Hot-wire type gas sensor
Domestic, Industrial spot natural gases,LPG
COAL GAS, etc combustible gas detection
stable function

Hot-wire type gas sensor

MR511 type gas sensor through gas absorbtion on the metal oxide semiconductor
generates hot conduction and electronics conduction change principal, the white coil
resistor change when detecting gas concentration. MR511 consists detecting element
and compensation element, both elements are placed in a wheatstone bridge circuit,
when the combustible gas appears, the detecting element resistor reduces, bridge circuit
voltage output changes, the voltage will increase according to the gas concentration
increase, the compensation element refers to temperature compensation effection.

Features
High sensitivity, large output
Fast primary stability time, quick response
Remarkable reproducibility and reliability.
Goode selectivity, avoid smoke ethanol disturb
Low consumption, miniature design
Applications
Domestic, Industrial spot natural gases, LPG.
COAL GAS, alkyl etc combustible gas
concentration detection.
Combustible gas leak alarm
Combustible gas detection

Specifications
Name Technical parameter
Working voltage 3.0±0.1 V
Working current 100±10 mA
0.3%Methane >60 mV
0.2%Butane >60 mV
sensitivity
0.1%Hydrogen >40 mV
Response Time (90%) Less than 15sec
Resume time (90%) Less than 30sec
Working environment -20-+60°C Less than 95%RH
Size Φ12mmX10mm