Fermion: MEMS NH3 Sensor (breakout) Wiki

Introduction

Fermion: MEMS NH3 sensor employs state-of-the-art microelectromechanical system (MEMS) technology, endowing the sensor with compact dimensions (13x13x2.5mm), low power consumption (<20mA), minimal heat generation, short preheating time, and swift response recovery. The sensor can qualitatively measure ammonia concentration, which is suitable for ammonia leakage in cold storage, aquaculture risk control, toilet odor monitoring and other application scenarios. The MEMS series currently encompasses 11 different types of gas sensors (HCHO, CO, CH4, VOC, NH3, H2S, EtOH, Smoke, Odor, H2, NO2), which can be combined as per specific requirements. Please note: This sensor is capable of qualitative measurements only. For quantitative measurements, kindly consider purchasing the Factory-calibrated Gas Sensor.

Precautions for use

Kindly remove the protective film before usage.
To prevent exposure to volatile silicon compounds vapors (such as silicone adhesive, hair gel, silicone rubber, or other locations where volatile silicon compounds are present).
Avoid exposure to high concentrations of corrosive gases (such as H2S, SOX, Cl2, HCl, etc.).
Prevent contamination from alkalis, alkali metal salts, and halogens.
Refrain from prolonged exposure to extreme environments (such as high temperatures, high humidity, high pollution).
Avoid contact with water, condensation, and freezing.
Minimize excessive vibration, impact, and dropping.
Please refrain from employing this module in systems that involve personal safety concerns.
For extended periods of non-usage, it is advisable to preheat the module for at least 24 hours.

Other Mems Gas Sensors

SKU	SEN0563	SEN0564	SEN0565	SEN0566	SEN0567	SEN0568
Gas Type	HCHO	CO	CH4	VOC	NH3	H2S

SKU	SEN0569	SEN0570	SEN0571	SEN0572	SEN0574
Gas Type	EtOH	Smoke	Odor	H2	NO2

Features

Compact size, measuring only 13*13*2.5mm
Low power consumption, minimal heat generation, operating current <20mA
High sensitivity and rapid response recovery
Advanced MEMS technology

Specification

SEN0563-SIZE

Gas detected: NH3
Detection range: 1-300ppm
Operating voltage: 3.3-5V
Operating current: <20mA
Output signal: Analog voltage
Load resistance（RL）：4.7KΩ
Sensitivity: R0(in air)/Rs(in 50ppm NH3) ≥ 3
Operating temperature: -10-50℃
Operating humidity: 15-90%RH (non-condensing)
Lifespan: ≥5 years (in air)
Dimension：13×13 x 2.5mm/0.0.51×0.51x0.1”

Board Overview

Num	Label	Description
1	A	Analog Voltage Output
2	VCC	+
3	GND	-

Tutorial

NOTE: The module needs to be warmed up for more than 5 minutes when powered on for the first time. It is recommended to warm up for more than 24 hours if it has not been used for a long time.

Requirements

Hardware
- DFRduino UNO R3 (or similar) x 1
- MEMS Gas Sensor x 1
- Jumper wires

Software
- Arduino IDE

Connection Diagram

SEN0563

Sample Code

1.Read the sensor raw value

int sensorPin = A0;
int sensorValue = 0;

void setup()
{
  Serial.begin(9600); //Set serial baud rate to 9600 bps
}

void loop()
{
  sensorValue = analogRead(sensorPin);
  Serial.println(sensorValue);
  delay(100);
}

Expected Results

Open the serial port monitor and get the original value of the sensor.

Fermion: MEMS NH3 Sensor (breakout) Wiki - DFRobot