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Overview：
Transformer on-line monitoring and fault diagnosis technology is very important for improving the safety and stability of power system.Among them, on-line monitoring technology based on dissolved gas analysis in oil is the most common and the most important technology in on-line monitoring of transformers. DGA is a powerful diagnostic tool to help you understand the health and condition of power transformers and other oil-filled equipment. 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.DK-200P Portable Dissolved Gas Analyzer using photoacoustic spectroscopy to analyze dissolved gas in oil to monitor the safe operation of oil-filled electrical equipment has the characteristics of accuracy,repeatability,maintenance-free, quick response and high precision.
It has pulsed IR source and 8 distinct spectral bands in the mid-IR region defined by narrow band-pass optical filters.High sensitivity is obtained by utilizing the unique microphone technology from Gasera Ltd., Finland. High selectivity is achieved by choosing up to 8 optical filters with narrow spectral bands for target gases as well as interfering gases. Several spectral regions can be used with each gas for minimal cross-sensitivity. Analysis is based on a modified classical least squares fit of sample response to calibration data.Photoacoustic technology allows high sensitivity from short optical path length which has been further improved with novel model-based non-linear compensation. This provides linear dynamic range of over five orders of magnitude.
Features：
l No consumables
l Built in self-test
l Long calibration period
l Sub-ppm detection limits
l Up to 7gases simultaneously
l Analysis from very low gas volume
l Versatile programming of measurement tasks
l High-resolution graphical display with userfriendly menus
l Built in trend view for monitoring tasks, no external computer required
l Presentation of the measurement results of all gases both numerically and in graphical form
Technical Date：
Measurable gases | ||
Gas |
Limited detection |
Range |
Hydrogen H2 |
5ppm |
5,000ppm |
Methane CH4 |
1ppm |
50,000ppm |
Ethane C2H6 |
1ppm |
50,000ppm |
Ethylene C2H4 |
1ppm |
50,000ppm |
Acetylene C2H2 |
0.5ppm |
50,000ppm |
Carbon Monoxide CO |
5ppm |
50,000ppm |
Carbon Dioxide CO2 |
5ppm |
50,000ppm |
Moisture H2O |
0% |
100% |
Oxytran O2 |
0% |
25% |
Nitrogen N2 |
0% |
80% |
Physical&Mechanical | ||
Ambient operating temperature |
0 - +40°C |
|
Operating sample temperature |
0 - +45°C |
|
Storage temperature |
-20°C - +70°C |
|
Humidity 90% |
(non-condensing @30°C) |
|
Power Supply |
110-240VAC@50-60Hz |
|
Power Consumption |
50W |
|
Weight |
||
Size |
400 x 330 x 220mm |
|
Gas cell volume |
||
Oil volume in extraction unit |
||
Vibration endurance |
IEC 60068-2-6, Test Fc |
|
Drop/Shock |
IEC 60068-2-31 and ISTA 1A |
|
Measurement data | ||
Dynamic range |
500-50,000 |
|
Zero drift |
± detection limit per 1 month |
|
Measurement repeatability |
5% of measured value in reference conditions |
|
Range drift |
5% of measured value per 12 month |
|
Accuracy |
± 5% or ± 2 ppm (whichever is greater) ±1% RH at 0-90% RH for H2O According to the specifications of the Figaro sensor for H2 |
|
User interface |
Built in touch screen, virtual key pad |
|
Communication |
USB，AK |
|
Standards |
Low Voltage Measurement Directive 2006/95/EC and electro magnetic EMC Directive2004/108/EC EN 50270: 2006, EN 61000-3-2: 2006, EN 61000-3-3: 1995 + A1: 2001 + A2: 2005, EN 61010-1: 2001 Safety standards： EN61010-1 (2001), IEC 61010-1 (2001), CAN/CSA-C22.2 No. 61010-1 (2004)and UL 61010-1 (2004 incl. rev. 2005) |
|
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