR) Measurement range Working temperature Working humidity Storage temperature Storage humidity Sampling frequency Time to first reading Power supply Ripple wave Working current Signal output Life span Maintenance-free for normal indoor application with Auto-calibration Note 1：Sensor is designed to measure in the range 0~2000ppm (PWM), 0-10000ppm (UART) with specified in the table. Nevertheless exposure to concentrations below 400ppm may result in incorrect operation of ABC algorithm and...

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Dimensions and Connector 1. Dimensions (Unit mm, tolerance ±0.2 mm) Power supply input (4.5V-5.5V) Power supply output (3.3V/100mA) Power supply input (GND) Alarming (Reserved) RS485 control site （Reserved） Manual calibration

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Typical Application Circuit Case1. (1) UART_TTL 3.3V output 5V level and 3.3V level conversion circuit

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Description of Calibration Auto Calibration: Rough installing and influence of transportation might result in reducing of sensor measuring accuracy and baseline drift, sensor will correct the drift by the built-in self-correcting logic, and the auto baseline correction period is 24h+7 days. Powering on the sensor for 24 hours continuously, it will record the lowest CO2 concentration measurement value during the 24 hours, which will be regarded as baseline (400ppm) when sensor do auto calibration after the 24 hours working, and then the sensor will enter regular 7 days correction cycle, auto...

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(1) Baud rate: 9600, Data Bits: 8, Stop Bits: 1, Parity: No, Flow Control: No (2) The data of this protocol are all hexadecimal data. For example, "46" is decimal [70]; (3) [xx] is single-byte data (unsigned, 0-255); double-byte data high byte first, low byte last; 2. UART protocol format Sending format of upper computer

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4. Detail Description of UART Protocol 4.1 Read Measured Result of CO2 Send: 11 01 01 ED Response: 16 05 01 DF1- DF4 [CS] Function: Read measured result of CO2 (Unit: ppm) Note：CO2 measured result = DF1*256 + DF2 Example: Response: 16 05 01 02 58 00 00 8A Explanation: Hex is converted to decimal: 02 is 02; 58 is 88 CO2 concentration=02*256+88 = 600ppm 4.2 CO2 concentration value single point calibration Send：11 03 03 DF1 DF2 CS Response：16 01 03 E6 Function：CO2 concentration value single point calibration Note： 1. Single point calibration target value = DF1*256 + DF2. The unit is in ppm and...

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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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