10 PCS MC21B Catalytic Flammable Gas Sensor
The MPn-5 semiconductor propane sensor adopts a multi-layer thick-film manufacturing process. A heating electrode, measuring electrode and metal oxide semiconductor gas-sensitive layer are integrated on an Al2O3 ceramic substrate and encapsulated in a metal housing. When propane is present in the ambient air, the conductivity of the sensing material changes with gas concentration. This conductivity change can be converted into an electrical output signal through a simple measurement circuit. MPn-5 provides high sensitivity to C3H8, excellent stability and enhanced resistance to common interfering gases. The sensor has achieved UL 2075 certification and is designed for a service life of up to 10 years, supporting OEM manufacturers developing residential, commercial and industrial combustible gas detection products. Application Propane gas leak alarms Liquefied gas leak monitoring devices Combustible gas detectors Residential gas leak detectors Commercial gas leak detectors Factory gas leak detection systems Home fire and safety detection systems Commercial fire and safety detection systems Gas leak alarms OEM propane detectors OEM combustible gas detection products Features UL 2075 certified Up to 10-year service life High sensitivity to C3H8 Excellent anti-interference ability Excellent long-term stability Enhanced resistance to common household interferents Reduced cross-sensitivity to alcohol Designed to reduce interference from cooking vapors Designed to reduce interference caused by humidity changes Multi-layer thick-film manufacturing process Metal oxide semiconductor sensing technology Compact metal-cap package Suitable for OEM gas detector integration In-house control of core materials and manufacturing processes Stable product quality Stable supply and lead-time support Specifications Model MPn-5 Sensor Type Flat Surfaced Standard Encapsulation Metal Cap Target Gas Liquefied Gas / C3H8 Detection Range 0～5250ppm Loop Voltage (Vc) ≤24V DC Heater Voltage (VH) 5V±0.1V AC or DC Load Resistance (RL) Adjustable Heater Consumption (PH) 305±25mW Heater Current (IH) 61±5mA Sensitive Resistance (RS) 1kΩ～20kΩ (in 2000ppm C3H8) Sensitivity (S) Rs(in air) / Rs(in 2000ppm C3H8) ≥8 Concentration Slope (α) ≤0.6 (R2000ppm / R500ppm C3H8) Standard Test Temperature / Humidity 20℃±2℃; 55%±5%RH Standard Test Circuit Vc: 5V±0.1V; VH: 5V±0.1V Preheat Time Not less than 48 hours O2 Content 21% (not less than 18%) Lifespan 10 Years Certification UL 2075 * The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.