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OIL ANALYSIS

Mobil GC 2

Portable gas chromatograph for precise on-site analysis of dissolved gases – to ASTM D3612 and IEC 60567.

Ageing processes such as oxidation or thermal breakdown steadily degrade the chemical and dielectric properties of the insulating oil. With the Mobil GC 2 you can react to faults early and reduce unplanned maintenance.

ASTM D3612IEC 60567Vacuum extraction
Mobil GC 2mobile
11 gases
+ total gas content
40 h
internal gas supply
19 kg
rugged Pelicase
0.1 ppm
resolution
Explainer film

Mobil GC 2 explained in one minute

Explained in one minute: the Mobil GC 2 from Energy Support is a portable gas chromatograph in a rugged case. It measures up to 11 dissolved gases and the total gas content on site – with vacuum extraction, expert system and an internal gas supply for up to 40 hours.

Read the video transcript
Mobil GC 2 – explainer: portable gas-in-oil analysis at the transformer

When a transformer reports a problem, every hour counts. That's why the lab now comes straight to the transformer. The Mobil GC 2: the portable gas chromatograph in a rugged case – for on-site service or the laboratory. Simply place the syringe with the oil sample on the port and start the measurement. Vacuum extraction releases the gases from the oil and transfers them automatically into the gas chromatograph. It measures up to eleven gases plus the total gas content – with a resolution of 0.1 ppm. The expert system evaluates the result directly – using Duval, Rogers, IEC or your own method. The internal gas supply with argon and hydrogen lasts for up to 40 hours of continuous operation – wherever you are. Compliant with ASTM and IEC. Mobil GC 2. The gas lab in a case – from Energy Support.

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Features

All benefits at a glance

Portable & flexible

Gas-in-oil analysis for condition assessment of insulating oils – on site at the transformer or in the lab.

Fully automatic

Fully automatic measurement with vacuum extraction – guided step by step via the display.

Standard-compliant

Testing of dissolved gases to ASTM D3612 and IEC 60567 – reliable and comparable.

High sensitivity

High sensitivity when analysing 11 gases – including direct analysis of the Buchholz gases.

40 h continuous operation

Internal gas supply for up to 40 hours of continuous operation – independent of the location.

One calibration

Calibration with a single calibration gas – suitable for all new and aged insulating oils.

Process

How the measurement works

In just a few steps from the sample port to a standard-compliant result – the display guides you through the entire process.

01

Take a sample

Extract the oil sample without contamination – e.g. with the OSM2 Pro.

02

Fit the syringe

Place the syringe on the port of the Mobil GC 2 and start the measurement.

03

Degas automatically

After degassing, the gas sample is transferred automatically into the GC.

04

Get the result

Measurement result incl. total gas content – insight into the gas saturation.

Expert System software

The Mobil GC 2 comes with the Expert System software. Apply various diagnostic methods or design your own method with individual gas concentrations as the basis for condition assessment.

RogersIECDuvalCustom method

Detection limits

Accuracy · ppm
H₂
1 ppm
CO
0,2 ppm
CO₂
0,2 ppm
CH₄
0,1 ppm
C₂H₂
0,1 ppm
C₂H₄
0,1 ppm
C₂H₆
0,1 ppm
C₃H₆
0,5 ppm
C₃H₈
0,5 ppm
O₂
30 ppm
N₂
30 ppm
Σ
Total gas

The more gases detected, the more information about the condition of the insulating oil – the Mobil GC 2 analyses the total gas content and 11 fault gases.

Technical details

Measurement technique
Gas-in-oil analysis with vacuum extraction and GC
Measuring range
Gas in oil – 0.1 – 100,000 ppm
Resolution
0.1 ppm
Calibration
Traceable calibration gas for all new and aged insulating oils
Sampling
Glass syringe 10 ml, gas-tight
Power supply
100 – 240 VAC, 50/60 Hz
Operating temperature
0 – 50 °C · 5 – 95 % rel. humidity, non-condensing
Dimensions
480 × 500 × 310 mm
Weight
19 kg
Housing
Pelicase
Internal gas supply
Argon and hydrogen, both 99.999 % purity

Scope of delivery

  • Expert System software
  • Degassing flange
  • Calibration object
  • Glass syringes
  • Filling system for internal gas supply
  • Calibration gas for approx. 250 calibrations
Full datasheet (PDF)

Interested in the Mobil GC 2?

Download the datasheet or talk to us about using it on your transformer.