Technical indicators
Product model: MP503
Product type: planar semiconductor gas sensor
Standard package: metal package
Detection gas: alcohol, smoke, isobutane, formaldehyde
Detection concentration: 1~1000ppm (alcohol)
Standard circuit
Loop voltage condition: ≤ 24V DC
Heating voltage: 5.0V ± 0.1V AC or DC
Load resistance: adjustable
Characteristics of gas sensor under standard test conditions
Heating resistance: 95Ω ± 10Ω (room temperature)
Heating power consumption: ≤ 300mW
Resistance of sensitive body: 1K Ω~30K Ω (in 50ppm alcohol)
Sensitivity: Rs (in air)/Rs (in 50ppm alcohol) ≥ 5
Standard test conditions
Temperature and humidity: 20℃± 2℃; 65%±5%RH
Standard test circuit Vc: 5.0V ± 0.1V; VH:5.0V±0.1V
Warm-up time: not less than 48 hours
Service conditions:
Manual welding is the most ideal welding method for sensors, and the recommended welding conditions are as follows:
Flux: rosin flux with the least chlorine
Thermostatic soldering iron
Temperature: 250℃
Time: no more than 3 seconds
The following conditions shall be met when wave soldering is used:
Flux: rosin flux with the least chlorine
Speed: (1-2) m/min
Preheating temperature: (100 ± 20) ℃
Welding temperature: (250 ± 10) ℃
Pass the wave soldering machine once