Zhengzhou Winsen Electronics Technology Co., Ltd.
www.winsen-sensor.com
MH-440D NDIR Infrared CH4 Sensor (V2.7)
1. Introduction
MH-440D infrared gas sensor is a miniature universal intelligent sensor, which
adopts NDIR theory to detect concentration of CH4 in air and has good
selectivity, stable performance, long life, also is independent of Oxygen. The
inside temperature sensor could be used for temperature compensation. This
miniature infrared gas sensor is developed by the tight integ.
NDIR Infrared CH4 Sensor
Zhengzhou Winsen Electronics Technology Co., Ltd.
www.winsen-sensor.com
MH-440D NDIR Infrared CH4 Sensor (V2.7)
1. Introduction
MH-440D infrared gas sensor is a miniature universal intelligent sensor, which
adopts NDIR theory to detect concentration of CH4 in air and has good
selectivity, stable performance, long life, also is independent of Oxygen. The
inside temperature sensor could be used for temperature compensation. This
miniature infrared gas sensor is developed by the tight integration of mature
infrared absorbing gas detection technology, micro machine workout and
superior circuit design.
It is convenient in use and also instead of catalytic component directly, widely
used in various occasions with flammable and explosion hazard gas.
2.Features High sensitivity, high resolution, low power consumption Output method: UART, analog voltage signal Temperature compensation, excellent linear output Excellent stability, Long lifespan Anti-poisons, anti-vapor interference Can replace catalytic type gas sensor directly
3.Applications
Widely used for HVAC refrigeration, air monitoring indoor, industrial-process control and safety protection,
agriculture and animal husbandry.
4.Main Parameters
Fig1.Technical Parameters
Detection Gas
Methane(CH4)
Working Voltage
3.6~5V DC
Average Current
<85mA
Interface Level
3.0V
Detection range
0~10%vol(selectable, refer fig2.)
Output Signal
UART 0.4~2V DC
Warm-up time
3 min
Response time
T90<30s
W.