Delphi - Dissolved Gas Analysis (DGA) Instruments
The Doble Delphi is a compact on-line DGA sensor that mounts directly to a transformer valve or can be mounted adjacent to the transformer when the need arises. The Delphi is a robust instrument housed in a stainless steel enclosure that uses proven fuel cell technology to provide a reliable indication of the gas levels in the oil with easy to understand displays. It is made specifically for the substation environment both in durability and immunity to interference from substation noise.
As an on-line measuring device the Doble Delphi provides results in real time as gas is continuously diffusing across the sensor membrane to interact with the sensor. An optional integrated pump provides fresh oil to the sensor allowing any single valve on the transformer to be used thus dramatically increasing the response time and value of the measurement. The Doble Delphi is the ideal tool to aid in managing transformer assets.
- Patented* vacuum resistant membrane prevents failure during oil surges, maintenance or other activities * patents include US and Canada
- Fast response time: getting to 80% of step change in less than 7 minutes means that indications of a problem are given that much sooner and effectively
- Gas selectivity is high – meaning appropriate measurements rapidly, whether single gas or combined gas
- Micro pump option – allowing for oil circulation to ensure oil doesn’t go stale and give misleading results
- Single valve application – with or without micro-pump – ensures minimal connection to the transformer
- Robust, field ready device comes complete with self-test and diagnostics automatically performed on the sensor itself
- Only requires one transformer valve for operation
- Single value output
- High accuracy and repeatability
- Micro-pump circulation
- Vacuum withstand
- Moisture Detection
- Temperature & Sensor Condition Self Diagnostics
- Continuous Level and trend analysis
- On-line alarms and indicators
- Front-panel configuration and PC based Software
- Communication Options