Principle Introduction:
MH-Z280B NDIR infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO 2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature compensation; and it has UART output and PWM output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.
Applications :
MH-Z280B NDIR infrared gas module is widely used in
* HVAC refrigeration
*Indoor air quality monitoring.
*Smart home appliances
*School
*Air cleaner
Technical parameters :
| Product Model | MH-Z280B |
| Target Gas |
CO2 |
| Working voltage | 4.5~ 5.5 V DC |
| Average current | < 60mA(@5V) |
| Peak current | 150mA (@5V) |
| Interface level | 3.3 V(Compatible with 5V) |
| Measuring range | refer to Table 2 |
| Output signal |
UART(TTL interface level 3.3V) |
| PWM | |
| DAC(default 0.4-2V) | |
| Preheat time | 3 min |
| Response Time | T90< 120 s |
| Working temperature |
0 ~ 50 ℃ |
| Working humidity | 0~ 90% RH (No condensation) |
| Dimension | 33 mm×20 mm×9 mm (L×W×H) |
| Weight | 5g |
| Lifespan | > 5 years |
