General requirements of portable transformer oil gas analyser
Technical specifications portable DGA device
Specific data of portable DGA device
Detection range for key gases
Gas Lower Limit (ppm) Upper Limit (ppm)
Hydrogen: 5 5,000
Methane: 1 50,000
Ethane: 1 50,000
Ethylene: 1 50,000
Acetylene: 1 50,000
Carbon monoxide: 5 50,000
Carbon dioxide: 5 50,000

Moisture measurement Lower Limit Uppper Limit
Moisture: 0% 100%

Physical & Mechanical
Ambient operating temperature: +5 ~ +50°C
Operating sample temperature: 0 ~ +45°C
Storage temperature: -30 ~ +80°C
Humidity: 90% (non-condensing @ 30%)
Vibration endurance: IEC 60068-2-6, Test Fc
Drop/Shock: IEC 60068-2-31 and ISTA 1A
Mains input frequency range: 47 - 63Hz
Mains input voltage range: Universal 90 - 250VAC
Weight: <15kg
Gas cell volume: <10ml
Oil volume in extraction unit: <=50ml

Measurement parameters
Dynamic range: 500 - 50,000
Zero: +/- 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 +/-2ppm (whichever is greater); +/-1% RH at 0 - 90% RH for H2O according to the specifications of the Figaro sensor for H2

Data Analysis and Interface
Screen: Built in touch screen, virtual key pad
Communication: USB 2.0
Built in Linux Processor: Storage for thousands of results
Processor details: CPU: Intel(R) Atom Z510 1.1 GHz
System memory: DDR2-533 1GB
SSD (data storage)
CompactFlash
Type-II 16GB
Standards: IEEE, CIGRE, Duval, Doble DG-AI

Standards
EN 61326-1:2006 Radiated emissions (Class A)
EN 61326-1:2006 Conducted emissions (Class A)
EN 61000-3-2:2000 Steady state & fluctuating harmonics
IEC 61000-3-3:2001 Flicker testing
IEC 61000-4-2:2001 Electrostatic discharge immunity testing
IEC 61000-4-3:2001 Radiated immunity
IEC 61000-4-4:2001 Electrical fast transient/burst immunity testing
IEC 61000-4-5:2001 Surge immunity
IEC 61000-4-6:2001 Conducted RF immunity
IEC 61000-4-8:2001 Magnetic field immunity
IEC 61000-4-11:2001 Voltage dips and interrupts
Additional: EN 61010-1:2001; IEC 61010-1; UL 61010-1; CAN/CSA-C22.2 No.61010-1; EN 50270:2006

Manufacturers authorisation: YES

Tool kit with flanges, adaptors, spare filters: YES