MQ138 VOC HCHO Volatile Organic Gas Detection Sensor Module

Description:

Mainly used for qualitative detection, for home, industrial environments, portable gas detection equipment, suitable for , tested concentration range 1-100ppm.
The module with level signal output, with alarm signal indicators.
The sensor module with analog signal output voltage range : 0-5V
Low level signal output effective, can drive the PNP triode, also can connect the single-chip IO port.
The analog output voltage increases with the concentration, the higher the concentration the higher the voltage.
It has high sensitivity to and volatile organic gas.
Long service life and reliable stability.
It has response recovery after preheating.
With mounting holes for easy install.
The probe can be plugged and drawn for testing.
Module with temperature compensation function, more reliable adaptability.

Specification:

Heating voltage: DC 5 + 0.2V
Working current: 180mA
Circuit voltage: DC 5V (Max DC 24V)
Load resistance: 10K (adjustable)
Test concentration range: 1-100ppm
Clean air voltage: ≤1.5V
Sensitivity: ≥3%
Response time: ≤1S
Response time: ≤30S
Component power consumption: ≤0.9W
Working temperature: -10 ~ 50℃
Humidity: 95% RH
Size: approx. 35 x 40 x 30mm
Weight: 15g

Package Includes:

1 Piece Volatile Organic Gas Sensor Module