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LY-NDUV Non-Dispersive Ultraviolet NO₂ Gas Measurement Optical Module

Module Introduction

The module is specially developed for NDUV NO₂ gas analysis. Small size, high measurement accuracy, easy to integrate into the NO₂ gas analyzer, it is especially suitable for vehicle exhaust detection and ship exhaust detection.

Principle

The module adopts the principle of non-dispersive Ultraviolet absorption and consists of a Narrow band UV LED, a gas chamber, a detector and a signal control and processing circuit. It analyzes the gas concentration by detecting the light intensity before and after gas absorption and thus calculating the absorbance.

The module adopts a new type of multi-reflection Ultraviolet gas chamber designed by Laoying, It has the advantages of customized optical path and stable optical path, achieving both high stability and low detection limit. The module has a smaller size and is convenient to be integrated into various gas analyzers.

Features

UV-LED light source, low power consumption, Long service life, no need to preheat
Low detection limit, high accuracy
Small in size and light in weight
The mechanical structure and specifications according to customer application requirements.
Built in reference channel, high measurement accuracy
Prevent water vapor interference
thermostat control is adopted to ensure stability

Applications

Ambient air analysis
Analysis of exhaust gas from stationary sources
Analysis of emission from mobile pollution Sources
Industrial gas analysis

Technical Indicators

Technical Indicators	Specifications
Measured gas	NO₂
Measuring range	0～1000×10^-6
Indication error	≤±25×10^-6 or ±4%
Resolution	0.1×10^-6
Repeatability	≤±20×10^-6 or ±3%
Response time	T90 < 4.5 s@1.5L/min
Operating temperature	(0～40)℃
Relative humidity	≤95%RH
Calibration	Zero calibration and span calibration
Communication interface	RS232/RS485
Output signal	Concentration/Original AD value
Power supply	DC 12V/24V
Power	≤ 25 W (upon power-on); ≤ 5 W (when working stably)
Dimensions	150mm×70mm×50mm
Weight	<0.35Kg

Explanation

The above parameters are totally up to the requirements of the relevant national standards. If product upgrades, or image does not match with real machine, please refer to the real machine.