SKU: SENS-2994
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DFRobot Fermion MEMS Formaldehyde Gas Sensor (0–3 ppm) - Analog Voltage Output

₹669.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Fermion MEMS Formaldehyde (HCHO) Gas Sensor is a compact breakout module designed for qualitative detection of formaldehyde concentrations from 0 to 3 ppm. It operates on a 3.3V to 5V supply, providing an analog voltage output compatible with Arduino, Raspberry Pi, and other microcontroller platforms for air quality monitoring applications.

Features

  • Advanced MEMS technology for compact size (13x13x2.5mm) and low power consumption (<20mA).
  • Qualitative detection of formaldehyde (HCHO) gas within a 0-3 ppm range.
  • Analog voltage signal output for easy integration with ADCs and microcontrollers.
  • Wide operating temperature range from -10°C to 60°C.
  • Extended operational lifespan of ≥3 years in typical air environments.

Out of stock

Description

This Fermion series sensor utilizes micro-electromechanical system (MEMS) technology to achieve a miniature footprint, minimal heat generation, and rapid response and recovery times. It is engineered for qualitative assessment of formaldehyde gas concentration, making it suitable for integration into systems where trend monitoring is required rather than precise quantitative measurement.

The sensor requires a brief preheating period for stable operation and features a robust design for use in various environmental conditions, though it must be protected from corrosive gases, condensation, and mechanical shock. Its analog output provides a voltage signal proportional to gas concentration, simplifying interface with common data acquisition systems.

Key Features

  • State-of-the-art MEMS fabrication for high sensitivity and miniaturization.
  • Low operating current (<20mA) enables use in battery-powered portable devices.
  • Fast response and recovery time for dynamic air quality monitoring.
  • Compact form factor (13x13x2.5mm) ideal for space-constrained applications like wearables.
  • Analog voltage output for straightforward connection to microcontroller ADC pins.
  • Designed for a long service life of 3+ years under normal atmospheric conditions.
  • Broad compatibility with 3.3V and 5V logic systems.

Applications

  • Indoor air quality monitors and smart home environmental sensors.
  • Integration into air purifiers and HVAC systems for formaldehyde level trend monitoring.
  • Portable personal air quality detectors and wearable wellness devices.
  • Educational kits for environmental sensing and IoT projects.

Technical Specifications

Item TypeGas Sensor
Operating Voltage3.3V to 5V DC
Detecting Range0 - 3 ppm
Detection GasFormaldehyde (HCHO)
Max. Operating Current< 20 mA
Signal OutputAnalog Voltage
Operating Temperature-10°C to 60°C
Operating Humidity15% to 90% RH (non-condensing)
Life Cycle≥ 3 years (in air)
Sensitivity (R0/Rs)≥ 1.8 (in 0.4 ppm HCHO)
Dimensions (L x W x H)13 mm x 13 mm x 2.5 mm

Frequently Asked Questions

What is the output signal of this formaldehyde sensor, and how do I connect it to an Arduino?

The sensor provides an analog voltage output. Connect the VCC pin to 3.3V or 5V (matching your Arduino's logic level), GND to ground, and the analog output pin to one of the Arduino's analog input pins (e.g., A0). The output voltage will vary with the detected formaldehyde concentration, which can be read using the analogRead() function.

Does this sensor provide a precise quantitative measurement of formaldehyde concentration?

No, this MEMS sensor is designed for qualitative measurement and trend monitoring of formaldehyde levels. The analog output indicates relative concentration changes within the 0-3 ppm range. For precise, calibrated quantitative measurement, a more advanced NDIR or electrochemical sensor with specific calibration would be required.

What are the key precautions for using and storing this MEMS gas sensor?

Avoid exposure to high concentrations of corrosive gases (H2S, SOx, Cl2), volatile silicon compounds (from adhesives, sealants), water, condensation, and freezing temperatures. Remove the protective film before use. For extended storage, a 24-hour preheating period in clean air is recommended before returning to operational use to stabilize the sensing element.

Package Includes

  • 1 x DFRobot Fermion MEMS Formaldehyde (HCHO) Gas Detection Sensor (Breakout)
  • 1 x 2.54mm pitch header pin strip

Additional Information

Weight 0.001 kg
Dimensions 1.3 × 1.3 × 0.25 cm