The operation of biomass treatment devices such as gasifiers is based on the
control of key parameters that play an important role in product formation.
These include: temperature, excess oxygen, relative humidity and biomass
composition. This work focuses on excess oxygen and temperature. Unfortunately, flue gas oxygen analyzers are expensive and not accessible to small
industries. However, the equivalence ratio is linked to excess oxygen and has
the advantage of not depending on biomass composition. This study therefore focuses on the design and development of a device for controlling this
equivalence ratio by measuring oxygen concentration using a self-propelled
Lambda probe, and a system for monitoring this equivalence ratio using an
Arduino Uno 3 microcontroller. The temperature is recorded with an accuracy of ±1.5˚C. For a heating time of 10 minutes, the response time to temperature change is around 3 seconds, which is sufficient for the device to
function properly. This simple device is an efficient and cost-effective means
of checking the equivalence ratio

Equivalence Ratio, Biomass, Gasification, Lambda Sensor, Microcontroller