Optic Sensor Amplifier | Precision Digital Display | 10-30V DC NPN/PNP

This fiber optic sensor amplifier lets you control your detection tasks precisely. When you use it with fiber optic cables, it makes a precise optical photoelectric sensor system. The clear digital display shows you the exact light values. This helps you set accurate limits for tricky targets. Features and Benefits - Two digital displays - Shows the real-time light value received and your setpoint for quick checking. - Switchable Light-On/Dark-On settings - You can set the output to turn on when an object is present or absent. - Small DIN rail mount body - It snaps onto a standard DIN rail easily, saving space inside control panels. - Four-wire NPN/PNP output - It works with both sourcing and sinking wiring setups for wide compatibility. Applications - Printing industry for finding registration marks or the edge of a paper roll. - Food processing for checking how full opaque containers are or finding clear packaging. - Custom machinery for sensing small items like threads, wires, or gear teeth. Core Technologies & How They Work The Optic Sensor Amplifier operates on an optical photoelectric switch principle. This means it uses light to detect objects or changes in its environment. The amplifier processes the signal from a connected fiber cable, which transmits light to and from the sensing point. Its digital display provides clear feedback on the detected conditions. The 10-30V DC operating voltage ensures compatibility with common industrial power supplies, while the NPN/PNN output type allows for flexible integration into various control systems. Fiber Bragg Grating (FBG) While the Optic Sensor Amplifier itself does not employ Fiber Bragg Grating, FBG is a common technology in other fiber optic sensors, particularly for temperature sensing. An FBG sensor works by having a periodic change in the refractive index within the core of a fiber cable. When broadband light passes through this grating, a specific wavelength is reflected, while others are transmitted. Changes in temperature or strain alter the grating's period, causing a shift in the reflected wavelength. This shift is then measured to determine the change in temperature or strain. Fluorescence (Phosphor Decay) Fluorescence, specifically phosphor decay, is another method used in some fiber optic temperature sensors. In this technique, a phosphor material is excited by a light source, often transmitted via a fiber cable. The phosphor then emits light (fluoresces) over a period, and the decay time of this fluorescence is temperature-dependent. By measuring how quickly the emitted light fades, the temperature can be accurately determined. This method is particularly useful in environments where electrical sensors are unsuitable due to EMI or hazardous conditions. Distributed Temperature Sensing (DTS) Distributed Temperature Sensing (DTS) systems use a long fiber cable as the sensing element itself, allowing for continuous temperature measurement along its entire length. This differs from point sensors. A DTS system works by sending a laser pulse down the fiber cable. As the light travels, it interacts with the fiber material, causing a small amount of light to scatter back towards the source. Some of this backscattered light, known as Raman scatter, is temperature-sensitive. By analysing the characteristics of the Raman scatter at different points along the fiber, the system can determine the temperature profile. GaAs (Gallium Arsenide) Bandgap Gallium Arsenide (GaAs) bandgap technology is employed in certain types of fiber optic temperature sensors. The electrical resistance of a GaAs crystal changes predictably with temperature. In these sensors, the GaAs crystal is typically located at the end of a fiber cable. Light is transmitted down the fiber, and the change in the crystal's optical properties (due to temperature-induced changes in its bandgap) affects the light that is reflected or transmitted back through the fiber. This optical change is then measured to determine the temperature.