Photoacoustic spectrum oil gas analysis sensor DKG-M series
Overview
Transformer on-line monitoring and fault diagnosis technology is very important for improving the safety and stability of power system. The on-line monitoring technology based on dissolved gas analysis in oil is one of the most popular and important on-line monitoring technologies for transformers. Analyzing the composition and content of dissolved gas in oil is one of the most effective measures to monitor the safe operation of oil-filled electrical equipment. Using photoacoustic spectroscopy to analyze dissolved gas in oil to monitor the safe operation of oil-filled electrical equipment has the characteristics of maintenance-free, high real-time and high precision.
Technology
Dkg-M series oil gas analyzer, can achieve multi-component oil gas analysis, Photoacoustic spectroscopy technology can realize high sensitivity measurement of short optical path. Based on patented ultra-high sensitivity optical microphone technology with an enhancThe ultra-high sensitivity can be achieved by 7 kinds of optical narrowband filters. The extremely narrow optical filter can remove the interference of background gased cantilever beam. It can achieve wide range up to 5 levels of linear dynamic range ratio. 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 7 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
The hydrogen sensor has a life span of more than four years
Specification
Span
Gas | Lower Limit /ppm | Upper Limit /ppm |
H2 | 5 | 5,000 |
CH4 | 1 | 50,000 |
C2H6 | 1 | 50,000 |
C2H4 | 1 | 50,000 |
C2H2 | 1 | 50,000 |
CO | 5 | 50,000 |
CO2 | 5 | 50,000 |
Water measuring/Humidity | 0% | 100% |
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 |
Size | 15.2 cm W x 10.5 cm H x 34.9 cm D |
Chamber volume | < 30ml |
Dynamic range | 500-50,000 |
Zero drift | ± Limited Detection/ 1 month |
repeatability | 5% of measurement value( under reference condition) |
Range drift | 5% of measurement value/ 12 months |
Precision | +/- 5% or +/- 2 ppm( take the maximum) +/-1% RH（H2O RH 0-90%） |
Communication interface | USB (open communication protocol) |
Based on infrared photoacoustic spectroscopy technology, DKG-ONE Photoacoustic Gas Analyzer combines the unique light source and detector which is a patented enhanced cantilever beam optical microphone with ultra-high sensitivity. It can be widely applied
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