MIKROE-2767

MIKROE-2767 Datasheet

PID MIKROE-2767

Part	Datasheet
MIKROE-2767	MIKROE-2767 (pdf)

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Ozone 2 click PID MIKROE-2767 Ozone 2 click carries an MQ131 sensor for Ozone O3 . The sensor outputs an analog voltage, which is converted by the onboard MCP3551 22-bit ADC converter or it is sent to the microcontroller via AN pin on the mikroBUS , depending on the position of ADC SEL. jumper. The click is designed to run on 5V power supply. It communicates with the target microcontroller over SPI interface or AN pin on the mikroBUS line. Note The click carries TXB0106 Voltage Translator. For selecting the interface voltage level, use the onboard jumper, and choose between the 3.3V and 5V. For more information, see the Jumpers and Settings table below. MQ131 sensor features MQ131 is a semiconductor sensor for Ozone O3 . The gas sensing layer on the sensor unit is made of Tin dioxide, which has lower conductivity in clean air. The sensor’s conductivity is higher with the rising of the gas concentration. The sensor consists of micro Al2O3 ceramic tube, Tin dioxide sensitive layer, measuring electrode and heater fixed into stainless steel net. The heater provides necessary conditions for the proper functioning of the sensitive components. Calibrating the sensor To calibrate the sensor for the environment you’ll be using it in, Ozone 2 click has a small potentiometer that allows you to adjust the Load Resistance of the sensor circuit. For precise calibration, the sensor needs to preheat once powered up, it takes 48h to reach the right temperature . Specifications Type It can be used in different Ozone concentration detectors for air quality control, or for gas leak detection. modules MQ131 sensor, MCP3551 Key Features Ozone concentration ppm, communicates over the AN pin or ADC MCP3551, sensitivity Rs in air /Rs in 50 ppm onboard potentiometer for calibration Interface Input Voltage 3.3V or 5V Compatibility mikroBUS Click board size L x mm Pinout diagram This table shows how the pinout on Ozone 2 click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns . Notes Notes Analog pin AN 1 AN PWM 16 NC 2 RST INT MCP3551 chip select CS 3 CS TX SPI clock pin SCK 4 SCK RX SPI slave data out pin SDO 5 MISO SCL NC 6 MOSI SDA Power supply +3.3V 7 3.3V 5V Ground GND 8 GND Power supply Ground Jumpers and settings Designator Name Default Position Default Option VCCIO SEL. Left Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V ADC SEL. Left

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Ozone 2 click

PID MIKROE-2767

Ozone 2 click carries an MQ131 sensor for Ozone O3 . The sensor outputs an analog voltage, which is converted by the onboard MCP3551 22-bit ADC converter or it is sent to the microcontroller via AN pin on the mikroBUS , depending on the position of ADC SEL. jumper. The click is designed to run on 5V power supply. It communicates with the target microcontroller over SPI interface or AN pin on the mikroBUS line. Note The click carries TXB0106 Voltage Translator. For selecting the interface voltage level, use the onboard jumper, and choose between the 3.3V and 5V. For more information, see the Jumpers and Settings table below.

MQ131 sensor features

MQ131 is a semiconductor sensor for Ozone O3 . The gas sensing layer on the sensor unit is made of Tin dioxide, which has lower conductivity in clean air. The sensor’s conductivity is higher with the rising of the gas concentration. The sensor consists of micro Al2O3 ceramic tube, Tin dioxide sensitive layer, measuring electrode and heater fixed into stainless steel net. The heater provides necessary conditions for the proper functioning of the sensitive components.

Calibrating the sensor

To calibrate the sensor for the environment you’ll be using it in, Ozone 2 click has a small potentiometer that allows you to adjust the Load Resistance of the sensor circuit. For precise calibration, the sensor needs to preheat once powered up, it takes 48h to reach the right temperature .

Specifications

Type

It can be used in different Ozone concentration detectors for air quality control, or for gas leak detection.
modules

MQ131 sensor, MCP3551

Key Features Ozone concentration ppm, communicates over the AN pin or ADC MCP3551, sensitivity Rs in air /Rs in 50 ppm onboard potentiometer for calibration

Interface

Input Voltage 3.3V or 5V Compatibility mikroBUS Click board size L x mm

Pinout diagram

This table shows how the pinout on Ozone 2 click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns .

Notes

Notes

Analog pin

AN 1 AN PWM 16

NC 2 RST INT

MCP3551 chip select CS 3 CS TX

SPI clock pin

SCK 4 SCK RX

SPI slave data out pin SDO 5 MISO SCL

NC 6 MOSI SDA

Power supply
+3.3V 7 3.3V 5V

Ground

GND 8 GND

Power supply Ground

Jumpers and settings

Designator Name

Default Position

Default Option

VCCIO SEL.

Left

Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V

ADC SEL.

Left

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Datasheet ID: MIKROE-2767 649426