Laoyinghaina LY-NDVIS smoke meter module

Principles and characteristics

The module works based on the physical principle of light attenuation. A beam of light is obscured by particles in the exhaust gas. The intensity of the beam is related to the concentration of particulate matter. The relationship can be expressed by the Beer-Lambert law. Opacity N is also called the absorption ratio,which represents the ratio of the absorbed light flux to the incident light flux when the light emitted from the light source passes through a dark channel filled with smoke.

Introduction

The core members of the optical gas analysis module R&D team of the Spectrum Technology Center of Group have many years of experience in the research and development of aerospace spectroscopic instruments in the Academy of Sciences system,and have professional knowledge in related optics,spectroscopy,precision machinery,electronic circuits,signal processing,algorithm design,and software design.,focusing on transforming aerospace spectroscopy technology into the civilian field and developing core technologies and products for optical gas analysis.

The team independently develops core components for optical gas analysis such as ultraviolet enhanced micro-spectrometers,multiple reflection long optical path gas chambers,total reflection telescopes,spectral signal processing circuits and algorithms,light sources and detector drive circuits,and develops a variety of technical indicators based on application needs. The differential absorption spectroscopy (DOAS) gas analysis module,non-dispersive infrared (NDIR) gas analysis module and non-dispersive ultraviolet (NDUV) gas analysis module can be widely used in the environment,industry,medical,energy and other industries to achieve import substitution.

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LY-NDVIS transmission smoke meter module is a split-flow high-performance smoke meter module independently developed by It can meet the technical requirements of JJF 1482-2014,JJG976-2010 and other standards,and has opacity N,absorption coefficient K and There are three readings of the standard optical channel effective length absorption ratio Ns,and it supports N value calibration,smoke temperature calibration and other functions.

characteristic

The opacity parameters are accurately measured,the performance is reliable and stable,and it meets the national standard requirements. It has a built-in accurate and reliable temperature control system that can work under different environmental conditions. It has low maximum power and average power,small size,light weight,simple interface,and high integration. sexual characteristics.

application

The transmission smoke meter developed by integrating this module can be used to measure visible pollutants emitted by compression ignition engines or cars equipped with compression ignition engines; it is widely used in motor vehicle testing stations,automobile manufacturers,and automobile repair shops.,environmental protection agencies and other places.