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  • Photoacoustic Gas Analyzer
  • Dissolved O2, O3, H2 analyzer
  • Oil & Gas Pipeline Health
  • Sonic densitometer
  • Dissolved carbon dioxide analy
  • Other instrumentation

    • Photoacoustic spectrum SF6 resolvent sensor DKG-SD

    Photoacoustic spectrum SF6 resolvent sensor DKG-SD

    Overview 

    SF6 electrical combination electrical equipment (GIS) was once considered to be high insulation performance and maintenance-free products. However, there are still some insulation faults in the process of operation. In the case of partial discharge such as corona, spark and arc. SF6 gas in electrical equipment will react with water, oxygen and solid insulation media, and generate various types of decomposition products. And there was a correlation between the decomposition products and partial discharge types. So it is possible to diagnose equipment defect or fault based on gas component analysis.

     

    Technology 

    DKG-SD series photoacoustic spectrum SF6 resolvent multi-gas analysis sensor. Photoacoustic spectroscopy technology can realize high sensitivity measurement of short optical path. Based on patented ultra-high sensitivity optical microphone technology with an enhanced cantilever beam. It can achieve wide range up to 5 levels of linear dynamic range ratio.  The ultra-high sensitivity can be achieved by 9 kinds of optical narrowband filters. The extremely narrow optical filter can remove the interference of background gased. Multiple spectral regions can facilitate minimum cross sensitivity. Based on infrared photoacoustic spectroscopy, the multi-gas analyzer has a pulse infrared light source and forms 9 spectral bands in the middle infrared region through narrow band optical filter for gas analysis.

    Features 

    Non-consumable, maintenance-free, non-chemical, non-chromatographic

    Measuring chamber with constant temperature and pressure , single point calibration, wide dynamic range

    Configurable response time From seconds to minutes

    Multi - gas synchronous measurement, high cost performance

     光聲光譜SF6分解物傳感器.png

    Specification 

    Range

    Gas

    Lower limit/ppm

    Upper limit/ppm

    SO2

    0.1

    10,000

    CO2

    1

    50,000

    CF4

    0.1

    10,000

    CS2

    0.1

    10,000

    CO

    0.5

    10,000

    H2S

    5

    500,000

    HF

    0.1

    10,000

    SO2F2

    0.1

    10,000

    H2O

    0%

    100%

     

    Annotation: configurable range

     

    Physical and mechanical  

    Operation Temp.

    +5 - +50°C

    Sample Temp.

    0 - +45°C

    Storage Temp.

    -30°C - +80°C

    Humidity

    90%（no condensation @30°C）

    Vibration tolerance

    IEC 60068-2-6，Fc test

    Drop/impact

    IEC 60068-2-31 and ISTA 1A

    Power supply

     90-250VAC ，47-63Hz

    Weight

    < 5kg

    Dimension

    15.2 cm W x 10.5 cm H x 34.9 cm D

    Chamber volume

    < 30ml

    Zero drift

    ± Limited Detection/ 1 month

    repeatability

    2% of measurement value( under reference condition)

    Range drift

    5% of measurement value/ 12 months

    Precision

    +/- 5% or +/- 2 ppm( take the maximum)

    Communication interface

    USB (open communication protocol)




    Consulting phone 010-8243-3533
    Duke. All rights reserved Beijing tech technology Co. Ltd. 京ICP備14007870號-1
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