Hot-wire type alcohol gas sensor
Portable alcohol detector and automotive ignition control system for
domestic, industrial

Hot-wire type alcohol gas sensor with large signal output

MR513 type gas sensor detect the gas concentration through resistance
variation of platinum loop, which is based on the principle of the gas
absorbed on the surface of metal oxide semiconductor lead to the heat
exchange and electricity exchange variation. It consists of detecting
element and compensating element, which are the two legs of electric
bridge. When exposing to the combustible gas, the resistance of
detecting element reduces and the voltage variation of bridge output
increase in direct proportion according to gas concentration. The
compensating element performs for the reference and temperature compensation functions.

Features

*High sensitivity, large signal output
*Short duration of initial stabilization, fast response.
*Good reproducibility and reliability
*Low consumption, miniature design

 Application
Portable alcohol detector and automotive ignition control system for
domestic, industrial spot.

 Technical specification

 Model MR513
Type Hot-wire gas sensor
Standard encapsulation Plastic encapsulation
Working voltage(V) 2.5±0.1
Working current(mA) ≤100
Sensitivity(mV) ≥60 (ethanol 100ppm)
Linearity(%) 0~5
Response time (90%) ≤20
Resume time (90%) ≤40
Using environment -20-+50°C under 95%RH
Storage environment -20—+70°C under 70%RH
Dimension(mm) Φ12mm×10mm