MH 440 infrared CH4 gas sensor module

1. Introduction MH-440V/D 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, widely used in various occasions with flammable and explosion hazard gas. 2. Features and main technical parameters 2.1 Features High sensitivityStandard output and signal outputMiniature figureFast response and resumeTemperature compensationGood stabilityLong lifeAnti-vapor interferenceInstantly convert catalytic theory meter into infrared detection meter 2.2 Main technical parameters Working voltage3.5 5.5V dcWorking current75 85mADetection range0 5%vol0 100%vol optionalOutput signal range0.4 2V dcResolution1%FSDWarm-up time90sResponse timeT90<30sRepeatabilityZero < ±100ppmSPAN <±500ppmLong-term driftZero < ±300ppm/monthSPAN < ±500ppm/monthTemperature range-20°C 50°CHumidity range0 95%RHLifetime>5 yearsDimension20*16.6Weight15g