4 safety warnings and safety signs – BUCHI ELS Detector C-650 User Manual
Page 7

C-650
Operation Manual, Version B
2 Safety
7
2.4
Safety warnings and safety signs
DANGER, WARNING, CAUTION and NOTICE are standardized signal words for identifying 
levels of hazard seriousness of risks related to personal injury and property damage. All signal 
words, which are related to personal injury are accompanied by the general safety sign.
For your safety it is important to read and fully understand the table below with the different sig-
nal words and their definitions!
Sign
Signal word
Definition
Risk level
DANGER
Indicates a hazardous situation which, if 
not avoided, will result in death or serious 
injury.
★★★★
WARNING
Indicates a hazardous situation which, if not 
avoided, could result in death or serious 
injury.
★★★☆
CAUTION
Indicates a hazardous situation which, if 
not avoided, may result in minor or moder-
ate injury.
★★☆☆
no
NOTICE
Indicates possible property damage, but no 
practices related to personal injury.
★☆☆☆
(property damage
only)
Supplementary safety information symbols may be placed in a rectangular panel on the left to 
the signal word and the supplementary text (see example below).
Space for 
supplemen-
tary safety 
information 
symbols.
SIGNAL WORD
Source of hazard.
• List of measures to avoid the herein described, hazard or hazardous situation.
• …
• …
Table of supplementary safety information symbols
The reference list below incorporates all safety information symbols used in this manual and their 
meaning.
Symbol
Meaning
General warning
Electrical hazard
Heavy weight, avoid overexertion
