Concentration Variation Detection of Hydrogen Peroxide Using an IR Sensor

Hydrogen peroxide is a monopropellant which is called as a green fuel. It is used in micro propulsion devices for controlling and maneuvering of nano satellites. The concentration of hydrogen peroxide decides the thrust produced in such mini/micro thrusters where the thrust is of the order of few newtons. This paper focuses on the detection of concentration of hydrogen peroxide based on the change in the optical property, the refractive index. An experiment has been done for three different concentrations of hydrogen peroxide. Distilled water was taken as a base reference for the plot. The test liquid was made to flow through a glass tube, and the refractive index was measured using an IR transceiver setup. The values obtained using NI-cDAQ for various concentrations are compared. These concentration variations detected by the sensor is accurate and precise. The sensor will be cost effective when compared to the ones available commercially.