Hydrogen pressure sensor online purchase

Product description

There are many kinds of optical hydrogen pressure sensors, among which optical fiber hydrogen pressure sensor is the most common. Fiber optic hydrogen pressure sensor can be divided into microlens type, interference type, disappearing field type, fiber Bragg grating type and other types, but its basic principle is to combine the fiber with hydrogen sensitive material, hydrogen sensitive material and hydrogen contact interaction, cause the change of the physical properties of the fiber, and then change the optical characteristics of the transmitted light in the fiber. Finally, the hydrogen concentration is determined by detecting the change of the characteristic physical quantity of the output light. The most commonly used pressure hydrogen sensor in fiber optic hydrogen sensor is palladium membrane. Different types of sensors take advantage of different physical quantities. An interferometric fiber optic hydrogen sensor, for example, uses the principle that a palladium film expands in volume after interacting with hydrogen to stretch the fiber, increase the optical path, and then change the phase. The fiber Bragg grating hydrogen sensor also uses the principle of volume expansion after the interaction between palladium film and hydrogen, but it determines the hydrogen concentration by measuring the change of the grating distance. The microlens fiber optic hydrogen sensor utilizes the principle that the reflectance and refractive index of palladium change after hydrogen is adsorbed by palladium hydride. Specializing in the manufacture of intake manifold absolute pressure transmitter, hydrogen energy pressure sensor, engineering hydraulic sensor, injection molding machine special pressure transmitter.