Catalog excerpts
S P E C I F I C AT I O N Shenzhen MemsFrontier Electronics Co., Ltd.
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MTP40-D NDIR R C O 2Sensor Module N D I CO 2 传感器模块 Specifications MEMSF MTP40-D-5K CO 2 Module Target Gas Operating Principle Measurement Range Measurement Interval Response Time Operating Temperature Operating Humidity Storage Temperature Power Supply Power Consumption 300mA peak, 4mA normal, 13mA average Life Expectancy Serial Communication Alarm Output >1000ppm output to 1, <800ppm output to 0, open-drain output with pull-up resistor, the pin cannot sink any current Self Calibration Cycle Initial time is 24 hours, later is 7 days Absolute Maximum Ratings Parameter Ambient Storage...
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MTP40-D NDIR R C O 2Sensor Module N D I CO 2 传感器模块 Terminals Description Pin Function Electrical Specification Power Supply Minus Terminal Supply Plus Terminal The internal LDO output of the sensor is usually 3.3V+/-2%. Generally used for serial communication level conversion. Unprotected against reverse connection, input voltage range: 4.2V---5.5V Output voltage: 3.3V+/-2% No overcurrent protection Maximum output current: 6mA Communication Pins Host-TX(Pin6) /IIC-SDA The TX pin of the UART of the host system is usually the TX of the customer's MCU, or the SDA of the IIC function. Usually...
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MTP40-D NDIR R C O 2Sensor Module N D I CO 2 传感器模块 Calibration Function The MTP40 module is a precision optical module. Due to various reasons such as transportation, installation, welding, etc., the measurement of the module will cause a certain drift, making influence to the accuracy. The module has a built-in self-calibration algorithm, which can automatically correct the measurement error periodically, so that the module always maintains a relatively good measurement accuracy. The module selfcalibration cycle defaults to 7 days (168 hours), which can be adjusted by instructions (24 hours...
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MTP40-D NDIR R C O 2Sensor Module N D I CO 2 传感器模块 2. Basic Control Protocol Function Name Send by Set air pressure MCU paramReturn by eters Module Read the Send by MCU current pressure Return by value Module Send by MCU Read gas concentration Return by value Module Single point correction function (with reference concentration) Read single point correction status The range of atmospheric pressure is 700-1100 (16bit integers). Gas concentration value(32bit integers ) and Data valid flag (8bit) Checksum 0x00: Valid; 0xFF: the data is unavailable Checksum The atmospheric pressure (16bit...
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MTP40-D NDIR R C O 2Sensor Module N D I CO 2 传感器模块 3. Quick Guide: ①Set air pressure parameters Send：0x42 0x4D 0xA0 0x00 0x01 0x00 0x02 0x03 0xF5 0x02 0x2A ③Read gas concentration value Send:0x42 0x4D 0xA0 0x00 0x03 0x00 0x00 0x01 0x32 Data valid bit is 0xFF,the data is unavailable: IIC Instruction Descriptions The module operates in IIC slave mode and can be connected to an external MCU with a pull-up resistor inside the module. The slave address is: 0x32 (7-bit address) The write operation address is: 0x64 The read operation address is: 0x65 Host sending timing: 1.Send a start signal;...
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MTP40-D NDIR R C O 2Sensor Module N D I CO 2 传感器模块 PWM Function Descriptions The cycle of the PWM is 1004ms; High level output 2ms in the initial stage; The central cycle is 1000ms; Low level output 2ms at the end stage. Calculation formula for obtaining the current Co 2 Concentration value through PWM: Cppm = 5000*(TH-2ms)/(TH+TL-4ms); Cppm is the calculated CO2 concentration value, the unit is ppm; TH is the time when the output is high in an output cycle; TL is the time when the output is low in one output cycle. The communication protocol was edited. The alarm values were edited....
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MemsFrontier NDIR Sensor Module12 Pages
