Key-gas awareness
Use a focused gas set where the main need is continuous change detection and maintenance prioritization.
Solutions / MTE / HYDROCAL
Match online DGA depth to the transformer risk.
From key-gas trend monitoring to extended multi-gas diagnostics, HYDROCAL systems combine dissolved-gas analysis, moisture measurement and transformer monitoring interfaces. TM Networks supports model selection, interfaces, installation and commissioning in Korea.
Selection logic
Start with the decision you need the data to support.
More gases do not automatically mean a better project. Asset criticality, fault modes, alarm philosophy, data ownership, installation conditions and service strategy should determine the monitoring depth.
Fault classification
Add individually measured fault gases when remote interpretation and diagnostic separation matter.
Transformer monitoring
Review analog inputs, relay outputs, moisture, communications and optional monitoring extensions together.
Site-specific design
Confirm valve connection, oil conditions, auxiliary supply, temperature range, offshore exposure and SCADA path.
Portfolio map
HYDROCAL model comparison.
The supplied comparison chart summarizes gas coverage, moisture, monitoring I/O, offshore suitability, extension packages and communication options. Open it full size for detailed review.
1001+ / 1003
Key-gas and moisture monitoring for early-warning and trend applications.
1004 genX / 1005 / 1006 genX
Individual fault-gas measurement with model-dependent I/O and communication options.
1008 / 1009 / 1011 genX
Broader gas coverage for critical assets, more detailed remote analysis and transformer-monitoring integration.
MS-7 / BPD
Optional transformer monitoring, bushing and partial-discharge functions where supported by the selected platform.
Selection note: The portfolio includes multiple generations and document revisions. Availability, current model status and exact protocol options must be confirmed for each quotation.
Project inputs
Define these items before requesting a quotation.
A complete application brief shortens technical clarification and prevents incorrect model or accessory selection.
01Transformer rating, voltage, manufacturer, year and serial number
02New-build or retrofit installation and target in-service date
03Required gases, moisture range and monitoring objective
04Valve thread: G 1½" or 1½" NPT, available clearance and oil conditions
05Auxiliary supply, analog I/O, relays and external sensor requirements
06Modbus, DNP3, IEC 61850, Ethernet media and cybersecurity requirements
Product datasheets
HYDROCAL technical document library.
Use the revision label shown below when discussing a file. Older files remain useful for installed-base and preliminary configuration review, but do not establish current commercial availability.
HYDROCAL 1001+
Focused gas-in-oil and moisture monitoring.
Datasheet PDFOrder SheetHYDROCAL 1003
Individual H₂ and CO plus moisture and transformer inputs.
Datasheet PDFOffshore PDFOrder SheetHYDROCAL 1004 genX
H₂, CO and C₂H₂ individual measurement.
R08 · 2018 PDFHYDROCAL 1005
H₂, CO, C₂H₂ and C₂H₄ individual measurement.
Datasheet PDFOrder SheetHYDROCAL 1006 genX
Five individually measured key fault gases plus moisture.
R06 · 2020 PDFHYDROCAL 1008
Extended multi-gas DGA and transformer monitoring.
Datasheet PDFOrder SheetHYDROCAL 1009
Extended multi-gas, oxygen and transformer-monitoring functions.
HYDROCAL 1009 DatasheetOffshore · 2017 PDFOrder SheetInstallation & Operation ManualPassword required — contact TM Networks for access.HYDROCAL 1009-3
For 3 × 1-phase transformers
R03 · 2019 PDFHYDROCAL 1011 genX
Extended individually measured DGA portfolio.
R07 · 2022 PDFBushing & PD Monitor
Bushing insulation and partial-discharge monitoring extension.
BPD · 2022 PDFTransformer Monitoring Extension Package
Transformer monitoring expansion with additional sensor inputs and interfaces.
MS-7 · 2013 PDFService reference
Legacy Hydrocal Service Tool quick guide for installed-base support.
Legacy guide PDFAbout the order sheets: these legacy forms help identify power supply, valve thread, communication, I/O, installation and end-user data. Send a completed sheet to TM Networks only as a starting point; current configuration will be revalidated before ordering.
Korea support
Not sure which HYDROCAL fits?
Send the asset data and monitoring objective. TM Networks will narrow the portfolio and identify the missing technical inputs.