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DOAS long optical path automatic atmospheric monitoring system

Atmospheric differential absorption automatic monitoring system adopts the international leading long optical path technology to carry out on-line continuous automatic monitoring of urban air quality.

Key words: waste gas

Product Description

DOAS long optical path automatic atmospheric monitoring system

Product introduction

Atmospheric differential absorption automatic monitoring system adopts the international leading long optical path technology to carry out on-line continuous automatic monitoring of urban air quality.
Parameters that can be detected:
NO, NO2, NOX, SO2, O3, etc.

 

Principle

Based on the "fingerprint" characteristic absorption of trace gas components to light radiation (UV/visible), the qualitative and quantitative measurement can be achieved, and a variety of gas components can be measured simultaneously.

 

Purpose

Urban air quality monitoring, real-time pollution source emission monitoring, atmospheric background monitoring, real-time air quality monitoring over road traffic, residential area air quality monitoring, airport air quality monitoring.

 

 

Characteristic

● High measurement accuracy, low detection limit.
● Non-contact measurement, does not change the nature and concentration of the measured gas
● Can be real-time, continuous, long-term operation. The operation is simple, the maintenance is convenient, the operation cost is low.
● Can simultaneously monitor a variety of pollution gas.
● Long distance telemetry, monitoring range is wide, the data is representative.

 

Main technical parameters

Measuring the optical path

200 ~ 800 meters

The total power

Less than 0.5 KVA

The light source

Continuous xenon lamp

Bus interface

RS232/485 bus

Serial port communication rate

2400bps

Industrial PC

Master frequency higher than 1GHz, Windows xp sp2 Professional or server2003 system

Measuring principle

Differential Optical absorption Spectrometry (DOAS)

Measuring ingredients

NO, SO 2, NO 2, O 3, etc

range

1 (ppb) ~ 500 (ppb)

Minimum detection limit

1 ppb

Zero drift

Plus or minus 1 PPB / 24 h

20% full scale drift

Plus or minus 1 PPB / 24 h

80% full scale drift

+ / - 2.5 PPB / 24 h

noise

1 ppb

Error value

1%F.S

The output signal

Analog signal or digital signal

 

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Contact Information

  zhgrhl@126.com

  0756-6332383

  http://zhgrhl.com/

  3016, No. 33, Jinmeng Lane, Xiangzhou District, Zhuhai


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