Hydrogen Safety Precautions - Thermo Scientific TRACE 1310 Hardware Manual

Preface

Hydrogen Safety Precautions

Hydrogen Safety Precautions
xxii TRACE 1300 and TRACE 1310 Hardware Manual
Table 1. Instrument Marking and Symbols (Sheet 2 of 2)
Symbol Description
Equipotentiality
*
On (Supply)
*
Off (Supply)
Equipment protected throughout by DOUBLE INSULATION or
REINFORCED INSULATION (Equivalent to Class II of IEC 536)
*
Instruction manual symbol affixed to product. Indicates that the user must
refer to the manual for specific WARNING or CAUTION information to
avoid personal injury or damage to the product.
Caution, risk of electric shock
*
Caution, hot surface
*
Caution, biohazard
In-position of a bistable push control
Out-position of a bistable push control
*
Jack socket
+ -
*
Symbol in compliance to the Directive
and Electronic Equipment (WEEE) placed on the European market after
August, 13, 2005.
Hydrogen is a colorless, odorless, highly flammable gas with the molecular formula H
atomic weight of 1.00794, making it the lightest element. Hydrogen gas presents a hazard, as
it is combustible over a wide range of concentrations; at ambient temperature and pressure,
the range is from about 4 to 74.2% by volume.
Hydrogen has a flash point of -423 °F (-253 °C) and an auto-ignition temperature of
1040 °F (560 °C). It has a very low ignition energy and the highest burning velocity of any
gas. If hydrogen is allowed to expand rapidly from high pressure, it can self-ignite. Hydrogen
burns with a flame that can be invisible in bright light.
on Waste Electrical
2012/19/EU
Thermo Scientific
and an
2