MH-Z19 Winsen

MH-Z19 NDIR infrared gas module is a common type, small size sensor, using the non-dispersive infrared (NDIR) principle to detect the existence of CO 2 in the air, with good selectivity, non-oxygen dependent and long life. The built-in temperature sensor can do temperature compensation, and it has digital output and analog voltage output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.

Product Details

Working voltage - 3.6~ 5.5 V DC
Average current < 18 mA
Interface level - 3.3 V
Measuring range - 0 ~ 0.5% VOL optional
Output signal - UART, PWM
Preheat time - 3 min
Response Time - T90 < 60 s
Working temperature - 0 ~ 50 ℃
Working humidity - 0~ 95% RH(No Condensation)
Dimension - 33 mm×20 mm×9 mm(L×W×H)
Weight - 21 g
Lifespan > 5 years
Accuracy - ±(50ppm + 5%reading value)
Target Gas Measuring Range Accuracy Mark


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