Using Hydrogen - Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual

Using Hydrogen

Using Hydrogen
The use of hydrogen as a carrier gas or as fuel for certain flame detectors requires
the operator's strict attention and compliance with special precautions due to the
hazards involved.
Hydrogen is a dangerous gas, particularly in an enclosed area when it reaches a
concentration corresponding to its lower explosion level (4% in volume). When
mixed with air it can create an explosive mixture. An explosion hazard could
develop in the GC oven when hydrogen is used as a carrier gas if oven elements
are not perfectly connected to each other, or if the connection materials are worn
out, broken, or otherwise faulty.
Maintenance and Troubleshooting Manual
Symbol
Equipment protected throughout by DOUBLE
INSULATION or REINFORCED INSULATION
(Equivalent to Class II of IEC 536)
Caution, risk of electric shock
Caution, hot surface
Caution (refer to accompanying documents)
In-position of a bistable push control
Out-position of a bistable push control
Symbol in compliance to the Directive 2002/96/EC on
Waste Electrical and Electronic Equipments (WEEE)
placed on the european market after August, 13, 2005.
About This Manual
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