Portable SF6 Gas Analyzer Transdox 6100 SF6

This product is Discontinued

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Portable SF6 Gas Analyzer Transdox 6100 SF6

The Transdox 6100 is the latest portable gas analyzer designed for monitoring the quality of SF6 in gas insulated sub-stations and circuit breakers. The analyzer is housed in a rugged IP66 Peli-case with eight-hour lithium battery & weighing 8.5kg, making this a truly portable field instrument.

The analyzer simultaneously measures SF6, SO2 and H2O. Using an infra-red SF6 detector, the analyzer offers exceptional accuracy and stability when measuring the purity of SF6. The decomposition products of SF6 can be identified by analyzing the ppm SO2 content of the gas; this forms from the breakdown of SOF2 and SOF4 after an electrical discharge. The dew-point of the gas (in ppmV or °C) is an important parameter to measure as this has an effect on the dielectric properties of SF6. The Transdox is fitted with a special high-speed dew-point sensor fitted with a system allowing stable measurements in less than three minutes.

The GIS compartment gas pressure is also recorded and logged by the analyzer. Maximum input pressure is 10 bar. All three gases are analyzed and data-logged simultaneously and just a few minutes are required to get a stable analysis.

Incorporating a 7” full colour touch screen interface with soft menu keys and a thermal printer for permanent record keeping the Transdox is easy to operate both in permanent or sampling modes. ISO and CIGRE test configurations are pre-programmed for fast operation and all data is permanently logged for review at a later date. The user can also program custom test configurations. The test location / user name can be entered and displayed using an alphanumeric key-pad. Data can be downloaded via a USB memory stick and is MS Excel formatted.

The analyzer has a gas output nozzle allowing all sampled gas to be recovered and recycled, ensuring that no SF6 gas is released into the atmosphere (in accordance with the Kyoto agreement). A Low-cost SF6 gas recovery bags are available to ensure no gas escapes into the atmosphere when using the Transdox. A 2m armored sampling hose with sealed fittings is supplied and is fully compatible with DILO couplings.

  • 4 available configurations:
    • Transdox 6100 A: SF6 - SO2 - H2O
    • Transdox 6100 B: SF6
    • Transdox 6100 C: H2O
    • Transdox 6100 D: SO2
  • 7” Full color touch screen interface
  • USB port
  • Eight-hour lithium battery
  • SF6 gas recovery bag available


  • Portable battery powered SF6 - SO2 - H2O gas analyzer with 8-hour operation
  • High precision infra-red gas detector for SF6 purity over the range 0-100%
  • Electrochemical SO2 sensor for trace analysis of contamination gas 0-100ppm or 0-500ppm
  • High speed dew-point sensor for moisture analysis -65°C to + 20°Cdp (or ppmv)
  • Gas compartment pressure recorded
  • Permanent or Sampling modes available
  • Housed in a rugged IP66 Peli-case total weight 8.5kg
  • Thermal printer fitted as standard
  • 7” full colour LCD display with touch screen operation
  • Pre-loaded standard ISO and CIGRE tests for fast operation
  • Full data-logging and Excel compatible data download onto memory stick
  • Multi-Language (English, French, German, Spanish, Portuguese, Mandarin)
  • Password protection feature
  • Supplied with a 2m armored sampling hose with DILO compatible fittings


  • Controlling SF6 quality in switches, bus bars and circuit breakers in Gas Insulated Substations (GIS)
  • SF6 insulated devices in power stations
  • Checking for the buildup of corrosive decomposition products such as HF and SO2 present in the SF6
  • Measuring the moisture content of SF6 gas by using a dew-point analyzer
  • Applying a condition based maintenance program (CBM) to extend the life cycle of the SF6
  • Detecting the presence of leaks and SF6 discharge
  • Indication of arcing and breakdown through the buildup of corrosive by-products

Specifications Transdox 6100 SF6

Technical Data: Analyzer


90-260Vac, 50/60Hz

Analyzer dimensions

480mm x 360mm x 180mm


8.5 kg


7” full colour LCD display with touch screen operation

Warm up time

3-4 minutes at 20°C

Operating temperature

-10°C to 40°C

Gas Flow

100 to 1000 ml.min-1

Max inlet pressure

0.5-10 bar (protected) Displayed on-screen

Battery Life

In excess of 8 hours with 4-6 hour charge time

Data Output

Excel compatible data via USB memory stick


Thermal printer output of results

Sample connections

6mm OD / 4mm ID Rectus / DILO style closed coupled fittings

Technical Data: Sensor

SF6 Sensor

Infra-Red 0-100%; ± 0.5% FS accuracy; Resolution 0.1%

H2O Sensor

-65°C to +20°Cdp; ± 2°Cdp accuracy of reading*; Resolution 0.1°Cdp

SO2 Sensor

Electrochemical Cell 0-100ppm or 0-500ppm; ± 2% FS accuracy; Resolution 0.1ppm

Life expectancy

2-3 years: SO2; >5 years: SF6 & H2O

Measurement time

3-5 minutes


SF6 and SO2 user selectable cal gas values. H2O sensor factory fixed

* Minimum accurate reading possible with this sensor is -60°Cdp. Sensor will respond from wet to dry in approximately three minutes.

  • Optional Transdox Gas Recovery Bag
  • Optional Transdox Sampling Kit:
    • Transdox 6100 analyzer (A, B, C or D)
    • Set of DN8 and DN20 DILO fittings with 2m hose
Optional Transdox Gas Recovery Bag - Gas Analyzer Transdox 6100 SF6Optional Transdox Sampling Kit - Gas Analyzer Transdox 6100 SF6Optional Transdox Sampling Kit - Set of DN8 and DN20 DILOOptional Transdox 6100 SF6 Sampling Kit

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