Gas Station®
The E/One Gas Station® is a modular approach that combines monitoring and control systems onto a single skid, customized to meet specific power plant requirements and budgets.
Gas Station modules include:
- Main gas supply manifold and associated controls
- Gas purity monitoring
- Overheat monitoring
- Dew point monitoring
- Gas drying
- Partial discharge monitoring
- Seal oil system monitoring and control
- Customized annunciator panels
Power utilities and independent power producers are increasingly concerned with upfront capital expenditures and subsequent on-site engineering and installation costs. They also require accurate, real-time monitoring information so that generator efficiency and generator performance can be maximized — and downtime minimized. The E/One Gas Station addresses each of these concerns and allows power plant operators, together with E/One, to configure targeted solutions for original equipment supply and retrofit applications.
Download the Gas Station brochure
Contact E/One for detailed specifications of Gas Station configurations.
Gas Station Features and Benefits

- Flexible, cost-efficient approach to gas monitoring and control systems for electric power generators
- Modularity couples technology and reduced installation and on-site engineering costs
- Customized to meet specific needs and budgets
- Hazardous area designs — compliance with national and international requirements
GGA/AUX 2-Mod Gas Station
E/One's GGA/AUX Gas Station combines continuous gas purity monitoring with site-specific annunciation and auxiliary monitoring. E/One has optimized the auxiliary features to offer an economical, fast lead-time solution to the unique requirements of any power plant. This GAS Station incorporates international requirements for hazardous area locations and is available in an open-frame or NEMA 3R configuration.
GGA
- Microprocessor-controlled with self-diagnostics
- Differential pressure and case pressure indicating transmitters, ranged for site-specific needs (also available in dual gauge/dual transmitter version)
- Triple range (normal operation and purge)
- Best in class accuracies with minimal drift
AUX
- Fully customizable annunciator display
- Optional dewpoint transmitter and display
Download the GGA/AUX 2-Mod Gas Station Brochure
GGA/GCM-X 2-Mod Gas Station
GGA
- Features — Same as above
GCM-X
- Microprocessor-controlled with self-diagnostics
- Automatic alarm verification
- Automatic sampling system
- Differential pressure indicating transmitter for stable flow control
- Dual bar displays for flow and output
- Status and alarm indicators
Download the GGA/GCM-X 2-Mod Gas Station Brochure
Gas Station Modules
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Generator Auxiliary System (GAS) Used in conjunction with E/One's main gas supply manifold, provides local display of critical gas supply pressures, case, and differential pressure. May be supplied with digital displays in place of gages. |
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Generator Gas Analyzer (GGA) Provides continuous monitoring of hydrogen and purge gases for efficiency and safety. |
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Generator Condition Monitor (GCM-X) Provides early warning of generator hotspots, which can lead to catastrophic failure. |
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Generator Gas Dryer (GGD) Removes moisture and contaminants from generator cooling gas, reducing threats of corrosion and windage losses. |
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Auxiliary Systems (AUX) Customized to meet specific requirements and often include seal oil system monitoring and site-specific annunciator displays. |
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GGA and GCM-X Dual-Module Gas Station The popular two-module GGA/GCM-X Gas Station combines continuous gas purity monitoring of the Generator Gas Analyzer with early warning of overheat monitoring of the Generator Condition Monitor. The two-module Gas Station is an ideal retrofit configuration in support of generator life extension. |
Gas Station Specifications
| GGA | GCM-X | |
| Characteristics | ||
| Operating Principle | Thermoconductivity | Ionization chamber |
| Gas Flow Rate | 100-700 cc/min (500 cc nominal) | Adjustable |
| Measurement | H2 in Air | |
| H2 in CO2 | ||
| Air in CO2 | ||
| Display | Alphanumeric | Bar graph |
| LEDs | LEDs | |
| LCD | LCD | |
| Electrical Characteristics | ||
| Power | 115/230 VAC, 50/60 Hz | 115/230 VAC, 50/60 Hz |
| Output Relays | Warning, Alarm, Trouble | Warning, Verified Alarm, Trouble |
| Output Signals | Purity | Ionization chamber |
| (All output signals 4-20 mA) | Flow | |
| Mechanical Characteristics | ||
| Module Dimensions | 23" h x 25" w x 12.25" d | 23" h x 25" w x 10.25" d |
| Temperature | 32-125 F (0-52 C) | 32-125 F (0-52 C) |
| Relative Humidity | 0 to 95% | 0 to 95% |
| Gas Connections | As required | As required |
| Gas Pressure | 100 psi maximum | 150 psi maximum |
| Area Classification | Class 1, Division 1, Group B | Class 1, Division 1, Group B |
| ATEX, Zone 1, Ex, H2 | ATEX, Zone 1, Ex, H2 | |
| GAS | GGD | |
| Characteristics | ||
| Operating Principle | N/A | Adsorption |
| Gas Flow Rate | (Molecular Sieve) | |
| Generator dependent | ||
| Measurement | Dew Point | |
| Display | Alphanumeric (optional) | Alphanumeric |
| Analog gauge(s) | Analog gauge(s) | |
| LEDs (optional) | LEDs (optional) | |
| LCD (optional) | LCD (optional) | |
| Electrical Characteristics | ||
| Power | 115/230 VAC, 50/60 Hz | 460/60/3 Phase |
| Output Relays | Supply Pressure, Case Pressure | High Temperature, High Dew Point (optional) |
| Trouble (optional) | Trouble | |
| Output Signals | ||
| (All output signals 4-20 mA) Case Pressure | Supply Pressure (optional) | Dew Point |
| Mechanical Characteristics | ||
| Module Dimensions | 23" h x 25" w x 7.5" d | 23" h x 25" w x 7.5" d |
| Temperature | 32 to 125 F (0-52 C) | 32 to 125 F (0-52 C) |
| Relative Humidity | 0 to 95% | 0 to 95% |
| Gas Connections | As required | 3/4", 150# RF Flange |
| Gas Pressure | 150 psi maximum | 10/75 psi min/max |
| Area Classification | Class 1, Division 1, Group B | ATEX, Zone 2, Ex, H2 |
| ATEX, Zone 1, Ex, H2 | ||
| 2-Module Gas Station 78" h x 30" w x 36" d | ||
| 4-Module Gas Station 78" h x 59" w x 54" d | ||
| 6-Module Gas Station 84" h x 84" w x 60" d | ||
| Notes: GAS Modules may be configured to meet customer requirements. | ||





