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E/ONE Generator Condition Monitor – Air-Cooled Apparatus (GCM-A2)

Generator Condition Monitor from E/One


Advancements in air-cooled generator designs have resulted in increasingly higher power ratings. The higher power densities place significantly greater stresses on materials and structures, making slight decreases in cooling efficiencies much more critical. Probability of overheating in these air-cooled machines becomes greater as designs are pushed closer to their critical limits.

The GCM-A2 warns of an impending failure much faster than RTD’s or thermocouples. Why? Because RTD’s and thermocouples need to be physically near the hotspot, or wait until overheating progresses to the point that the temperature near the RTD or thermocouple rises sufficiently for the sensor to detect it. This results in a significantly larger “fault,” possibly a catastrophic one. The GCM-A2, on the other hand, detects the pyrolysis particles emitted into the cooling air as a result of overheating or arcing virtually anywhere in the machine.



E/ONE Generator Gas Analyzer (GGA)

E/One's Generator Gas Analyzer for Hydrogen-Cooled Generators, available in stand-alone and portable configurations, or as part of a larger moniroting and control system


E/One’s Generator Gas Analyzer (GGA) for hydrogen-cooled generators is a triple-range sensor/analyzer that provides continuous monitoring of gas purity during all phases of generator operation.

E/One supplies GGA systems in a range of configurations, from stand-alone sensor/analyzers and retrofit “drop-in” replacement systems, to comprehensive hydrogen control cabinets that monitor gas purity, provide continuous monitoring of case and differential pressures and interact with plant control systems to assure the highest level of generator efficiency.



E/ONE Portable Gas Analyzer



Environment One’s standard Generator Gas Analyzer (GGA) can also be supplied in a portable configuration. The PGA incorporates the same hydrogen gas sensor/analyzer and system electronics found in our other hydrogen gas purity systems. The PGA is specifically intended for use in non-hazardous environments and/or as an emergency back-up in the event a power plant’s primary purity monitoring system is compromised.



E/ONE Generator Gas Dryer (GGD II)

eone generator gas dryer


Water, oil, and other contaminants cause corrosion in critical areas of electric power generators, resulting in diminished efficiency and increasing the likelihood of forced outages. Increased dew point levels also detract from generator efficiency by increasing windage losses. E/One’s Generator Gas Dryer (GGD II) is a dual-chamber system that continuously dries and recirculates generator cooling gas — even when the generator is on turning gear, which is a critical time to maintain low dew point.

Column regeneration is automated and takes place based on programmable inlet and outlet dew point levels. The GGD II has a secondary, programmable time-based regeneration feature, allowing you to set maximum times between regeneration (from 10 to 30 days).



E/ONE Generator Gas Manifold (GGM) System



E/One’s focus on hydrogen-cooled generator gas monitoring and control systems begins at the point where cooling and purge gases enter the generator. The Generator Gas Manifold (GGM) system is one of a range of standard or custom designed products.

From the point where hydrogen gas is received from the plant’s bulk supply or bottle manifold, E/One’s compact GGM monitors critical H2 and CO2 supply pressures, and regulates the hydrogen supply to the appropriate machine gas pressure. Manual isolation valves, arranged for easy end-user access, allow operators to control all facets of the purge process from a single location. A safety spool is also an integral feature of the GGM and assures that dangerous mixtures of H2 and Air are avoided.



E/ONE Hydrogen Control Cabinet: HCC II

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E/One’s Hydrogen Control Cabinet (HCC) was designed specifically for monitoring and controlling hydrogen purity in GE generators that utilize scavenging seal oil systems. The HCC contains two independent analyzers that monitor hydrogen purity from both the turbine-end seal drain enlargement and the collector-end seal drain enlargement.

Designed to be used in a hazardous location, the HCC has the ability to automatically increase the amount of hydrogen gas bled from the generator. It’s also an easy replacement for your old hydrogen control cabinet. Featuring digital displays, warnings and alarms, the HCC works with all GE and non-GE control systems.



ENOTEC – COMTEC® O2 / COe Analyzers

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COMTEC 6000 is the world’s first in-situ analyzer for measurement of oxygen and combustible in flue and process gases for optimal combustion control.

The COMTEC® 6000 is an in-situ analyzer for measurement of oxygen and COe (sum of unburned molecules – CO, H2, CxHy) in flue and process gases. This enables the redundant measurement in real time for combustion fine tuning . This is achieved by combining the MXP sensor for COe analysis with the technology of MLT sensor which measures oxygen content.

Both sensors are located within the process at the tip of the probe installed directly in the flue gas duct. This allows for fast and continuous flue gas data measurement, enabling fast response rates to changes in the flue gas composition.

The analyzer was designed with low maintenance in mind, with minimal calibration requirements and user-friendliness. Furthermore high costs for investment and maintenance, especially when comparing to extractive analyzers, can be avoided.



CEMTEKS – Cemtek Continuos Emission Monitoring Systems

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Cemtek Environmental is one of the largest and most experienced CEMS companies in the market. Your first choice for compliance and non-compliance emissions monitoring systems – Cemtek is the leading supplier to the power, refinery, industrial, turbine, petro chem, steel, chemical, process emissions, manufacturing and small boiler market.

  • One Stop Emissions Monitoring Solutions
  • Compliance CEMS
  • SCR Inlet and Outlet NOX
  • SO2, CO2, CO, O2, NH3, HCl Emissions and Process Monitors
  • All Emissions Monitoring Systems and Gas Analyzers



ENOTEC – CEMTEC® Gas Sampling System

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CEMTEC® has self-cleaning properties and unparalleled mechanical strength for continuous measurement for pyro process optimisation in cement plants.

The CEMTEC® gas sampling probe system was developed for continuous analysis of flue gas in cement plant rotary kiln inlets and other extremely dusty, high temperature processes such as in lime plants with the goal of increasing product quality with reduced fuel usage while simultaneously reducing harmful emissions.

Particularly in view of the increasing usage of alternative fuels in rotary kilns and large combustion chambers, the on-site gas analysis has become ever more important.
In addition, stringent emission targets in cement plants in Germany, Europe, USA and other countries worldwide necessitate continuous process measurement for SNCR control for NOx  reduction.

Process temperatures up to 1400°C, dust concentrations of up to 2000 g/, high mechanical stress and ambient temperatures up to 50°C make extreme demands on any equipment. CEMTEC®unique features provide an optimal solution for uninterrupted measurement under challenging conditions as found in kiln inlet chambers.

The CEMTEC® is self-cleaning which enables continous measurement. 95% availability of measurement during operation is reached. In addition to the in-situ sensors for oxygen and COeanalysis, extractive analyzers are supplied with  dust free flue gas for measurement of e.g. SO2, NOx or CO2.

Due to its mechanical cleaning, continuous extraction and analysis of process gas is possible over a long period of time: Theplunger at the gas inlet removes any deposits or blockages, keeping the gas inlet free. The patented swivel drive continuously rotates the probe in programmable intervals and prevents deformation of the probe tube and enables probe retraction at any time.



ENOTEC – OXITEC® O2 Analyzers


Oxygen analyzers for exact, quick and durable combustion control. Confidence in measurement technology can only be created if the oxygen analysis in the combustion process is precise, the measurement is fast and the analyzer construction is robust. The OXITEC 5000 Oxygen analyzer, manufactured in Germany by ENOTEC, completely meets these requirements.

The heart of the system is the gas sensor from the ENSITU family of sensors which is lies within the probe.The in-house development and manufacturing of the sensors guarantees the highest quality and allows for permanent use in harsh process conditions such as high dust load and aggressive or corrosive flue gas compositions. A strength of the ENSITU sensors is their durability in process-induced vibrations, giving them an average life span of over 7 years.