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Hydrogen Control Cabinet: HCC II

When Hydrogen purity drops, windage losses and operating costs increase, resulting in lost revenue and profitability. Gas purity is also a critical life safety issue, making monitoring for potentially explosive levels essential.

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.

Features and Benefits

  • Two triple-range Generator Gas Analyzers
  • Microprocessor-controlled for superior accuracy and stability
  • Automatic increased scavenging (hydrogen flow rate)
  • Push-button calibration
  • Case pressure gage and transmitter
  • Fan differential pressure gage and transmitter
  • Up to 12-point customizable annunciator
  • Design for hazardous location operation

Download the Hydrogen Control Cabinet (HCC II) brochure

Measurement Characteristics  
Technology Principle Thermal Conductivity
Gas Analyzer Sensing Unit

Switchable — Triple Range

70 to 100% H2 in Air

0 to 100% H2 in CO2

0 to 100% Air in CO2

Resolution +/- 0.1%
Accuracy +/- 0.5% F.S. on H2 in Air
  +/- 1.0% F.S. on H2 or Air in CO2
Linearity +/- 1.0% F.S.
Drift <0.2% / month
Electrical Characteristics  
Input Voltage (see nameplate)

120 VAC 50/60 Hz

220 VAC 50/60 Hz (optional)

Outputs 4-20 mA current output
Alarm Levels Alarm and Warning levels are adjustable
Relay Contact Rating 0.5A @ 250VAC/125VDC (resistive)
Data Retention Lithium battery supportyed RAM, 10 years minimum
Indicators AC Power, Trouble, Normal (H2 in Air), Purge (H2 in CO2), Purge (Air in CO2), Calibrate H2, Calibrate CO2, Calibrate N2, one 3-character LED numeric display, one 16-character LCD display
Area Classification Class I, Zone 2, Group IIB + H2
Mechanical Characteristics  
Overall Dimensions 35.5" w x 76.4" h x 17.5" d
Weight 1000 lbs
Ambient Temperature 32 F to 149 F (0 C to 65 C)
Maximum Pressure 100 psi

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