Health & Safety

ISO 45001


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MTE HYDROCAL 1005-3/-2/-1 Online Individual Dissolved Gas Analysis – 4 Gases & Moisture

The HYDROCAL 1005-3/-2/-1 is designed for multi-gas-in-oil analysis on a bank of three adjacent single phase transformers. This wall-mounted system allows for the individual measurement of Moisture (H2O) and the key gases Hydrogen (H2), Carbon Monoxide (CO), Acetylene (C2H2) and Ethylene (C2H4) dissolved in transformer oil utilising a sampling system that samples oil from each tank via three separate oil channels.


MTE HYDROCAL 1005-3/-2/-1 Online Individual Dissolved Gas Analysis – 4 Gases & Moisture


As Hydrogen (H2) is involved in nearly every fault of the isolation system of power transformers and Carbon Monoxide (CO) is a sign of an involvement of the cellulosic / paper isolation 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.

The device can serve as a compact transformer monitoring system by the integration / connection of other sensors present on a transformer via its analogue inputs:

  • 4 analogue inputs 0/4-20 mADC
  • 6 analogue inputs 0/4-20 mADC +20% / 0-80 VAC +20%

configurable by jumpers It is further equipped with digital outputs for the transmission of alerts or the execution of control functions (e. g. control of the cooling system of a transformer):

  • 5 digital relay outputs
  • 5 digital optocoupler outputs
  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 1005-3/-2/-1 data sheet. If you have any further questions or would like a quotation please contact our sales team.

Additional information

Weight 80 kg
Dimensions 300 × 600 × 800 mm
Power consumption

max. 350 VA



Operation temperature (ambient)

-55°C … +55°C

Oil temperature (inside Transformer)

-20°C … +90°C

Oil pressure

Up to 800 kpa (no negative pressure allowed)


Wall mounted enclosure


Designed to monitor up to three-phase transformer with separate tanks per phase

Sampling sequence

User configurable

Safety - Isolation protection

IEC 61010-1:2002 CE certified

Safety - Degree of protection

IP-55 CE certified

Product Enquiry

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