Health & Safety

ISO 45001


ISO 14001

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MTE HYDROCAL 1009 Online Individual Dissolved Gas Analysis – 8 Gases & Moisture

The HYDROCAL 1009 is a permanently installed multi-gas-in-oil analysis system with transformer monitoring functions. It individually measures, Moisture in Oil (H2O) and the key gases Hydrogen (H2), Carbon Monoxide (CO), Carbon Dioxide (CO2), Methane (CH4), Acetylene (C2H2), Ethylene (C2H4), Ethane (C2H6) and Oxygen (O2dissolved in transformer oil.



MTE HYDROCAL 1009 Online Individual Dissolved Gas Analysis – 8 Gases & Moisture


As Hydrogen (H2) is involved in nearly every fault of the insulation system of power transformers and Carbon Monoxide (CO) is a sign of an involvement of the cellulosic / paper insulation the presence and increase of Acetylene (C2H2) and Ethylene (C2H4) further classifies the nature of a fault as overheating, partial discharge or high energy arcing. Oxygen (O2) can be a sign of excessive ageing or leakages within the sealing of hermetic transformers. The device can serve as a compact transformer monitoring system by the integration / connection of other sensors present on a transformer via its optional analogue inputs:

  • 4 Analogue inputs 0/4 … 20mADC
  • 6 Analogue inputs 0/4 … 20mAAC +20% or 0 … 80 VAC +20%

HYDROCAL Comparison

HYDROCAL 1011 genX animated
1001+ 1003 1005 1008 1009 1011
Hydrogen (H2)
Moisture in Oil (H2O)
Carbon Monoxide (CO)
Carbon Dioxide (CO2)
Methane (CH4)
Acetylene (C2H2)
Ethylene (C2H4)
Ethane (C2H6)
Oxygen (O2)
Nitrogen (N2)
Propane (C3H8)


For more information please refer to the HYDROCAL 1009 data sheet. If you have any further questions or would like a quotation please contact our sales team.

Additional information

Operation temperature (ambient)

-55°C … +55°C

Oil temperature (inside Transformer)

-20°C … +90°C

Storage temperature (ambient)

20°C … +65°C

Oil pressure

0 – 800 kpa (negative pressure allowed)

Connection to valve

G 1½" DIN ISO 228-1 or 1½” NPT ANSI B 1.20.1

Safety - Insulation protection

IEC 61009-1:2002 CE certified

Safety - Degree of protection

IP-55 CE certified

Product Enquiry

Please contact our sales for the product information. E-mail : [email protected]