ShenzhenYijiajie Electronic Co., Ltd.
The company advocates the corporate culture of "integrity and dedication, pragmatic innovation, unity and cooperation, diligence and progress", pays attention to standardized management, advocates
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Product Description:
MH-440D Electrochemical Infrared Methane Sensor Is Used For HVAC Refrigeration And Indoor Air Quality Monitoring
Features:
MH-440D infrared sensor is a general-purpose intelligent infrared gas sensor (hereinafter referred to as the sensor), using non-dispersive infrared (NDIR) principle to detect hydrocarbon combustible gases in the air, with good selectivity, no oxygen dependence, stable performance, long life; Built-in temperature compensation. The sensor is a compact high performance sensor which combines the mature infrared absorption gas detection technology with micro machining and excellent circuit design. Easy to use, can be directly used to replace catalytic combustion elements, widely used in the presence of flammable, explosive gases in various occasions.
Product model MH-440D
Detection gas methane
Operating voltage 3.6 ~ 5.0V DC(need to be powered by safety grid)
Average current < 85 mA
Interface level 3.0V
Measurement range 0 ~ 10%Vol (see Table 2)
Output signal UART
0.4 to 2.0V
Preheating time: 3 min
Response time T90 < 30 s
Operating temperature -20 ~ 60 ℃
Working humidity 0 ~ 95%RH (non-condensing)
Dimensions Φ20*22.4mm
Weight 35g
Life span > 5 years
Protection class IP54
Intrinsic safety parameters Ui=7.5VDC, Ii=265mA,
Pi=0.5W, Ci= 10μF, Li=0Mh
Specifications:
| Operating temperature | -20℃ ~ 60℃ |
| Preheating time | 3 min |
| Response time | < 30 s |
| Working humidity | 0 ~ 95%RH (non-condensing) |
